Method and device for acquiring noise area of flight runway

Abstract

The invention provides a method and a device for acquiring a noise area of a flight runway. For a scene in which the aircraft takes off on the flight runway, a first take-off noise area corresponding to the nearest ground clearance position of the aircraft and a second take-off noise area corresponding to the farthest ground position of the aircraft are acquired. According to the first takeoff noise area and the second takeoff noise area, obtaining a third takeoff noise area corresponding to the first middle position of the aircraft, and fusing the first takeoff noise area, the second takeoff noise area and the third takeoff noise area to obtain a total takeoff noise area of the aircraft; for a scene in which the aircraft lands on the flight runway, acquiring a total landing noise area of the aircraft; and obtaining a total noise area of the flight runway according to the total takeoff noise area and / or the total landing noise area. Therefore, the noise area of the flight runway can be accurately obtained, and the range of airport noise related to the airport can be accurately determined, so as to assist in evaluation of airport noise environmental influence and assist in airport site selection.

Description

Technical Field

[0001] The present application relates to the field of computer technology, and in particular to a method and device for acquiring a noise area of ​​a flight runway. Background Art

[0002] With the rapid development of the economy, civil aviation aircraft, as a convenient and efficient means of travel, have become the preferred choice for many passengers. In order to further improve the convenience of civil aviation aircraft, many cities have begun to build new airports or renovate and expand airports.

[0003] However, the takeoff and landing of aircraft at the airport will generate airport noise, which will cause a certain degree of noise pollution. As the number of flights increases, the impact of airport noise on residents around the airport is getting greater and greater, affecting the normal life of surrounding residents.

[0004] Gradually, the side effects of airport noise have become an important factor restricting the sustainable and green development of the aviation industry. At the same time, airport noise has become a serious social problem both at home and abroad. Summary of the invention

[0005] The present application shows a method and device for acquiring the noise area of ​​a flight runway.

[0006] In a first aspect, the present application provides a method for acquiring a noise area of ​​a flight runway, the method comprising:

[0007] For a scenario where an aircraft takes off on a runway, a first takeoff noise area corresponding to the position of the aircraft closest to the ground is obtained, and a second takeoff noise area corresponding to the position of the aircraft farthest from the ground is obtained. The noise in the first takeoff noise area is greater than or equal to a preset maximum tolerable decibel, and the noise in the second takeoff noise area is greater than or equal to a preset maximum tolerable decibel;

[0008] According to the first takeoff noise area and the second takeoff noise area, a third takeoff noise area corresponding to a first middle position of the aircraft is acquired, the first middle position includes a position between a position closest to the ground and a position farthest from the ground, and noise in the third takeoff noise area is greater than or equal to a preset maximum tolerance decibel;

[0009] The first takeoff noise area, the second takeoff noise area and the third takeoff noise area are merged to obtain the total takeoff noise area of ​​the aircraft;

[0010] For a scenario where an aircraft lands on a runway, a first landing noise area corresponding to the nearest landing position of the aircraft is obtained, and a second landing noise area corresponding to the farthest landing position of the aircraft is obtained, the noise in the first landing noise area is greater than or equal to a preset maximum tolerance decibel, and the noise in the second landing noise area is greater than or equal to the preset maximum tolerance decibel;

[0011] According to the first landing noise area and the second landing noise area, a third landing noise area corresponding to a second middle position of the aircraft is acquired, wherein the second middle position includes a position between a nearest landing position and a farthest landing position, and noise in the third landing noise area is greater than or equal to a preset maximum tolerance decibel;

[0012] The first landing noise area, the second landing noise area and the third landing noise area are merged to obtain a total landing noise area of ​​the aircraft;

[0013] The total noise area of ​​the runway is obtained according to the total takeoff noise area of ​​the aircraft and / or the total landing noise area of ​​the aircraft.

[0014] In a second aspect, the present application shows a device for acquiring a noise area of ​​a flight runway, the device comprising:

[0015] A first acquisition module is used to acquire, for a scenario in which an aircraft takes off on a runway, a first takeoff noise area corresponding to a position of the aircraft closest to the ground, and a second takeoff noise area corresponding to a position of the aircraft farthest from the ground, wherein the noise in the first takeoff noise area is greater than or equal to a preset maximum tolerable decibel, and the noise in the second takeoff noise area is greater than or equal to the preset maximum tolerable decibel;

[0016] A second acquisition module is used to acquire, according to the first takeoff noise area and the second takeoff noise area, a third takeoff noise area corresponding to a first middle position of the aircraft, the first middle position including a position between a position closest to the ground and a position farthest from the ground, and the noise in the third takeoff noise area is greater than or equal to a preset maximum tolerance decibel;

[0017] A first fusion module is used to fuse the first takeoff noise area, the second takeoff noise area and the third takeoff noise area to obtain a total takeoff noise area of ​​the aircraft;

[0018] A third acquisition module is used to acquire, for a scenario in which an aircraft lands on a runway, a first landing noise area corresponding to the nearest landing position of the aircraft, and a second landing noise area corresponding to the farthest landing position of the aircraft, wherein the noise in the first landing noise area is greater than or equal to a preset maximum tolerance decibel, and the noise in the second landing noise area is greater than or equal to the preset maximum tolerance decibel;

[0019] A fourth acquisition module is used to acquire, according to the first landing noise area and the second landing noise area, a third landing noise area corresponding to a second middle position of the aircraft, the second middle position including a position between a nearest landing position and a farthest landing position, and the noise in the third landing noise area is greater than or equal to a preset maximum tolerance decibel;

[0020] A second fusion module is used to fuse the first landing noise area, the second landing noise area and the third landing noise area to obtain a total landing noise area of ​​the aircraft;

[0021] The fifth acquisition module is used to acquire the total noise area of ​​the runway according to the total takeoff noise area of ​​the aircraft and / or the total landing noise area of ​​the aircraft.

[0022] In a third aspect, the present application shows an electronic device, which includes: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute the method described in any of the above aspects.

[0023] In a fourth aspect, the present application illustrates a non-temporary computer-readable storage medium, which, when instructions in the storage medium are executed by a processor of an electronic device, enables the electronic device to execute a method as described in any of the above aspects.

[0024] In a fifth aspect, the present application illustrates a computer program product. When instructions in the computer program product are executed by a processor of an electronic device, the electronic device is enabled to execute the method described in any of the above aspects.

[0025] The technical solution provided by this application may have the following beneficial effects:

[0026] In the present application, for the scenario of an aircraft taking off on a runway, a first takeoff noise area corresponding to the nearest takeoff position of the aircraft is obtained, and a second takeoff noise area corresponding to the farthest position of the aircraft is obtained. The noise in the first takeoff noise area is greater than or equal to the preset maximum tolerance decibel. The noise in the second takeoff noise area is greater than or equal to the preset maximum tolerance decibel; based on the first takeoff noise area and the second takeoff noise area, a third takeoff noise area corresponding to the first middle position of the aircraft is obtained, the first middle position includes a position between the nearest takeoff position and the farthest position, and the noise in the third takeoff noise area is greater than or equal to the preset maximum tolerance decibel; the first takeoff noise area, the second takeoff noise area and the third takeoff noise area are merged to obtain the total takeoff noise area of ​​the aircraft; for the scenario of an aircraft landing on a runway, a first landing noise area corresponding to the nearest landing position of the aircraft is obtained, and a second landing noise area corresponding to the farthest landing position of the aircraft is obtained. The noise in the first landing noise area is greater than or equal to the preset maximum tolerable decibel, and the noise in the second landing noise area is greater than or equal to the preset maximum tolerable decibel; based on the first landing noise area and the second landing noise area, the third landing noise area corresponding to the second middle position of the aircraft is obtained, the second middle position includes the position between the nearest landing position and the farthest landing position, and the noise in the third landing noise area is greater than or equal to the preset maximum tolerable decibel; the first landing noise area, the second landing noise area and the third landing noise area are merged to obtain the total landing noise area of ​​the aircraft; the total noise area of ​​the runway is obtained according to the total takeoff noise area of ​​the aircraft and / or the total landing noise area of ​​the aircraft.

[0027] Through this application, the noise area of ​​the flight runway can be accurately obtained, and the scope of the airport noise involved in the airport can be accurately determined to assist in the evaluation of the airport noise environmental impact and to assist in the airport site selection. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a flowchart of the steps of a method for acquiring a noise area of ​​a flight runway of the present application.

[0029] Figure 2 It is a schematic diagram of the total takeoff noise area in a scenario of aircraft takeoff in the present application.

[0030] Figure 3 It is a schematic diagram of the total landing noise area in a scenario of aircraft landing in the present application.

[0031] Figure 4 It is a flow chart of drawing noise contour lines of a flight runway in the present application.

[0032] Figure 5This is a structural block diagram of a device for acquiring a noise area of ​​a flight runway according to the present application.

[0033] Figure 6 It is a block diagram of an electronic device of the present application.

[0034] Figure 7 It is a block diagram of an electronic device of the present application. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] The current way to deal with airport noise is to install sound insulation facilities to reduce the noise generated by aircraft takeoff and landing, but this still cannot solve the actual problem.

[0037] On the other hand, the inventors have discovered that the problem of airport noise affecting surrounding residents can be avoided when selecting a site for an airport. For example, when selecting a site for an airport, the scope of the airport noise involved can be determined, and the impact on surrounding residents can be estimated. When the impact on surrounding residents is small or non-existent, it means that the site selection is appropriate and meets the noise requirements. Otherwise, it is determined that the site selection is inappropriate and does not meet the noise requirements, and a new site selection is performed until the site meets the noise requirements.

[0038] Among them, in order to determine the scope of airport noise involved in an airport, the inventors found that since aircraft take-offs and landings are all performed on the airport's runway, determining the scope of airport noise involved in an airport can essentially be determining the noise area of ​​the airport's runway.

[0039] Reference Figure 1 , a flowchart of a method for acquiring a noise area of ​​a flight runway of the present application is shown, the method can be applied to an electronic device, wherein the method may include the following steps:

[0040] In step S101, for a scenario where an aircraft takes off on a runway, a first takeoff noise area corresponding to the aircraft's closest position off the ground is obtained, and a second takeoff noise area corresponding to the aircraft's farthest position off the ground is obtained. The noise in the first takeoff noise area is greater than or equal to a preset maximum tolerable decibel. The noise in the second takeoff noise area is greater than or equal to a preset maximum tolerable decibel.

[0041] The noise outside the first takeoff noise area is less than the preset maximum tolerance decibel.

[0042] The noise outside the second takeoff noise area is less than the preset maximum tolerance decibel.

[0043] The maximum tolerable decibel may include 70dB or 75dB, etc., which may be determined according to actual conditions and is not limited in this application.

[0044] In a scenario where an aircraft takes off on a runway, the aircraft first stops on the center line of the runway (stationary in the center of the runway), the aircraft's engine is turned on, and then the aircraft accelerates and moves. After the speed reaches the take-off speed, the aircraft takes off. The position where the aircraft just takes off can be regarded as the take-off position.

[0045] The runway is straight and has a certain length. For any type of aircraft that needs to take off on the runway, even if the aircraft of this type starts to accelerate from the starting point of the runway, it still needs to accelerate on the ground for at least a glide distance before it can take off. That is, "at least a glide distance" of the aircraft of this type is a fixed value, which is determined when the aircraft of this type leaves the factory. The position on the runway that is "at least a glide distance" away from the starting point of the runway is the closest take-off position of the aircraft of this type.

[0046] In addition, the length of the runway is limited. In the scenario where the aircraft of this model takes off on the runway, if the aircraft of this model takes off when it is close to the end of the runway, a flight accident may occur. Therefore, the aircraft of this model needs to take off at least a certain distance away from the end of the runway. That is, "at least a certain distance" of the aircraft of this model is a fixed value, which is determined when the aircraft of this model leaves the factory. In this way, the position on the runway that is "at least a certain distance" away from the end of the runway is the farthest position from the ground for the aircraft of this model.

[0047] For every other type of aircraft that needs to take off from a runway.

[0048] The model of the aircraft that needs to take off on the runway can be determined according to actual conditions, for example, according to the specifications of the runway, or according to the business of the airport to which the runway belongs, and this application does not limit this.

[0049] In one embodiment of the present application, the first takeoff noise area corresponding to the most recent takeoff position of the aircraft may be obtained by referring to the following process, including:

[0050] 1011. Determine a take-off altitude corresponding to the aircraft, wherein, when the altitude of the aircraft during take-off is less than or equal to the take-off altitude corresponding to the aircraft, there is noise generated by the aircraft on the ground that is greater than a preset maximum tolerable decibel.

[0051] When the altitude of the aircraft during takeoff is greater than the takeoff altitude, there is no noise on the ground generated by the aircraft that is greater than the preset maximum tolerable decibel.

[0052] For any type of aircraft that needs to take off on a popular runway, the take-off altitude corresponding to the aircraft of this type can be determined in advance. When the altitude of the aircraft of this type during take-off is less than or equal to the take-off altitude, there is noise on the ground generated by the aircraft of this type that is greater than the preset maximum tolerable decibel. When the altitude of the aircraft of this type during take-off is greater than the take-off altitude, there is no noise on the ground generated by the aircraft of this type that is greater than the preset maximum tolerable decibel. That is, the take-off altitude corresponding to the aircraft of this type is obtained through multiple experimental tests after knowing the preset maximum tolerable decibel, and the specific test method will not be described in detail.

[0053] And, the model of the aircraft of the model is obtained, and the maximum tolerable decibel involved in the runway is obtained. The maximum tolerable decibel involved in the runway is set manually, for example, according to the provisions of laws and regulations, or according to the results of consultation with residents around the runway, etc.

[0054] Then, the model of the aircraft, the maximum tolerable decibel involved in the flight runway, and the take-off altitude corresponding to the aircraft may be formed into corresponding table items and stored in the corresponding relationship between the aircraft model, the maximum tolerable decibel, and the take-off altitude.

[0055] The same is true for every other type of aircraft that needs to take off from a popular runway.

[0056] Thus, in this step, the model of one of the aircraft types that needs to take off on the popular runway can be determined, and then, in the correspondence between the aircraft model, the maximum tolerable decibel and the take-off altitude, the take-off altitude corresponding to the model of the aircraft and the preset maximum tolerable decibel is searched to obtain the take-off altitude corresponding to the aircraft model.

[0057] For example, the take-off altitude corresponding to the aircraft of this model is 800 meters. When the altitude of the aircraft of this model is less than or equal to 800 meters during take-off, there is noise greater than 70 decibels generated by the aircraft of this model on the ground. When the altitude of the aircraft of this model is greater than 800 meters during take-off, there is no noise greater than 70 decibels generated by the aircraft of this model on the ground.

[0058] 1012. Determine the take-off direction distance corresponding to the aircraft according to the take-off height corresponding to the aircraft. The take-off direction distance corresponding to the aircraft is: the distance between the position of the aircraft on the ground when the aircraft starts to perform the take-off operation and the projection position of the aircraft on the ground when the aircraft reaches the take-off height corresponding to the aircraft.

[0059] The position of the aircraft on the ground when it starts to take off can be understood as: when the aircraft is on the runway and the direction of the aircraft is in the same direction as the length of the runway, the static position of the aircraft when it just starts to take off, for example, the position when the aircraft has not moved and the engine has been started.

[0060] The take-off direction is horizontal.

[0061] Different models of aircraft have different take-off altitudes and different take-off distances.

[0062] Therefore, for any aircraft type that needs to take off on a popular runway, the take-off distance of the aircraft type can be calculated in advance, and then the model of the aircraft type, the corresponding take-off height of the aircraft type, and the take-off distance of the aircraft type are formed into a corresponding table and stored in the corresponding relationship between the aircraft type, take-off height, and take-off distance. The same is true for every other aircraft type that needs to take off on a popular runway.

[0063] In this way, when determining the take-off direction distance based on the take-off altitude, the model of one of the aircraft types that needs to take off on the popular runway can be determined, and then, in the correspondence between the aircraft model, take-off altitude and take-off direction distance, the take-off direction distance corresponding to the model of the aircraft model and the take-off altitude corresponding to the aircraft model can be found.

[0064] For example, the distance in the take-off direction of this model of aircraft is 7 kilometers, and the distance between "the position of this model of aircraft on the ground when it starts to take off" and "the projection position of this model of aircraft on the ground when the aircraft reaches the take-off height of 800 meters corresponding to this model of aircraft" is 7 kilometers.

[0065] 1013. Determine the vertical distance corresponding to the aircraft. When the aircraft is performing a takeoff operation but has not left the ground, within the vertical distance corresponding to the aircraft in the vertical direction, the noise generated by the aircraft is greater than or equal to the preset maximum tolerance decibel, and the vertical direction is the horizontal direction, and the vertical direction is perpendicular to the takeoff direction.

[0066] Outside the vertical distance corresponding to the aircraft in the vertical direction, the noise generated by the aircraft is less than the preset maximum tolerance decibel.

[0067] For any type of aircraft that needs to take off on a popular runway, the vertical distance corresponding to the aircraft of this type can be determined in advance. When the aircraft of this type performs takeoff but has not left the ground, within the vertical distance corresponding to the aircraft of this type in the vertical direction, the noise generated by the aircraft of this type is greater than or equal to the preset maximum tolerance decibel, and outside the vertical distance corresponding to the aircraft of this type in the vertical direction, the noise generated by the aircraft of this type is less than the preset maximum tolerance decibel. The vertical distance corresponding to the aircraft of this type can be obtained through multiple experimental tests, and the specific test method will not be described in detail.

[0068] And, the model of the aircraft of the model is obtained, and the maximum tolerable decibel involved in the runway is obtained. The maximum tolerable decibel involved in the runway is set manually, for example, according to the provisions of laws and regulations, or according to the results of consultation with residents around the runway, etc.

[0069] Then, the model of the aircraft, the maximum tolerable decibel involved in the flight runway, and the vertical distance corresponding to the aircraft of the model may be formed into a corresponding table item and stored in the corresponding relationship between the aircraft model, the maximum tolerable decibel, and the vertical distance.

[0070] The same is true for every other type of aircraft that needs to take off from a popular runway.

[0071] Thus, in this step, the model of one of the aircraft types that needs to take off on the wind runway can be determined, and then, in the correspondence between the aircraft model, the maximum tolerable decibel and the vertical distance, the vertical distance corresponding to the model of the aircraft and the preset maximum tolerable decibel is searched to obtain the vertical distance corresponding to the model of the aircraft.

[0072] For example, the vertical distance corresponding to this model of aircraft may be 0.8 kilometers.

[0073] 1014. Determine a first takeoff noise area corresponding to a closest takeoff position of the aircraft according to a takeoff direction distance corresponding to the aircraft and a vertical direction distance corresponding to the aircraft.

[0074] In one example, in a scenario where an aircraft is performing a takeoff operation, the aircraft is stationary at a position on a runway, then starts the engine, then accelerates on the ground, then climbs off the ground at the nearest liftoff position, then climbs to a takeoff altitude, and then continues to climb until it reaches a cruising altitude.

[0075] Among them, from the one stationary position to the nearest lift-off position, the shape of the noise area on the ground that is greater than or equal to the preset maximum tolerable decibel is a gradually increasing isosceles triangle, and from the nearest lift-off position to the projection position of the take-off height on the ground, the shape of the noise area on the ground that is greater than or equal to the preset maximum tolerable decibel is a partial ellipse.

[0076] The length of the major semi-axis of the ellipse is the take-off distance of the aircraft, and the length of the minor semi-axis of the ellipse is the vertical distance of the aircraft. For details, please refer to Figure 2 shown.

[0077] Take the noise impact area of ​​an aircraft takeoff as an example: In order to detect =70dB impact range for evaluation. Assume that the aircraft climbs to 2500m at a constant climb rate and is 22km from the airport. Use the flight noise calculation program to obtain d max = The sound pressure level at 800m is about 70dB. According to the assumed climb rate, at the distance X from the starting point of the takeoff operation max =7km, the aircraft reaches an altitude of 800m. After the aircraft leaves the ground, the area where the ground noise is greater than 70dB is the elliptical area E1 with the major and minor semi-axes of 7km (the distance from the take-off point along the runway) and 0.8km (the distance from the take-off point in the direction perpendicular to the runway).

[0078] In addition, for the specific process of "obtaining the second takeoff noise area corresponding to the position of the aircraft farthest from the ground", please refer to the process of steps 1011 to 1014 of the aforementioned "obtaining the first takeoff noise area corresponding to the position of the aircraft closest to the ground", which will not be described in detail here.

[0079] In step S102, a third takeoff noise area corresponding to a first middle position of the aircraft is obtained according to the first takeoff noise area and the second takeoff noise area, the first middle position includes a position between a position closest to the ground and a position farthest from the ground, and the noise in the third takeoff noise area is greater than or equal to a preset maximum tolerance decibel.

[0080] The noise outside the third takeoff noise area is less than the preset maximum tolerance decibel.

[0081] In this step, the first position and the second position farthest from the runway can be determined in the first takeoff noise area. For example, the first position and the second position farthest from the center line of the runway are determined. The first position and the second position are located on both sides of the runway, for example, the first position is located on one side of the runway, and the second position is located on the other side of the runway.

[0082] Furthermore, a third position and a fourth position farthest from the runway may be determined in the second takeoff noise area. For example, the third position and the fourth position farthest from the center line of the runway are determined. The third position and the fourth position are located on both sides of the runway, for example, the third position is located on one side of the runway, and the fourth position is located on the other side of the runway.

[0083] An area enclosed by the first position, the second position, the third position, and the fourth position is determined as a third takeoff noise area.

[0084] Assuming that the first position and the third position are located on one side of the runway, and the second position and the fourth position are located on the other side of the runway, the rectangular area enclosed by the first position, the second position, the third position and the fourth position can be used as the third takeoff noise area. For example, the first position is connected with the second position, the second position is connected with the fourth position, the fourth position is connected with the third position, and the third position is connected with the first position to form a rectangular area, which is used as the third takeoff noise area.

[0085] In step S103, the first takeoff noise area, the second takeoff noise area and the third takeoff noise area are merged to obtain the total takeoff noise area of ​​the aircraft.

[0086] For example, the union of the first takeoff noise area, the second takeoff noise area, and the third takeoff noise area may be obtained to obtain the total takeoff noise area of ​​the aircraft.

[0087] In another embodiment of the present application, the runway is a long straight line having two endpoints, such as a first endpoint and a second endpoint. When the aircraft takes off on the runway, it can take off in the direction from the first endpoint to the second endpoint, or it can take off in the direction from the second endpoint to the first endpoint.

[0088] Through the process of step S101 to step S102, the first takeoff noise area, the second takeoff noise area and the third takeoff noise area in the scene where the aircraft takes off from the first end point to the second end point on the runway can be obtained, and then in step S103, the first takeoff noise area, the second takeoff noise area and the third takeoff noise area in the scene where the aircraft takes off from the first end point to the second end point on the runway can be merged to obtain the takeoff noise area where the first end point points to the second end point.

[0089] Furthermore, a first takeoff noise area, a second takeoff noise area, and a third takeoff noise area in a scenario where the aircraft takes off from the second endpoint to the direction of the first endpoint on the runway can be obtained, and then in step S103, the first takeoff noise area, the second takeoff noise area, and the third takeoff noise area in the scenario where the aircraft takes off from the second endpoint to the direction of the first endpoint on the runway can be merged to obtain a takeoff noise area where the second endpoint points to the first endpoint.

[0090] Then, the takeoff noise area where the first endpoint points to the second endpoint and the takeoff noise area where the second endpoint points to the first endpoint can be merged to obtain the takeoff noise fusion area of ​​the aircraft.

[0091] Then, the total takeoff noise area of ​​the aircraft can be obtained according to the takeoff noise fusion area of ​​the aircraft. For example, the takeoff noise fusion area of ​​the aircraft is determined as the total takeoff noise area of ​​the aircraft.

[0092] In another embodiment of the present application, for any aircraft type that needs to take off on the runway, the takeoff noise fusion area of ​​the aircraft type can be obtained by steps S101 to S103. The same is true for each other aircraft type that needs to take off on the runway. In this way, the takeoff noise fusion area of ​​each aircraft type can be obtained respectively.

[0093] Then, the union of the takeoff noise fusion areas of each type of aircraft can be obtained to obtain the total takeoff noise area of ​​the aircraft.

[0094] In step S104, for the scenario where the aircraft lands on the runway, a first landing noise area corresponding to the nearest landing position of the aircraft is obtained, and a second landing noise area corresponding to the farthest landing position of the aircraft is obtained. The noise in the first landing noise area is greater than or equal to the preset maximum tolerance decibel, and the noise in the second landing noise area is greater than or equal to the preset maximum tolerance decibel.

[0095] The noise outside the first drop noise area is less than the preset maximum tolerance decibel.

[0096] The noise outside the second drop noise area is less than the preset maximum tolerance decibel.

[0097] The maximum tolerable decibel may include 70dB or 75dB, etc., which may be determined according to actual conditions and is not limited in this application.

[0098] In a scenario where an aircraft lands on a runway, the position where the aircraft just touches the ground on the runway can be regarded as the landing position.

[0099] The runway is straight and has a certain length. For any type of aircraft that needs to land on the runway, the starting point of the runway is the closest take-off position for the aircraft of that type.

[0100] In addition, the length of the runway is limited. In the scenario where an aircraft of this model lands on the runway, if the aircraft of this model lands and glides near the end of the runway, a flight accident may occur. Therefore, the aircraft of this model needs to touch the ground and glide at least a certain distance before the end of the runway. That is, "at least a certain distance" of the aircraft of this model is a fixed value, which is determined when the aircraft of this model leaves the factory. In this way, the position on the runway that is "at least a certain distance" away from the end of the runway is the farthest landing position of the aircraft of this model.

[0101] For every other type of aircraft that needs to land on a runway.

[0102] The model of the aircraft that needs to land on the runway can be determined according to actual conditions, for example, according to the specifications of the runway, or according to the business of the airport to which the runway belongs, and this application does not impose any limitation on this.

[0103] In one embodiment of the present application, obtaining the first landing noise area corresponding to the most recent landing position of the aircraft may refer to the following process, including:

[0104] 1041. Determine a landing height corresponding to the aircraft, wherein, when the height of the aircraft during landing is less than or equal to the landing height corresponding to the aircraft, there is noise generated by the aircraft on the ground that is greater than a preset maximum tolerable decibel.

[0105] When the height of the aircraft during landing is greater than the landing height, there is no noise on the ground generated by the aircraft that is greater than the preset maximum tolerable decibel.

[0106] For any type of aircraft that needs to land on a popular runway, the landing height corresponding to the aircraft of this type can be determined in advance. When the height of the aircraft of this type during landing is less than or equal to the landing height, there is noise on the ground that is greater than the preset maximum tolerable decibel generated by the aircraft of this type. When the height of the aircraft of this type during landing is greater than the landing height, there is no noise on the ground that is greater than the preset maximum tolerable decibel generated by the aircraft of this type. That is, the landing height corresponding to the aircraft of this type is obtained through multiple experimental tests after knowing the preset maximum tolerable decibel, and the specific test method will not be described in detail.

[0107] And, the model of the aircraft of the model is obtained, and the maximum tolerable decibel involved in the runway is obtained. The maximum tolerable decibel involved in the runway is set manually, for example, according to the provisions of laws and regulations, or according to the results of consultation with residents around the runway, etc.

[0108] Then, the model of the aircraft, the maximum tolerable decibel involved in the flight runway, and the landing altitude corresponding to the aircraft may be formed into a corresponding table item and stored in the corresponding relationship between the aircraft model, the maximum tolerable decibel, and the landing altitude.

[0109] The same is true for every other type of aircraft that needs to land on a popular runway.

[0110] In this way, in this step, the model of one of the aircraft types that needs to land on the popular runway can be determined, and then, in the correspondence between the aircraft model, the maximum tolerable decibel and the landing altitude, the landing altitude corresponding to the model of the aircraft and the preset maximum tolerable decibel is searched to obtain the landing altitude corresponding to the aircraft model.

[0111] For example, the landing altitude of the aircraft of this model is 750 meters. When the altitude of the aircraft of this model is less than or equal to 750 meters during the landing process, there is noise greater than 70 decibels generated by the aircraft of this model on the ground. When the altitude of the aircraft of this model is greater than 750 meters during the landing process, there is no noise greater than 70 decibels generated by the aircraft of this model on the ground.

[0112] Or, for another example, the landing altitude corresponding to the aircraft of this model is 700 meters, wherein, when the altitude of the aircraft of this model is less than or equal to 700 meters during the landing process, there is noise greater than 70 decibels generated by the aircraft of this model on the ground. When the altitude of the aircraft of this model is greater than 700 meters during the landing process, there is no noise greater than 70 decibels generated by the aircraft of this model on the ground.

[0113] 1042. Determine a landing direction distance corresponding to the aircraft according to a landing height corresponding to the aircraft. The landing direction distance corresponding to the aircraft is: the distance between a projection position of the aircraft on the ground and a position where the aircraft touches the ground when the aircraft reaches the landing height corresponding to the aircraft.

[0114] The falling direction is horizontal.

[0115] Different models of aircraft have different landing heights and different landing direction distances.

[0116] Therefore, for any aircraft type that needs to land on a popular runway, the landing direction distance of the aircraft type can be calculated in advance, and then the model of the aircraft type, the landing height corresponding to the aircraft type, and the landing direction distance of the aircraft type are formed into a corresponding table item and stored in the corresponding relationship between the aircraft type, the landing height, and the landing direction distance. The same is true for each other aircraft type that needs to land on a popular runway.

[0117] In this way, when determining the landing direction distance based on the landing altitude, the model of one of the aircraft types that needs to land on the popular runway can be determined, and then, in the correspondence between the aircraft model, landing altitude and landing direction distance, the landing direction distance corresponding to the model of the aircraft model and the landing altitude corresponding to the aircraft model can be found.

[0118] For example, the landing direction distance of this model of aircraft is 7.6 kilometers, and the distance between "the position of this model of aircraft on the ground when it starts to perform landing operations" and "the projection position of this model of aircraft on the ground when the aircraft reaches the landing height of 700 meters corresponding to this model of aircraft" is 7.6 kilometers.

[0119] 1043. Determine the vertical distance corresponding to the aircraft. During the taxiing process after the aircraft lands and performs a landing operation, within the vertical distance corresponding to the aircraft in the vertical direction, the noise generated by the aircraft is greater than or equal to the preset maximum tolerance decibel, and the vertical direction is the horizontal direction, and the vertical direction is perpendicular to the landing direction.

[0120] Outside the vertical distance corresponding to the aircraft in the vertical direction, the noise generated by the aircraft is less than the preset maximum tolerance decibel.

[0121] For any type of aircraft that needs to land on a wind runway, the vertical distance corresponding to the aircraft of this type can be determined in advance. During the taxiing process after landing of the aircraft of this type, within the vertical distance corresponding to the aircraft in the vertical direction, the noise generated by the aircraft of this type is greater than or equal to the preset maximum tolerance decibel, and outside the vertical distance corresponding to the aircraft in the vertical direction, the noise generated by the aircraft of this type is less than the preset maximum tolerance decibel. The vertical distance corresponding to the aircraft of this type can be obtained through multiple experimental tests, and the specific test method will not be described in detail.

[0122] And, the model of the aircraft of the model is obtained, and the maximum tolerable decibel involved in the runway is obtained. The maximum tolerable decibel involved in the runway is set manually, for example, according to the provisions of laws and regulations, or according to the results of consultation with residents around the runway, etc.

[0123] Then, the model of the aircraft, the maximum tolerable decibel involved in the flight runway, and the vertical distance corresponding to the aircraft of the model may be formed into a corresponding table item and stored in the corresponding relationship between the aircraft model, the maximum tolerable decibel, and the vertical distance.

[0124] The same is true for every other type of aircraft that needs to land on a popular runway.

[0125] Thus, in this step, the model of one of the aircraft types that needs to land on the popular runway can be determined, and then, in the correspondence between the aircraft model, the maximum tolerable decibel and the vertical distance, the vertical distance corresponding to the model of the aircraft and the preset maximum tolerable decibel is searched to obtain the vertical distance corresponding to the model of the aircraft.

[0126] For example, the vertical distance corresponding to this model of aircraft may be 0.4 kilometers.

[0127] 1044. Determine a first landing noise area corresponding to a nearest landing position of the aircraft according to a landing direction distance corresponding to the aircraft and a vertical direction distance corresponding to the aircraft.

[0128] In one example, in a scenario where an aircraft is performing a landing operation, the aircraft lands at the nearest landing position and glides after landing.

[0129] Among them, from the projection position of the landing height on the ground, the shape of the noise area on the ground that is greater than or equal to the preset maximum tolerance decibel is a partial ellipse when the child lands closest to the ground. After touching the ground, the shape of the noise area on the ground that is greater than or equal to the preset maximum tolerance decibel is a gradually increasing isosceles triangle.

[0130] The length of the major semi-axis of the ellipse is the landing distance of the aircraft, and the length of the minor semi-axis of the ellipse is the vertical distance of the aircraft. For details, please refer to Figure 3 shown.

[0131] See also Figure 3 , the noise impact area when the aircraft approaches (landing) is illustrated as follows: Similar to the takeoff, the area where the ground noise is greater than 70dB when the aircraft approaches is also an elliptical area E2. However, since the gliding angle of the aircraft during approach (such as a 3° gliding angle) is smaller than the climbing angle during takeoff, the major axis of E2 is longer than the major axis of E1. At this time, X max =7.6km (the distance from the landing point along the runway). Since the aircraft is quieter when approaching than when taking off, the short axis of E2 is shorter than that of E1. max=400m (the distance from the landing point in the vertical direction of the runway).

[0132] In addition, for the specific process of "obtaining the second landing noise area corresponding to the farthest landing position of the aircraft", please refer to the aforementioned process of steps 1041 to 1044 of "obtaining the first landing noise area corresponding to the nearest landing position of the aircraft", which will not be described in detail here.

[0133] In step S105, based on the first landing noise area and the second landing noise area, a third landing noise area corresponding to the second middle position of the aircraft is obtained, the second middle position includes a position between the nearest landing position and the farthest landing position, and the noise in the third landing noise area is greater than or equal to a preset maximum tolerance decibel.

[0134] The noise outside the third landing noise area is less than the preset maximum tolerance decibel.

[0135] In this step, the fifth position and the sixth position farthest from the runway can be determined in the first landing noise area. For example, the fifth position and the sixth position farthest from the center line of the runway are determined. The fifth position and the sixth position are located on both sides of the runway, for example, the fifth position is located on one side of the runway, and the sixth position is located on the other side of the runway.

[0136] Furthermore, the seventh position and the eighth position farthest from the runway may be determined in the second landing noise area. For example, the seventh position and the eighth position farthest from the center line of the runway are determined. The seventh position and the eighth position are located on both sides of the runway, respectively, for example, the seventh position is located on one side of the runway, and the eighth position is located on the other side of the runway.

[0137] The area enclosed by the fifth position, the sixth position, the seventh position and the eighth position is determined as the third landing noise area.

[0138] Assuming that the fifth position and the seventh position are located on one side of the runway, and the sixth position and the eighth position are located on the other side of the runway, the rectangular area enclosed by the fifth position, the sixth position, the seventh position and the eighth position can be used as the third landing noise area. For example, the fifth position is connected with the sixth position, the sixth position is connected with the eighth position, the eighth position is connected with the seventh position, and the seventh position is connected with the fifth position to form a rectangular area, which is used as the third landing noise area.

[0139] In step S106, the first landing noise area, the second landing noise area and the third landing noise area are merged to obtain the total landing noise area of ​​the aircraft.

[0140] For example, the union of the first landing noise area, the second landing noise area, and the third landing noise area may be obtained to obtain the total landing noise area of ​​the aircraft.

[0141] In another embodiment of the present application, the runway is a long straight line having two endpoints, such as a first endpoint and a second endpoint. When the aircraft lands on the runway, it can land in the direction from the first endpoint to the second endpoint, or it can land in the direction from the second endpoint to the first endpoint.

[0142] Through the process of step S104 to step S105, the first landing noise area, the second landing noise area and the third landing noise area in the scene where the aircraft lands on the runway from the first end point to the second end point can be obtained, and then in step S106, the first landing noise area, the second landing noise area and the third landing noise area in the scene where the aircraft lands on the runway from the first end point to the second end point can be merged to obtain the landing noise area where the first end point points to the second end point.

[0143] Furthermore, the first landing noise area, the second landing noise area and the third landing noise area in the scene where the aircraft lands on the runway from the second endpoint to the first endpoint can be obtained, and then in step S106, the first landing noise area, the second landing noise area and the third landing noise area in the scene where the aircraft lands on the runway from the second endpoint to the first endpoint can be merged to obtain the landing noise area where the second endpoint points to the first endpoint.

[0144] Then, the landing noise area where the first endpoint points to the second endpoint and the landing noise area where the second endpoint points to the first endpoint can be merged to obtain the landing noise fusion area of ​​the aircraft.

[0145] Then, the total landing noise area of ​​the aircraft can be obtained according to the landing noise fusion area of ​​the aircraft. For example, the landing noise fusion area of ​​the aircraft is determined as the total landing noise area of ​​the aircraft.

[0146] In another embodiment of the present application, for any aircraft type that needs to land on the runway, the landing noise fusion area of ​​the aircraft type can be obtained through steps S104 to S106. The same is true for each other aircraft type that needs to land on the runway. In this way, the landing noise fusion area of ​​each aircraft type can be obtained respectively.

[0147] Then, the union of the landing noise fusion areas of each type of aircraft can be obtained, thereby obtaining the total landing noise area of ​​the aircraft.

[0148] In the present application, step S101 and step S104 may be executed in parallel or one after the other.

[0149] After step S101 is executed, step S102 may be executed, and after step S102 is executed, step S103 may be executed.

[0150] After step S104 is executed, step S105 may be executed, and after step S105 is executed, step S106 may be executed.

[0151] After step S103 and step S106 are executed, step S107 may be executed.

[0152] In step S107, the total noise area of ​​the runway is acquired according to the total takeoff noise area of ​​the aircraft and / or the total landing noise area of ​​the aircraft.

[0153] In one embodiment of the present application, the total takeoff noise area of ​​the aircraft is determined as the total noise area of ​​the flight runway.

[0154] Alternatively, in another embodiment of the present application, the total landing noise area of ​​the aircraft is determined as the total noise area of ​​the flight runway.

[0155] Alternatively, in another embodiment of the present application, the total takeoff noise area of ​​the aircraft and the total landing noise area of ​​the aircraft are merged, for example, the union of the total takeoff noise area and the total landing noise area is obtained, so as to obtain the total noise area of ​​the runway.

[0156] Through this application, the noise area of ​​the flight runway can be accurately obtained, and the scope of the airport noise involved in the airport can be accurately determined to assist in the evaluation of the airport noise environmental impact and to assist in the airport site selection.

[0157] The solution of the present application is illustrated by a specific embodiment, but it is not intended to limit the protection scope of the present application. Figure 4 , the process includes:

[0158] Step 1: Selection of spatial reference coordinate system. The geographic coordinate system is set to GCS_WGS_1984, and the projection coordinate system is set to WGS_1984_UTM_Zone_50N. More specifically, the UTM projection zone number in the projection coordinate system is equal to "the integer part of (longitude integer digit / 6) + 31". Since the longitude of Beijing Capital International Airport is about 116°, the UTM projection zone number = floor (116 / 6) + 31 = 19 + 31 = 50. The spatial reference obtained in this step is used as the model parameter of the noise contour model.

[0159] Step 2: Get the airport runway line vector file. Specifically, using the electronic satellite map as the standard base map, the three runways of Beijing Capital International Airport are digitally edited in the GIS software, and a separate line vector file (polyline shapefile) is generated for each runway. The geographic coordinate system of each line vector file is set to GCS_WGS_1984, and the projection coordinate system is set to WGS_1984_UTM_Zone_50N. The following steps take Runway 2 of Beijing Capital International Airport as an example to draw its ground 70dB noise contour line. The airport runway line vector file obtained in this step is used as the model parameter of the noise contour model.

[0160] Step 3: Get the parameter value of the "runway azimuth" (the angle rotated clockwise from the north direction) of the airport runway line vector obtained in step 2. Specifically, use the "Line Direction and Distance" function of the "COGO Report" tool in the "COGO" toolbox. First click the endpoint on the south side of Runway 2, and then click the endpoint on the north side of Runway 2. You can get the angle of Runway 2 rotating counterclockwise from the east direction, which is 96.53° here. It needs to be converted to the angle rotated clockwise from the north direction. The conversion process is 180°-(96.53°-90°)=173.47°. The airport runway azimuth obtained in this step is used as the model parameter of the noise contour model.

[0161] Step 4: Draw an elliptical area where the runway ground noise is greater than 70dB when the aircraft takes off.

[0162] The following steps are involved:

[0163] Step 4.1: Use the "Feature Vertex to Point" tool to create a feature class containing points generated from the specified point or location of the input feature. The specific parameter settings for this tool include: (1) "Input Feature" selects "Airport Runway", which is the Runway 2 line vector generated in step 1. (2) "Output Feature Class" selects a pre-created local folder path, such as "C: / output / End_Point1.shp". (3) "Point Type" specifies the location where the output point is created. Here, select "ALL", which means that a point is created at each vertex of the input feature.

[0164] Step 4.2: Use the "Add XY Coordinates" tool to add the fields POINT_X and POINT_Y to the point input features and calculate their values. The specific parameter settings for this tool include: Select the "End_Point1.shp" file generated in step 4.1 in "Input Features". This step can add the x and y coordinates of the two endpoints of Runway 2 to the attribute table of the "End_Point1.shp" point feature in the name of POINT_X and POINT_Y fields.

[0165] Step 4.3: Use the "Add Field" tool to add a new field to a table or feature class table, feature layer, and / or raster with attribute table. The specific parameter settings for this tool include: (1) Select "Output Feature 1" generated in step 4.2 for "Input Table" to select the input table or feature class to which the specified field is to be added. The field will be added to the existing input table / feature class. (2) Enter "Azimuth1" for "Field Name" to add the azimuth field of Runway 2 to the input table / feature class. (3) Select "FLOAT" for "Field Type" to set the field type of the new field to floating point. (4) Set "Field Precision" to 10, indicating the number of digits that can be stored in the field. (5) Set "Field Decimal Places" to 5, indicating the number of decimal places that can be stored in the field.

[0166] Step 4.4: Use the "Add Field" tool to add a new field to a table or feature class table, feature layer, and / or raster with attribute table. The specific parameter settings for this tool include: (1) Select "End_Point1.shp" generated in step 4.3 for "Input Table" to select the input table or feature class to which the specified field is to be added. The field will be added to the existing input table / feature class. (2) Enter "Major_Axis1" for "Field Name", indicating that the major axis field of the ellipse area with runway ground noise greater than 70dB when the aircraft takes off from Runway 2 will be added to the input table / feature class. (3) Select "FLOAT" for "Field Type", indicating that the field type of the new field is set to floating point. (4) Set "Field Precision" to 10, indicating the number of digits that can be stored in the field. (5) Set "Field Decimal Places" to 5, indicating the number of decimal places that can be stored in the field.

[0167] Step 4.5: Use the "Add Field" tool to add a new field to a table or feature class table, feature layer, and / or raster with attribute table. The specific parameter settings for this tool include: (1) Select "End_Point1.shp" generated in step 4.4 for "Input Table" to select the input table or feature class to which the specified field is to be added. The field will be added to the existing input table / feature class. (2) Enter "Minor_Axis1" for "Field Name", indicating that the minor axis field of the ellipse area with runway ground noise greater than 70dB when the aircraft takes off from Runway 2 will be added to the input table / feature class. (3) Select "FLOAT" for "Field Type", indicating that the field type of the new field is set to floating point. (4) Set "Field Precision" to 10, indicating the number of digits that can be stored in the field. (5) Set "Field Decimal Places" to 5, indicating the number of decimal places that can be stored in the field.

[0168] Step 4.6: Use the "Calculate Field" tool to calculate the value of a field for a feature class, feature layer, or raster. The specific parameter settings for this tool include: (1) "Input Table" selects "End_Point1.shp" generated in step 4.5, which represents the table or feature class of the field to be updated by the new calculation. (2) "Field Name" selects the "Azimuth1" field created in step 4.3, which will be updated by the new calculation. (3) "Expression" selects the "Runway Azimuth" set in step 3, which is used to create a calculation expression to fill the selected rows with values.

[0169] Step 4.7: Use the "Calculate Field" tool to calculate the value of a field for a feature class, feature layer, or raster. The specific parameter settings for this tool include: (1) Select "End_Point1.shp" generated in step 4.6 for "Input Table", which represents the table or feature class of the field to be updated by the new calculation. (2) Select the "Major_Axis1" field created in step 4.4 for "Field Name", which will be updated by the new calculation. (3) Enter "7" for "Expression", which indicates that the length of the major semi-axis of the ellipse is 7 km, to create a calculation expression for the values ​​to fill the selected rows.

[0170] Step 4.8: Use the "Calculate Field" tool to calculate the value of a field for a feature class, feature layer, or raster. The specific parameter settings for this tool include: (1) Select "End_Point1.shp" generated in step 4.7 for "Input Table", which indicates the table or feature class of the field to be updated by the new calculation. (2) Select the "Minor_Axis1" field created in step 4.5 for "Field Name", which will be updated by the new calculation. (3) Enter "0.8" for "Expression", which indicates that the length of the minor semi-axis of the ellipse is 0.8 km, and is used to create a calculation expression to fill the selected row with values.

[0171] Step 4.9: Use the "Table to Ellipse" tool to create a new feature class containing geodetic ellipse features constructed based on the values ​​in the table's x-coordinate field, y-coordinate field, major axis field, minor axis field, and azimuth field. The specific parameter settings for this tool include: (1) "Input Table" selects "End_Point1.shp" generated in step 4.8. (2) "Output Feature Class" contains the geodetic ellipse represented as a densified polyline, which is set to "C:\output\TableToEllipse1" here. (3) "X Field" selects the "POINT_X" field created in step 4.2. This is a numeric field in the input table that contains the x-coordinate of the center point of the ellipse used to locate the output coordinate system specified by the spatial reference parameters. (4) "Y Field" selects the "POINT_Y" field created in step 4.2. This is a numeric field in the input table that contains the y-coordinate of the center point of the ellipse used to locate the output coordinate system specified by the spatial reference parameters. (5) For "Major Field", select the "Major_Axis1" field created in step 4.4. This is a numeric field in the input table that contains the length of the major axis of the ellipse. (6) For "Secondary Field", select the "Minor_Axis1" field created in step 4.5. This is a numeric field in the input table that contains the length of the minor axis of the ellipse. (7) For "Distance Unit", select "KILOMETERS", indicating that the values ​​of the major axis field and the minor axis field are in kilometers. (8) For "Azimuth Field", select the "Azimuth1" field created in step 4.3. This is a numeric field in the input table that contains the azimuth value of the major axis rotation of the output ellipse, measured clockwise from the north. (9) For "Azimuth Unit", select "DEGREES", indicating that the values ​​in the azimuth field are in decimal degrees. (10) For "Spatial Reference", select the "Spatial Reference" model parameter created in step 1 as the spatial reference of the output feature class.

[0172] Step 4.10: Use the "Feature to Polygon_Wide Ellipse" tool to create a feature class containing the polygons generated from the areas enclosed by the input line or polygon features. The specific parameter settings for this tool include: (1) "Input Features" selects "TableToEllipse1" generated in step 4.9. (2) "Output Feature Class" is set to "C:\output\Ellipse_Polygon1".

[0173] Step 5: Draw an elliptical area where the runway ground noise is greater than 70dB when the aircraft approaches.

[0174] The following steps are involved:

[0175] Step 5.1: Use the "Feature Vertex to Point" tool to create a feature class containing points generated from the specified point or location of the input feature. The specific parameter settings for this tool include: (1) "Input Feature" selects "Airport Runway", which is the Runway 2 line vector generated in step 1. (2) "Output Feature Class" selects a pre-created local folder path, such as "C: / output / End_Point2.shp". (3) "Point Type" specifies the location where the output point is created. Here, select "ALL", which means that a point is created at each vertex of the input feature.

[0176] Step 5.2: Use the "Add XY Coordinates" tool to add the fields POINT_X and POINT_Y to the point input feature and calculate their values. The specific parameter settings for this tool include: Select the "End_Point2.shp" file generated in step 5.1 in "Input Features". This step can add the x and y coordinates of the two endpoints of Runway 2 to the attribute table of the "End_Point2.shp" point feature in the name of POINT_X and POINT_Y fields.

[0177] Step 5.3: Use the "Add Field" tool to add a new field to a table or feature class table, feature layer, and / or raster with attribute table. The specific parameter settings for this tool include: (1) Select "Output Feature 2" generated in step 5.2 for "Input Table" to select the input table or feature class to which the specified field is to be added. The field will be added to the existing input table / feature class. (2) Enter "Azimuth2" for "Field Name" to add the azimuth field of Runway 2 to the input table / feature class. (3) Select "FLOAT" for "Field Type" to set the field type of the new field to floating point. (4) Set "Field Precision" to 10, indicating the number of digits that can be stored in the field. (5) Set "Field Decimal Places" to 5, indicating the number of decimal places that can be stored in the field.

[0178] Step 5.4: Use the "Add Field" tool to add a new field to a table or feature class table, feature layer, and / or raster with attribute table. The specific parameter settings for this tool include: (1) Select "End_Point2.shp" generated in step 5.3 for "Input Table" to select the input table or feature class to which the specified field is to be added. The field will be added to the existing input table / feature class. (2) Enter "Major_Axis2" for "Field Name", indicating that the major axis field of the ellipse area with runway ground noise greater than 70dB during aircraft approach to Runway 2 is added to the input table / feature class. (3) Select "FLOAT" for "Field Type", indicating that the field type of the new field is set to floating point. (4) Set "Field Precision" to 10, indicating the number of digits that can be stored in the field. (5) Set "Field Decimal Places" to 5, indicating the number of decimal places that can be stored in the field.

[0179] Step 5.5: Use the "Add Field" tool to add a new field to a table or feature class table, feature layer, and / or raster with attribute table. The specific parameter settings for this tool include: (1) Select "End_Point2.shp" generated in step 5.4 for "Input Table" to select the input table or feature class to which the specified field is to be added. The field will be added to the existing input table / feature class. (2) Enter "Minor_Axis2" for "Field Name", indicating that the minor axis field of the ellipse area with runway ground noise greater than 70dB during aircraft approach to Runway 2 will be added to the input table / feature class. (3) Select "FLOAT" for "Field Type", indicating that the field type of the new field is set to floating point. (4) Set "Field Precision" to 10, indicating the number of digits that can be stored in the field. (5) Set "Field Decimal Places" to 5, indicating the number of decimal places that can be stored in the field.

[0180] Step 5.6: Use the "Calculate Field" tool to calculate the value of a field for a feature class, feature layer, or raster. The specific parameter settings for this tool include: (1) "Input Table" selects "End_Point2.shp" generated in step 5.5, which represents the table or feature class of the field to be updated by the new calculation. (2) "Field Name" selects the "Azimuth2" field created in step 5.3, which will be updated by the new calculation. (3) "Expression" selects the "Runway Azimuth" set in step 3, which is used to create a calculation expression to fill the selected rows with values.

[0181] Step 5.7: Use the "Calculate Field" tool to calculate the value of a field for a feature class, feature layer, or raster. The specific parameter settings for this tool include: (1) Select "End_Point2.shp" generated in step 5.6 for "Input Table", which represents the table or feature class of the field to be updated by the new calculation. (2) Select the "Major_Axis2" field created in step 5.4 for "Field Name", which will be updated by the new calculation. (3) Enter "7.6" for "Expression", which indicates that the length of the major semi-axis of the ellipse is 7.6 km, to create a calculation expression to fill the selected row with values.

[0182] Step 5.8: Use the "Calculate Field" tool to calculate the value of a field for a feature class, feature layer, or raster. The specific parameter settings for this tool include: (1) Select "End_Point2.shp" generated in step 5.7 for "Input Table", which represents the table or feature class of the field to be updated by the new calculation. (2) Select the "Minor_Axis2" field created in step 5.5 for "Field Name", which will be updated by the new calculation. (3) Enter "0.4" for "Expression", which means that the length of the minor semi-axis of the ellipse is 0.4 km, which is used to create a calculation expression to fill the selected row with values.

[0183] Step 5.9: Use the "Table to Ellipse" tool to create a new feature class containing geodetic ellipse features constructed based on the values ​​in the table's x-coordinate field, y-coordinate field, major axis field, minor axis field, and azimuth field. The specific parameter settings for this tool include: (1) "Input Table" selects "End_Point2.shp" generated in step 5.8. (2) "Output Feature Class" contains the geodetic ellipse represented as a densified polyline, which is set to "C:\output\TableToEllipse2" here. (3) "X Field" selects the "POINT_X" field created in step 5.2. This is a numeric field in the input table that contains the x-coordinate of the center point of the ellipse used to locate the output coordinate system specified by the spatial reference parameters. (4) "Y Field" selects the "POINT_Y" field created in step 5.2. This is a numeric field in the input table that contains the y-coordinate of the center point of the ellipse used to locate the output coordinate system specified by the spatial reference parameters. (5) For "Major Field", select the "Major_Axis2" field created in step 5.4. This is a numeric field in the input table that contains the length of the major axis of the ellipse. (6) For "Secondary Field", select the "Minor_Axis2" field created in step 5.5. This is a numeric field in the input table that contains the length of the minor axis of the ellipse. (7) For "Distance Unit", select "KILOMETERS", indicating that the values ​​of the major axis field and the minor axis field are in kilometers. (8) For "Azimuth Field", select the "Azimuth2" field created in step 5.3. This is a numeric field in the input table that contains the azimuth value of the major axis rotation of the output ellipse, measured clockwise from the north. (9) For "Azimuth Unit", select "DEGREES", indicating that the values ​​in the azimuth field are in decimal degrees. (10) For "Spatial Reference", select the "Spatial Reference" model parameter created in step 1 as the spatial reference of the output feature class.

[0184] Step 5.10: Use the "Feature to Polygon_Wide Ellipse" tool to create a feature class containing the polygons generated from the areas enclosed by the input line or polygon features. The specific parameter settings for this tool include: (1) "Input Features" selects "TableToEllipse2" generated in step 5.9. (2) "Output Feature Class" is set to "C:\output\Ellipse_Polygon2".

[0185] Step 6: Use the "Buffer_Horizontal Rectangle" tool, which creates a buffer polygon within a specified distance around the input feature. Here, a rectangular buffer is created on both sides with the runway as the center line. The specific parameter settings for this tool include: (1) "Input Feature" selects the "Airport Runway" model parameter created in Step 2, indicating the input line feature to be buffered. (2) "Output Feature Class" is set to "C:\output\Rectangular_Buffer", which is the feature class of the output buffer. (3) "Distance" selects "Linear Unit" and enters 0.4, the unit is kilometers, indicating that the distance between the input feature to be buffered is 0.4km, which is equal to half the length of the minor semi-axis of the ellipse area with runway ground noise greater than 70dB when the aircraft takes off. (4) "Side Type" selects "FULL". For line input features, buffers will be generated on both sides of the line. (5) "End Type" selects "FLAT". The shape of the buffer at the end of the line input feature is set to flat or square, and terminates at the end of the input line feature. (6) Select "PLANAR" for "Method" to specify that the method used to create the buffer is the planar method. If the input features are in a projected coordinate system, a Euclidean buffer will be created. (7) Select "NONE" for "Merge Type" to ignore overlap and maintain an independent buffer for each feature.

[0186] Step 7: Combine and fuse the four ellipses made in steps 4, 5, and 6 with a rectangular vector to obtain the 70dB noise contour line. This includes the following steps:

[0187] Step 7.1: Use the "Merge" tool, which merges multiple input datasets of the same data type into a new single output dataset. This tool can merge point, line, or polygon feature classes or tables. The specific parameter settings for this tool include: (1) "Input dataset" selects "Ellipse_Polygon1" generated in step 4.10, "Ellipse_Polygon2" generated in step 5.10, and "Rectangular_Buffer" generated in step 6, indicating the input datasets to be merged into a new input dataset. (2) "Output dataset" is set to "C:\output\Merge_Buffer", indicating the path where the output dataset is saved after all input datasets are merged.

[0188] Step 7.2: Use the "Merge" tool, which aggregates features based on specified attributes. The specific parameter settings for this tool include: (1) "Input Features" selects "Merge_Buffer" generated in step 7.1, indicating the features to be aggregated. (2) "Output Feature Class" is set to "C:\output\Noise_Buffer.shp", indicating the save path of the feature class to be created that will contain the aggregated features. (3) Select "Create multi-part features" to specify that multi-part features are allowed in the output feature class. (4) Select "Cancel line segmentation" to set the fusion method of line features. Lines will only be merged when two lines have a common end vertex. The "Noise_Buffer.shp" file output by this step is a surface vector feature, and the boundary of the area is the 70dB noise contour line of the airport runway.

[0189] It should be noted that, for the method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the order of the actions described, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions involved are not necessarily required by the present application.

[0190] Reference Figure 5 , shows a structural block diagram of a device for acquiring a noise area of ​​a flight runway of the present application, the device comprising:

[0191] The first acquisition module 11 is used for acquiring, for a scenario in which an aircraft takes off on a runway, a first takeoff noise area corresponding to a position of the aircraft closest to the ground, and a second takeoff noise area corresponding to a position of the aircraft farthest from the ground, wherein the noise in the first takeoff noise area is greater than or equal to a preset maximum tolerable decibel, and the noise in the second takeoff noise area is greater than or equal to the preset maximum tolerable decibel;

[0192] A second acquisition module 12 is used to acquire a third takeoff noise area corresponding to a first middle position of the aircraft according to the first takeoff noise area and the second takeoff noise area, wherein the first middle position includes a position between a position closest to the ground and a position farthest from the ground, and the noise in the third takeoff noise area is greater than or equal to a preset maximum tolerance decibel;

[0193] A first fusion module 13 is used to fuse the first takeoff noise area, the second takeoff noise area and the third takeoff noise area to obtain a total takeoff noise area of ​​the aircraft;

[0194] The third acquisition module 14 is used to acquire, for a scenario in which an aircraft lands on a runway, a first landing noise area corresponding to the nearest landing position of the aircraft, and a second landing noise area corresponding to the farthest landing position of the aircraft, wherein the noise in the first landing noise area is greater than or equal to a preset maximum tolerance decibel, and the noise in the second landing noise area is greater than or equal to the preset maximum tolerance decibel;

[0195] A fourth acquisition module 15 is configured to acquire, based on the first landing noise area and the second landing noise area, a third landing noise area corresponding to a second middle position of the aircraft, wherein the second middle position includes a position between a nearest landing position and a farthest landing position, and the noise in the third landing noise area is greater than or equal to a preset maximum tolerance decibel;

[0196] A second fusion module 16 is used to fuse the first landing noise area, the second landing noise area and the third landing noise area to obtain a total landing noise area of ​​the aircraft;

[0197] The fifth acquisition module 17 is used to acquire the total noise area of ​​the runway according to the total takeoff noise area of ​​the aircraft and / or the total landing noise area of ​​the aircraft.

[0198] In an optional implementation, the fifth acquisition module includes:

[0199] A first determining unit, configured to determine the total takeoff noise area of ​​the aircraft as the total noise area of ​​the flight runway;

[0200] or,

[0201] A second determining unit is used to determine the total landing noise area of ​​the aircraft as the total noise area of ​​the flight runway;

[0202] or,

[0203] The fusion unit is used to fuse the total takeoff noise area of ​​the aircraft and the total landing noise area of ​​the aircraft to obtain the total noise area of ​​the runway.

[0204] In an optional implementation, the first acquisition module includes:

[0205] A third determining unit is used to determine a take-off height corresponding to the aircraft, wherein, when the height of the aircraft during take-off is less than or equal to the take-off height corresponding to the aircraft, there is noise generated by the aircraft on the ground that is greater than a preset maximum tolerance decibel;

[0206] a fourth determining unit, configured to determine a take-off direction distance corresponding to the aircraft according to a take-off height corresponding to the aircraft, wherein the take-off direction distance corresponding to the aircraft is: a distance between a position of the aircraft on the ground when the aircraft starts to perform a take-off operation and a projection position of the aircraft on the ground when the aircraft reaches the take-off height corresponding to the aircraft;

[0207] A fifth determining unit is used to determine a vertical distance corresponding to the aircraft, where, during the process of the aircraft performing a take-off operation but not leaving the ground, within a vertical distance corresponding to the aircraft in the vertical direction, the noise generated by the aircraft is greater than or equal to a preset maximum tolerance decibel, where the vertical direction is a horizontal direction, and the vertical direction is perpendicular to the take-off direction;

[0208] The sixth determining unit is used to determine a first takeoff noise area corresponding to the closest takeoff position of the aircraft according to the takeoff direction distance corresponding to the aircraft and the vertical direction distance corresponding to the aircraft.

[0209] In an optional implementation, the third determining unit includes:

[0210] A first determining subunit, used to determine the model of the aircraft;

[0211] The first search subunit is used to search for the take-off altitude corresponding to the aircraft model and the preset maximum tolerable decibel in the correspondence between the aircraft model, the maximum tolerable decibel and the take-off altitude.

[0212] In an optional implementation, the fourth determining unit includes:

[0213] A second determining subunit, used to determine the model of the aircraft;

[0214] The second search subunit is used to search for the take-off direction distance corresponding to the aircraft model and the take-off height in the correspondence between the aircraft model, the take-off height and the take-off direction distance.

[0215] In an optional implementation, the fifth determining unit includes:

[0216] A third determining subunit is used to determine the model of the aircraft;

[0217] The third search subunit is used to search for the vertical distance corresponding to the aircraft model and the preset maximum tolerance decibel in the corresponding relationship between the aircraft model, the maximum tolerance decibel and the vertical distance.

[0218] In an optional implementation, the second acquisition module includes:

[0219] a seventh determining unit, configured to determine, in the first takeoff noise area, a first position and a second position which are farthest from the flight runway; the first position is located on one side of the flight runway, and the second position is located on the other side of the flight runway;

[0220] an eighth determining unit, configured to determine a third position and a fourth position which are farthest from the runway in the second takeoff noise area; the third position is located on one side of the runway, and the fourth position is located on the other side of the runway;

[0221] The ninth determining unit is configured to determine an area enclosed by the first position, the second position, the third position, and the fourth position as a third takeoff noise area.

[0222] In the present application, for the scenario of an aircraft taking off on a runway, a first takeoff noise area corresponding to the nearest takeoff position of the aircraft is obtained, and a second takeoff noise area corresponding to the farthest position of the aircraft is obtained. The noise in the first takeoff noise area is greater than or equal to the preset maximum tolerance decibel. The noise in the second takeoff noise area is greater than or equal to the preset maximum tolerance decibel; based on the first takeoff noise area and the second takeoff noise area, a third takeoff noise area corresponding to the first middle position of the aircraft is obtained, the first middle position includes a position between the nearest takeoff position and the farthest position, and the noise in the third takeoff noise area is greater than or equal to the preset maximum tolerance decibel; the first takeoff noise area, the second takeoff noise area and the third takeoff noise area are merged to obtain the total takeoff noise area of ​​the aircraft; for the scenario of an aircraft landing on a runway, a first landing noise area corresponding to the nearest landing position of the aircraft is obtained, and a second landing noise area corresponding to the farthest landing position of the aircraft is obtained. The noise in the first landing noise area is greater than or equal to the preset maximum tolerable decibel, and the noise in the second landing noise area is greater than or equal to the preset maximum tolerable decibel; based on the first landing noise area and the second landing noise area, the third landing noise area corresponding to the second middle position of the aircraft is obtained, the second middle position includes the position between the nearest landing position and the farthest landing position, and the noise in the third landing noise area is greater than or equal to the preset maximum tolerable decibel; the first landing noise area, the second landing noise area and the third landing noise area are merged to obtain the total landing noise area of ​​the aircraft; the total noise area of ​​the runway is obtained according to the total takeoff noise area of ​​the aircraft and / or the total landing noise area of ​​the aircraft.

[0223] Through this application, the noise area of ​​the flight runway can be accurately obtained, and the scope of the airport noise involved in the airport can be accurately determined to assist in the evaluation of the airport noise environmental impact and to assist in the airport site selection.

[0224] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0225] Optionally, an embodiment of the present application further provides an electronic device, comprising: a processor, a memory, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, the various processes of the above-mentioned method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0226] The embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the above method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. The computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0227] Figure 6 800 is a block diagram of an electronic device 800 shown in the present application. For example, the electronic device 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0228] Reference Figure 6 , the electronic device 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output (I / O) interface 812 , a sensor component 814 , and a communication component 816 .

[0229] The processing component 802 generally controls the overall operation of the electronic device 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0230] The memory 804 is configured to store various types of data to support operations on the device 800. Examples of such data include instructions for any application or method operating on the electronic device 800, contact data, phone book data, messages, images, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0231] The power supply component 806 provides power to the various components of the electronic device 800. The power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 800.

[0232] The multimedia component 808 includes a screen that provides an output interface between the electronic device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and the rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0233] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the electronic device 800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0234] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0235] The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the electronic device 800. For example, the sensor assembly 814 can detect the open / closed state of the device 800, the relative positioning of components, such as the display and keypad of the electronic device 800, and the sensor assembly 814 can also detect the position change of the electronic device 800 or a component of the electronic device 800, the presence or absence of contact between the user and the electronic device 800, the orientation or acceleration / deceleration of the electronic device 800, and the temperature change of the electronic device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0236] The communication component 816 is configured to facilitate wired or wireless communication between the electronic device 800 and other devices. The electronic device 800 can access a wireless network based on a communication standard, such as WiFi, a carrier network (such as 2G, 3G, 4G or 5G), or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast operation information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0237] In an exemplary embodiment, the electronic device 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above methods.

[0238] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, and the instructions can be executed by a processor 820 of an electronic device 800 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0239] Figure 71 is a block diagram of an electronic device 1900 shown in the present application. For example, the electronic device 1900 may be provided as a server.

[0240] Reference Figure 7 , the electronic device 1900 includes a processing component 1922, which further includes one or more processors, and a memory resource represented by a memory 1932 for storing instructions executable by the processing component 1922, such as an application. The application stored in the memory 1932 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 1922 is configured to execute instructions to perform the above method.

[0241] The electronic device 1900 may also include a power supply component 1926 configured to perform power management of the electronic device 1900, a wired or wireless network interface 1950 configured to connect the electronic device 1900 to a network, and an input / output (I / O) interface 1958. The electronic device 1900 may operate based on an operating system stored in the memory 1932, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™ or the like.

[0242] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0243] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0244] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0245] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in the present application can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0246] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0247] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0248] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0249] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0250] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

[0251] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for acquiring a noise area of ​​a flight runway, characterized in that: The method comprises: For a scenario where an aircraft takes off on a runway, a first takeoff noise area corresponding to the position of the aircraft closest to the ground is obtained, and a second takeoff noise area corresponding to the position of the aircraft farthest from the ground is obtained. The noise in the first takeoff noise area is greater than or equal to a preset maximum tolerable decibel, and the noise in the second takeoff noise area is greater than or equal to a preset maximum tolerable decibel; According to the first takeoff noise area and the second takeoff noise area, a third takeoff noise area corresponding to a first middle position of the aircraft is acquired, the first middle position includes a position between a position closest to the ground and a position farthest from the ground, and noise in the third takeoff noise area is greater than or equal to a preset maximum tolerance decibel; The first takeoff noise area, the second takeoff noise area and the third takeoff noise area are merged to obtain the total takeoff noise area of ​​the aircraft; For a scenario where an aircraft lands on a runway, a first landing noise area corresponding to the nearest landing position of the aircraft is obtained, and a second landing noise area corresponding to the farthest landing position of the aircraft is obtained, the noise in the first landing noise area is greater than or equal to a preset maximum tolerance decibel, and the noise in the second landing noise area is greater than or equal to the preset maximum tolerance decibel; According to the first landing noise area and the second landing noise area, a third landing noise area corresponding to a second middle position of the aircraft is acquired, wherein the second middle position includes a position between a nearest landing position and a farthest landing position, and noise in the third landing noise area is greater than or equal to a preset maximum tolerance decibel; The first landing noise area, the second landing noise area and the third landing noise area are merged to obtain a total landing noise area of ​​the aircraft; The total noise area of ​​the runway is obtained according to the total takeoff noise area of ​​the aircraft and / or the total landing noise area of ​​the aircraft.

2. The method according to claim 1, characterized in that The obtaining of the total noise area of ​​the runway according to the total takeoff noise area of ​​the aircraft and / or the total landing noise area of ​​the aircraft includes: The total takeoff noise area of ​​the aircraft is determined as the total noise area of ​​the flight runway; or, The total landing noise area of ​​the aircraft is determined as the total noise area of ​​the flight runway; or, The total noise area of ​​the aircraft's takeoff noise and the total noise area of ​​the aircraft's landing noise are combined to obtain the total noise area of ​​the runway.

3. The method according to claim 1, characterized in that The obtaining of a first takeoff noise area corresponding to the closest takeoff position of the aircraft includes: Determining a take-off altitude corresponding to the aircraft, wherein, when the altitude of the aircraft during take-off is less than or equal to the take-off altitude corresponding to the aircraft, there is noise generated by the aircraft on the ground that is greater than a preset maximum tolerance decibel; Determine the take-off direction distance corresponding to the aircraft according to the take-off height corresponding to the aircraft, the take-off direction distance corresponding to the aircraft being: the distance between the position of the aircraft on the ground when the aircraft starts to perform the take-off operation and the projection position of the aircraft on the ground when the aircraft reaches the take-off height corresponding to the aircraft; Determine the vertical distance corresponding to the aircraft. When the aircraft is performing takeoff but not leaving the ground, within the vertical distance corresponding to the aircraft in the vertical direction, the noise generated by the aircraft is greater than or equal to the preset maximum tolerance decibel. The vertical direction is the horizontal direction, and the vertical direction is perpendicular to the takeoff direction. A first takeoff noise area corresponding to the closest takeoff position of the aircraft is determined according to the takeoff direction distance corresponding to the aircraft and the vertical direction distance corresponding to the aircraft.

4. The method according to claim 3, characterized in that Determining the take-off altitude corresponding to the aircraft includes: determining the model of the aircraft; In the correspondence between the aircraft model, the maximum tolerable decibel and the take-off altitude, the take-off altitude corresponding to the aircraft model and the preset maximum tolerable decibel is searched.

5. The method according to claim 3, characterized in that: Determining the take-off direction distance corresponding to the aircraft according to the take-off height corresponding to the aircraft includes: determining the model of the aircraft; In the correspondence between the aircraft model, take-off altitude and take-off direction distance, the take-off direction distance corresponding to the aircraft model and the take-off altitude is searched.

6. The method according to claim 3, characterized in that: Determining the vertical distance corresponding to the aircraft includes: determining the model of the aircraft; In the correspondence between the aircraft model, the maximum tolerable decibel and the vertical distance, the vertical distance corresponding to the aircraft model and the preset maximum tolerable decibel is searched.

7. The method according to claim 1, characterized in that The acquiring, according to the first takeoff noise area and the second takeoff noise area, a third takeoff noise area corresponding to the first intermediate position of the aircraft comprises: Determine a first position and a second position that are farthest from the runway in the first takeoff noise area; the first position is located on one side of the runway, and the second position is located on the other side of the runway; Determining a third position and a fourth position that are farthest from the runway in the second takeoff noise area; the third position is located on one side of the runway, and the fourth position is located on the other side of the runway; An area enclosed by the first position, the second position, the third position, and the fourth position is determined as a third takeoff noise area.

8. A device for acquiring a noise area of ​​a flight runway, characterized in that: The device comprises: A first acquisition module is used to acquire, for a scenario in which an aircraft takes off on a runway, a first takeoff noise area corresponding to a position of the aircraft closest to the ground, and a second takeoff noise area corresponding to a position of the aircraft farthest from the ground, wherein the noise in the first takeoff noise area is greater than or equal to a preset maximum tolerable decibel, and the noise in the second takeoff noise area is greater than or equal to the preset maximum tolerable decibel; A second acquisition module is used to acquire, according to the first takeoff noise area and the second takeoff noise area, a third takeoff noise area corresponding to a first middle position of the aircraft, the first middle position including a position between a position closest to the ground and a position farthest from the ground, and the noise in the third takeoff noise area is greater than or equal to a preset maximum tolerance decibel; A first fusion module is used to fuse the first takeoff noise area, the second takeoff noise area and the third takeoff noise area to obtain a total takeoff noise area of ​​the aircraft; A third acquisition module is used to acquire, for a scenario in which an aircraft lands on a runway, a first landing noise area corresponding to the nearest landing position of the aircraft, and a second landing noise area corresponding to the farthest landing position of the aircraft, wherein the noise in the first landing noise area is greater than or equal to a preset maximum tolerance decibel, and the noise in the second landing noise area is greater than or equal to the preset maximum tolerance decibel; A fourth acquisition module is used to acquire, according to the first landing noise area and the second landing noise area, a third landing noise area corresponding to a second middle position of the aircraft, the second middle position including a position between a nearest landing position and a farthest landing position, and the noise in the third landing noise area is greater than or equal to a preset maximum tolerance decibel; A second fusion module is used to fuse the first landing noise area, the second landing noise area and the third landing noise area to obtain a total landing noise area of ​​the aircraft; The fifth acquisition module is used to acquire the total noise area of ​​the runway according to the total takeoff noise area of ​​the aircraft and / or the total landing noise area of ​​the aircraft.

9. The device according to claim 8, characterized in that The fifth acquisition module comprises: A first determining unit, configured to determine the total takeoff noise area of ​​the aircraft as the total noise area of ​​the flight runway; or, A second determining unit is used to determine the total landing noise area of ​​the aircraft as the total noise area of ​​the flight runway; or, The fusion unit is used to fuse the total takeoff noise area of ​​the aircraft and the total landing noise area of ​​the aircraft to obtain the total noise area of ​​the runway.

10. The device according to claim 8, characterized in that The first acquisition module includes: A third determining unit is used to determine a take-off height corresponding to the aircraft, wherein, when the height of the aircraft during take-off is less than or equal to the take-off height corresponding to the aircraft, there is noise generated by the aircraft on the ground that is greater than a preset maximum tolerance decibel; a fourth determining unit, configured to determine a take-off direction distance corresponding to the aircraft according to a take-off height corresponding to the aircraft, wherein the take-off direction distance corresponding to the aircraft is: a distance between a position of the aircraft on the ground when the aircraft starts to perform a take-off operation and a projection position of the aircraft on the ground when the aircraft reaches the take-off height corresponding to the aircraft; A fifth determining unit is used to determine a vertical distance corresponding to the aircraft, where, during the process of the aircraft performing a take-off operation but not leaving the ground, within a vertical distance corresponding to the aircraft in the vertical direction, the noise generated by the aircraft is greater than or equal to a preset maximum tolerance decibel, where the vertical direction is a horizontal direction, and the vertical direction is perpendicular to the take-off direction; The sixth determining unit is used to determine a first takeoff noise area corresponding to the closest takeoff position of the aircraft according to the takeoff direction distance corresponding to the aircraft and the vertical direction distance corresponding to the aircraft.

11. The device according to claim 10, characterized in that The third determining unit includes: A first determining subunit, used to determine the model of the aircraft; The first search subunit is used to search for the take-off altitude corresponding to the aircraft model and the preset maximum tolerable decibel in the correspondence between the aircraft model, the maximum tolerable decibel and the take-off altitude.

12. The device according to claim 10, characterized in that The fourth determining unit includes: A second determining subunit, used to determine the model of the aircraft; The second search subunit is used to search for the take-off direction distance corresponding to the aircraft model and the take-off height in the correspondence between the aircraft model, the take-off height and the take-off direction distance.

13. The device according to claim 10, characterized in that The fifth determining unit includes: A third determining subunit is used to determine the model of the aircraft; The third search subunit is used to search for the vertical distance corresponding to the aircraft model and the preset maximum tolerance decibel in the corresponding relationship between the aircraft model, the maximum tolerance decibel and the vertical distance.

14. The device according to claim 8, characterized in that The second acquisition module includes: a seventh determining unit, configured to determine, in the first takeoff noise area, a first position and a second position which are farthest from the flight runway; the first position is located on one side of the flight runway, and the second position is located on the other side of the flight runway; an eighth determining unit, configured to determine a third position and a fourth position which are farthest from the runway in the second takeoff noise area; the third position is located on one side of the runway, and the fourth position is located on the other side of the runway; The ninth determining unit is configured to determine an area enclosed by the first position, the second position, the third position, and the fourth position as a third takeoff noise area.

15. An electronic device, characterized in that: include: A processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the method according to any one of claims 1 to 7 when executed by the processor.

16. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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