A cloud base height monitoring system and method combining radar ranging and ADS-B equipment

Abstract

The present invention discloses a cloud base height monitoring system and method combining radar ranging and ADS‑B equipment, including an airport, a camera radar ranging system and a cloud base height calculation system connected to the camera radar ranging system in communication, a runway is provided on the airport, a compass is provided at the landing end of the runway, the airport has an inclined glide slope in the landing direction of the runway, the camera radar ranging system includes a camera acquisition module and a radar ranging module, the camera acquisition module and the radar ranging module are respectively adjustable in shooting angle and movably installed on the top of the compass; the cloud base height calculation system includes a graphic recognition module, a ranging cloud base height calculation module and an aircraft height communication acquisition module, and the graphic recognition module has a cloud aircraft recognition model inside. The present invention can not only scientifically calculate the estimated value of cloud base height for risk control, but also rely on the height value of the aircraft to obtain the actual value of cloud base height, thereby improving the monitoring accuracy of cloud base height and the level of airport safety management.

Description

Technical Field

[0001] The present invention relates to the field of airport safety management, and in particular to a cloud base height monitoring system and method combining radar ranging and ADS-B equipment. Background Art

[0002] Cloud base height refers to the vertical distance between the cloud base and the airport elevation. According to the "Formulation and Implementation of Minimum Standards for Aircraft Airport Operations" formulated by the Civil Aviation Administration, the basic takeoff or landing standards for civil airports require a cloud base height of no less than 100 meters for a single-engine aircraft. If the flight procedure requires visual avoidance of obstacles, the cloud base height is required to be at least 60 meters higher than the controlled obstacles. Some airports will reflect specific requirements for cloud base height in the published aeronautical charts. For example, when taking off from a certain runway, if the climb gradient is less than 4%, the cloud base height is required to be above 300 meters to execute the instrument departure procedure. In summary, cloud base height is one of the data parameters that must be monitored for civil aviation airport operations, and the accuracy of this parameter will affect the airport's flight release.

[0003] The traditional cloud base height detection method in the civil aviation field is mainly based on manual visual inspection, that is, by observing the appearance characteristics of low clouds, judging the cloud shape, and classifying the cloud shape in detail, which can be mainly divided into cumulus clouds, cumulonimbus clouds, fractus clouds, nimbostratus clouds, etc., determining the cloud height range according to the cloud shape category, and then further estimating the cloud base height according to the size of the cloud blocks, movement speed, etc.; when the cloud layer approaches or contacts the observation point, the cloud height is inferred based on the height of the reference object and the relative height of the cloud base from the reference object; the accuracy of this method is greatly affected by human factors, and considerable experience needs to be accumulated to accurately draw conclusions. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a cloud base height monitoring system and method combining radar ranging and ADS-B equipment. The combination of the camera acquisition module and the graphic recognition module of the camera radar ranging system can monitor the lower slide area, identify clouds and continuously monitor them as targets, and then perform cloud ranging through the radar ranging module and calculate the cloud base height estimated value according to the ranging angle and feed it back to the airport management party; and the present invention continues to shoot and monitor the cloud target object, and identifies the aircraft features in the cloud target object of the graphic recognition module, then determines that the aircraft is passing through the clouds, and then the aircraft altitude communication acquisition module of the cloud base height calculation system collects the altitude data of the aircraft at this moment and uses it as the actual value of the cloud base height, and outputs the actual value of the cloud base height to the airport management party accordingly; the present invention can not only scientifically calculate the estimated value of the cloud base height for risk control, but also rely on the altitude value of the aircraft to obtain the actual value of the cloud base height, thereby improving the monitoring accuracy of the cloud base height and also improving the level of airport safety management.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A cloud base height monitoring system combining radar ranging and ADS-B equipment comprises an airport, a camera radar ranging system and a cloud base height calculation system connected to the camera radar ranging system in communication. A runway is provided on the airport, and a localizer is provided at the landing end of the runway. The camera radar ranging system comprises a camera acquisition module and a radar ranging module, and the camera acquisition module and the radar ranging module are respectively movably installed on the top of the localizer with adjustable shooting angles; the cloud base height calculation system comprises a graphic recognition module, a ranging cloud base height calculation module and an aircraft height communication acquisition module, and the camera acquisition module is used to monitor the runway. The sky in the landing direction is used to monitor and shoot the target and transmit the captured target image and shooting angle to the cloud base height calculation system. The graphic recognition module has a cloud and aircraft recognition model inside. The graphic recognition module recognizes cloud features and aircraft features of the target image and feeds back the recognition result to the camera radar ranging system. The radar ranging module is used to perform radar ranging on the target. The ranging cloud base height calculation module is used to calculate the cloud base height according to the radar ranging result of the radar ranging module and the ranging angle of the radar ranging module. The aircraft altitude communication and collection module is used to communicate and collect aircraft altitude data.

[0007] In order to better realize the cloud base height monitoring system of the present invention, the cloud base height monitoring system of the present invention also includes an ADS-B device, and the aircraft altitude communication collection module is communicatively connected to the ADS-B device.

[0008] A cloud base height monitoring method combining radar ranging and ADS-B equipment includes an airport, a camera radar ranging system and a cloud base height calculation system connected to the camera radar ranging system in communication, wherein a runway is provided at the airport, a localizer is provided at the landing end of the runway, and the airport has an inclined glide slope in the landing direction of the runway, the camera radar ranging system includes a camera acquisition module and a radar ranging module, and the camera acquisition module and the radar ranging module are respectively movably installed on the top of the localizer with adjustable shooting angles; the cloud base height calculation system includes a graphic recognition module, a ranging cloud base height calculation module and an aircraft height communication acquisition module, and the graphic recognition module has a cloud aircraft recognition model inside; the method is as follows:

[0009] A. The camera acquisition module monitors and shoots the target in the sky in the direction of the lower slide platform and transmits the captured target image and the shooting angle of the camera acquisition module to the cloud base height calculation system. The graphic recognition module of the cloud base height calculation system performs feature recognition on whether there are clouds in the target image based on the cloud aircraft recognition model;

[0010] If the pattern recognition module does not recognize cloud features in the target image, the camera acquisition module continues to monitor and shoot; if the pattern recognition module recognizes cloud features in the target image, the target image is determined to be a cloud target and the process goes to step B;

[0011] B. The cloud base height calculation system will feed back the cloud feature identification results and shooting angle to the camera radar ranging system. The camera radar ranging system will control the radar ranging module to perform radar ranging on the cloud target according to the shooting angle as the ranging angle. The ranging cloud base height calculation module will calculate the height of the cloud target according to the ranging angle of the cloud target and the radar ranging result and use it as the estimated cloud base height value. The estimated cloud base height value will be output to the airport management accordingly.

[0012] C. The camera acquisition module continues to monitor and shoot the cloud target in step B and transmits the cloud target image and shooting angle to the cloud base height calculation system. The graphic recognition module of the cloud base height calculation system identifies whether the cloud target contains aircraft features based on the cloud aircraft recognition model;

[0013] If the pattern recognition module does not recognize the aircraft features in the cloud target, the camera acquisition module continues to monitor and shoot the cloud target; if the pattern recognition module recognizes the aircraft features in the cloud target, it is determined that the aircraft is passing through the cloud and then enters step D;

[0014] D. The aircraft altitude communication acquisition module of the cloud base height calculation system collects the aircraft altitude data at this moment and uses it as the actual value of the cloud base height, and outputs the actual value of the cloud base height to the airport management.

[0015] In order to better implement the cloud base height monitoring method of the present invention, the preferred camera radar ranging system of the present invention controls the shooting angle of the camera acquisition module to be the same as the ranging angle of the radar ranging module.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0017] The camera acquisition module and the graphic recognition module combination of the camera radar ranging system of the present invention can monitor the lower slide area, identify clouds and continuously monitor them as targets, then perform cloud ranging through the radar ranging module and calculate the cloud base height estimated value according to the ranging angle and feed it back to the airport management party; and the present invention continues to shoot and monitor the cloud target object, and identifies the aircraft features in the cloud target object of the graphic recognition module, then determines that the aircraft is passing through the clouds, and then the aircraft height communication acquisition module of the cloud base height calculation system collects the altitude data of the aircraft at this moment and uses it as the actual value of the cloud base height, and outputs the actual value of the cloud base height to the airport management party accordingly; the present invention can not only scientifically calculate the estimated value of the cloud base height for risk management and control, but also rely on the altitude value of the aircraft to obtain the actual value of the cloud base height, thereby improving the monitoring accuracy of the cloud base height and also improving the level of airport safety management. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a principle structure block diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the aircraft's gliding ramp;

[0020] Figure 3 A schematic diagram of clouds appearing near the slide in the embodiment;

[0021] Figure 4 This is a schematic diagram of an airplane passing through clouds near the lower glide path in an embodiment.

[0022] The names corresponding to the reference numerals in the accompanying drawings are:

[0023] 1-Camera radar ranging system, 2-Camera acquisition module, 3-Radar ranging module, 4-Localizer, 5-Runway, 6-Glide slope, 7-Clouds, 8-Aircraft, 9-Cloud base height calculation system, 10-Graphic recognition module, 11-Range measurement cloud base height calculation module, 12-Aircraft altitude communication acquisition module. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with embodiments:

[0025] Example

[0026] like Figure 1 As shown, a cloud base height monitoring system combining radar ranging and ADS-B equipment includes an airport, a camera radar ranging system 1 and a cloud base height calculation system 9 which is communicatively connected to the camera radar ranging system 1. A runway 5 is provided at the airport, and a localizer 4 is provided at the landing end of the runway 5. The camera radar ranging system 1 includes a camera acquisition module 2 and a radar ranging module 3. The camera acquisition module 2 and the radar ranging module 3 are movably installed on the top of the localizer 4 with adjustable shooting angles. The cloud bottom height calculation system 9 includes a graphic recognition module 10, a ranging cloud bottom height calculation module 11 and an aircraft height communication acquisition module 12. The camera acquisition module 2 is used to monitor and shoot the sky in the landing direction of the runway 5 and transmit the captured target image and the shooting angle to the cloud bottom height calculation system 9. The graphic recognition module 10 has a cloud and aircraft recognition model inside. The graphic recognition module 10 recognizes cloud features and aircraft features of the target image and feeds back the recognition results to the camera radar ranging system 1. The radar ranging module 3 is used to perform radar ranging on the target. The ranging cloud bottom height calculation module 11 is used to calculate the cloud bottom height according to the radar ranging result of the radar ranging module 3 and the ranging angle of the radar ranging module 3. The aircraft height communication acquisition module 12 is used to communicate and collect aircraft height data.

[0027] The present invention also includes an ADS-B device, which can collect altitude data of a landing aircraft, and the aircraft altitude communication acquisition module 12 is communicatively connected with the ADS-B device.

[0028] A cloud base height monitoring method combining radar ranging and ADS-B equipment includes an airport, a camera radar ranging system 1, and a cloud base height calculation system 9 connected to the camera radar ranging system 1 in communication. The airport is provided with a runway 5, a localizer 4 is provided at the landing end of the runway 5, and the airport has an inclined glide path 6 (such as a ramp) in the landing direction of the runway 5. Figure 2 As shown, the glide platform 6 is a reference plane for the aircraft to take off or land), the camera radar ranging system 1 includes a camera acquisition module 2 and a radar ranging module 3, and the camera acquisition module 2 and the radar ranging module 3 are respectively adjustable in shooting angle and are movably installed on the top of the heading platform 4. The cloud base height calculation system 9 includes a graphic recognition module 10, a ranging cloud base height calculation module 11 and an aircraft height communication acquisition module 12, and the graphic recognition module 10 has a cloud aircraft recognition model inside. According to a preferred embodiment of the present invention, the camera radar ranging system 1 of the present invention controls the shooting angle of the camera acquisition module 2 to be the same as the ranging angle of the radar ranging module 3, that is, the shooting angle of the camera acquisition module 2 in the camera radar ranging system 1 is kept synchronously and at the same angle as the ranging angle of the radar ranging module 3. Of course, the present invention can set multiple groups of camera radar ranging systems 1 at the top of the heading platform 4, and the shooting angle of the camera acquisition module 2 in each group of camera radar ranging systems 1 is kept synchronously and at the same angle as the ranging angle of the radar ranging module 3, so that the monitoring operation of multiple clouds near the glide platform 6 area can be realized.

[0029] The cloud base height monitoring method of the present invention is as follows:

[0030] A. The camera acquisition module 2 monitors and shoots the target object in the sky in the direction of the lower slide platform 6 and transmits the captured target object image and the shooting angle of the camera acquisition module 2 to the cloud base height calculation system 9. The graphic recognition module 10 of the cloud base height calculation system 9 performs feature recognition on whether there are clouds in the target object image based on the cloud aircraft recognition model.

[0031] If the pattern recognition module 10 does not recognize cloud features in the target image, the camera acquisition module 2 continues to monitor and shoot. Figure 3 As shown, the pattern recognition module 10 recognizes cloud features in the target image, and determines that the target image in the vicinity of the lower slide 6 is a cloud 7), then determines that the target image is a cloud target and enters step B.

[0032] B. The cloud base height calculation system 9 feeds back the cloud feature identification result and the shooting angle to the camera radar ranging system 1. The camera radar ranging system 1 controls the radar ranging module 3 to perform radar ranging on the cloud target according to the shooting angle as the ranging angle. The ranging cloud base height calculation module 11 calculates the height of the cloud target according to the ranging angle of the cloud target and the radar ranging result and uses it as the cloud base height estimated value. If the ranging angle is a and the distance result of the radar ranging is L, then the vertical height of the cloud 7 from the top of the localizer 4 is H1=sin(a)*L. It is known that the localizer 4 is H2, then the cloud base height estimated value H=H1+H2, and the cloud base height estimated value is output to the airport management accordingly.

[0033] C. The camera acquisition module 2 continues to monitor and shoot the cloud target in step B and transmits the cloud target image and the shooting angle to the cloud base height calculation system 9. The graphic recognition module 10 of the cloud base height calculation system 9 identifies whether the cloud target contains aircraft features based on the cloud aircraft recognition model.

[0034] If the pattern recognition module 10 does not recognize the aircraft features in the cloud target, the camera acquisition module 2 continues to monitor and shoot the cloud target. Figure 4 As shown, the graphic recognition module 10 recognizes the aircraft feature in the cloud target, and determines that the target image in the area near the lower slide 6 has clouds 7 and an aircraft 8 is passing through the clouds 7), then determines that the aircraft is passing through the clouds and immediately enters step D.

[0035] D. The aircraft altitude communication acquisition module 12 of the cloud base height calculation system 9 collects the altitude data of the aircraft at this moment and uses it as the actual value of the cloud base height, and outputs the actual value of the cloud base height to the airport management accordingly.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cloud base height monitoring system combining radar ranging and ADS-B equipment, comprising an airport, a runway (5) is provided on the airport, a localizer (4) is provided at the landing end of the runway (5), and the system is characterized in that: The invention also comprises an ADS-B device, a camera radar ranging system (1) and a cloud base height calculation system (9) which is communicatively connected to the camera radar ranging system (1). The camera radar ranging system (1) comprises a camera acquisition module (2) and a radar ranging module (3). The camera acquisition module (2) and the radar ranging module (3) are movably mounted on the top of a heading platform (4) with adjustable shooting angles. The cloud base height calculation system (9) comprises a graphic recognition module (10), a ranging cloud base height calculation module (11) and an aircraft altitude communication acquisition module (12). The camera acquisition module (2) is used to monitor and photograph targets in the sky in the landing direction of the runway (5) and to transmit the photographed target images and The shooting angle is transmitted to a cloud base height calculation system (9); the graphic recognition module (10) has a cloud and aircraft recognition model inside; the graphic recognition module (10) recognizes cloud features and aircraft features on the target object image and feeds back the recognition result to the camera radar ranging system (1); the radar ranging module (3) is used to perform radar ranging on the target object; the ranging cloud base height calculation module (11) is used to calculate the cloud base height according to the radar ranging result of the radar ranging module (3) and the ranging angle of the radar ranging module (3); the aircraft altitude communication acquisition module (12) is used to communicate and collect aircraft altitude data; the aircraft altitude communication acquisition module (12) is connected to the ADS-B device for communication.

2. A cloud base height monitoring method combining radar ranging and ADS-B equipment, comprising an airport, a runway (5) is provided on the airport, a localizer (4) is provided at the landing end of the runway (5), and the airport has an inclined glide path (6) in the landing direction of the runway (5), characterized in that: The invention comprises a camera radar ranging system (1) and a cloud base height calculation system (9) which is communicatively connected to the camera radar ranging system (1), wherein the camera radar ranging system (1) comprises a camera acquisition module (2) and a radar ranging module (3), wherein the camera acquisition module (2) and the radar ranging module (3) are movably mounted on the top of a heading platform (4) with adjustable shooting angles respectively; the cloud base height calculation system (9) comprises a graphic recognition module (10), a ranging cloud base height calculation module (11) and an aircraft altitude communication acquisition module (12), wherein the graphic recognition module (10) has a cloud and aircraft recognition model inside; and the method is as follows: A. The camera acquisition module (2) monitors and photographs the target object in the sky in the direction of the lower slide platform (6) and transmits the photographed target object image and the shooting angle of the camera acquisition module (2) to the cloud base height calculation system (9). The graphic recognition module (10) of the cloud base height calculation system (9) performs feature recognition on whether there are clouds in the target object image based on a cloud aircraft recognition model; If the graphic recognition module (10) does not recognize cloud features in the target object image, the camera acquisition module (2) continues to monitor and shoot; if the graphic recognition module (10) recognizes cloud features in the target object image, the target object image is determined to be a cloud target and the process proceeds to step B; B. The cloud base height calculation system (9) feeds back the cloud feature recognition result and the shooting angle to the camera radar ranging system (1). The camera radar ranging system (1) controls the radar ranging module (3) to perform radar ranging on the cloud target according to the shooting angle as the ranging angle. The ranging cloud base height calculation module (11) calculates the height of the cloud target according to the ranging angle of the cloud target and the radar ranging result and uses it as the cloud base height estimation value. The cloud base height estimation value is output to the airport management party accordingly. C. The camera acquisition module (2) continues to monitor and photograph the cloud target object in step B and transmits the cloud target object image and the shooting angle to the cloud base height calculation system (9). The pattern recognition module (10) of the cloud base height calculation system (9) identifies whether the cloud target object contains aircraft features based on the cloud aircraft recognition model; If the pattern recognition module (10) does not recognize the features of the aircraft in the cloud target, the camera acquisition module (2) continues to monitor and photograph the cloud target; if the pattern recognition module (10) recognizes the features of the aircraft in the cloud target, it is determined that the aircraft is passing through the cloud and then proceeds to step D; D. The aircraft altitude communication acquisition module (12) of the cloud base height calculation system (9) collects the aircraft altitude data at this moment and uses it as the actual cloud base height value, and outputs the corresponding actual cloud base height value to the airport management party.

3. A cloud base height monitoring method combining radar ranging and ADS-B equipment according to claim 2, characterized in that: The camera radar ranging system (1) controls the shooting angle of the camera acquisition module (2) to be the same as the ranging angle of the radar ranging module (3).

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