Airport runway anti-intrusion radar resource management method and system based on resource minimization

Abstract

The present invention relates to the field of radar system management technology, and in particular to a resource management method and system for an airport runway anti-intrusion radar based on resource minimization, the method comprising: extracting a scanning angle according to geographic information of a runway monitoring area; obtaining the total number of beams required for a radar to scan a runway monitoring area; dividing the radar beam scanning area based on a target boundary, extracting a first scanning area and a second scanning area; constructing a power dynamic adjustment model, using the maximum transmission power in the first scanning area, and controlling the transmission power in the second scanning area with the goal of minimizing the transmission power. The purpose is to reduce the power consumption of radars in an airport runway anti-intrusion system.

Description

Technical Field

[0001] The present invention relates to the technical field of radar system management, and in particular to an airport runway anti-intrusion radar resource management method and system based on resource minimization. Background Art

[0002] Radar technology plays a vital role in airport runway intrusion prevention systems. Current implementations typically involve deploying one or more phased array radars at key locations around the runway to achieve real-time monitoring of the runway area. These phased array radars use electronic scanning technology to generate highly directional narrow beams, which can quickly cover a wide monitoring range and provide accurate target positioning information.

[0003] Existing phased array radar monitoring solutions generally adopt full-power transmission mode, that is, a uniform maximum transmission power is used to scan the entire monitoring area. Once a target is detected, the back-end processing system will analyze the acquired data, distinguish and retain moving targets within the predetermined monitoring area, and filter out irrelevant external interference or background noise. Although this method simplifies the operating process and ensures immediate response to all potential threats entering the runway area, the full-power working mode results in a higher average power consumption of the radar system. Continuous operation at maximum power not only increases power consumption, but may also cause equipment overheating and shorten its service life. Summary of the invention

[0004] In order to solve the technical problem of high radar power consumption in the airport runway anti-intrusion system, the purpose of the present invention is to provide an airport runway anti-intrusion radar resource management method and system based on resource minimization. The technical solution adopted is as follows:

[0005] The technical solution of the first aspect of the present invention provides an airport runway anti-intrusion radar resource management method based on resource minimization, the method comprising:

[0006] Extract scanning angles based on geographic information of the runway monitoring area;

[0007] Get the total number of beams required for the radar to scan the runway monitoring area;

[0008] Dividing the radar beam scanning area based on the target boundary to extract a first scanning area and a second scanning area;

[0009] A power dynamic adjustment model is constructed, the maximum transmission power is adopted in the first scanning area, and the transmission power in the second scanning area is controlled with the goal of minimizing the transmission power.

[0010] Furthermore, the total number of beams required to obtain the radar scanning runway monitoring area includes:

[0011] Calculate the transmit beam width of the radar;

[0012] The total number of beams is calculated from the ratio of the transmit beam width to the scan angle using a floor function.

[0013] Further, dividing the radar beam scanning area based on the target boundary, extracting the first scanning area and the second scanning area includes:

[0014] The radar scans the entire runway monitoring area, uses preset boundary conditions to determine whether the beam has reached the target boundary, and sets the area scanned from the initial position to the target boundary as the first scanning area.

[0015] Further, using the preset boundary condition to determine whether the beam reaches the target boundary includes:

[0016] According to the geometric parameters of the monitoring area, the maximum detection distance of the radar is selected as the target boundary, and the angle of the target boundary is calculated using the inverse trigonometric function;

[0017] Calculate the angular offset of the current beam relative to the initial position;

[0018] According to the absolute value of the difference between the current beam angle offset and the target boundary angle, a threshold value is used to determine whether the current radar beam reaches the target boundary.

[0019] Furthermore, the expression of the preset boundary condition is:

[0020]

[0021] In the formula, Indicates the transmit beam width; Indicates the current beam; Indicates the angular offset of the current beam relative to the initial position; Indicates the preset boundary, Indicates the width of the monitoring area. Indicates the length of the monitoring area. Indicates the distance from the radar to the nearest section of the monitoring area; Indicates the angle of the preset boundary; Indicates the threshold value.

[0022] Furthermore, a power dynamic adjustment model is constructed, the maximum transmission power is adopted in the first scanning area, and the transmission power in the second scanning area is controlled with the goal of minimizing the transmission power, including:

[0023] Calculate the detection distance required for the current beam in the second scanning area;

[0024] The minimum power required for the current beam is calculated according to the detection distance, and the minimum power is set as the transmission power of the current beam.

[0025] Furthermore, the expression of the detection distance is:

[0026]

[0027] In the formula, Indicates the detection distance; Indicates the width of the monitoring area; Indicates the angular offset of the current beam relative to the initial position.

[0028] Further, calculating the minimum power required for the current beam according to the detection distance, and setting the minimum power as the transmission power of the current beam includes:

[0029] Obtain relevant parameters of the radar system and construct radar equations;

[0030] According to the detection distance of the current beam, the minimum power is calculated in combination with the radar equation;

[0031] When the radar switches to the next beam, the above steps are repeated to calculate the new detection distance and minimum power.

[0032] Furthermore, the expression for calculating the minimum power is:

[0033]

[0034] In the formula, Indicates minimum power; represents the Boltzmann constant; Indicates room temperature; Indicates radar system loss; Indicates pulse width; represents the transmit antenna gain; represents the receiving antenna gain; Indicates wavelength; Indicates the reflection cross-sectional area of ​​the detection target; Represents the pulse integration gain.

[0035] The technical solution of the second aspect of the present invention provides an airport runway anti-intrusion radar resource management system based on resource minimization, the system comprising:

[0036] a scanning angle extraction module configured to extract a scanning angle based on geographic information of a runway monitoring area;

[0037] A beam calculation module configured to obtain a total number of beams required for the radar to scan a runway monitoring area;

[0038] A region division module, configured to divide the radar beam scanning region based on the target boundary, and extract a first scanning region and a second scanning region;

[0039] The power dynamic adjustment module is configured to construct a power dynamic adjustment model, adopt the maximum transmission power in the first scanning area, and control the transmission power in the second scanning area with the goal of minimizing the transmission power.

[0040] The present invention has the following beneficial effects:

[0041] The present invention is based on the application of airport runway anti-intrusion radar monitoring runway intrusion, and proposes a radar resource management method based on resource minimization rules. By dividing the radar beam scanning area, the maximum transmission power is used in the first scanning area, and the transmission power in the second scanning area is controlled with the goal of minimizing the transmission power. Under the condition of meeting the ranging requirements of all monitoring areas, the working power consumption of the radar can be reduced, thereby reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A method flow chart of an airport runway anti-intrusion radar resource management method based on resource minimization provided by one embodiment of the present invention;

[0044] Figure 2 A schematic diagram of a runway monitoring area provided by an embodiment of the present invention;

[0045] Figure 3 A schematic diagram of a radar beam provided by an embodiment of the present invention;

[0046] Figure 4 A schematic diagram of scanning area division provided by an embodiment of the present invention;

[0047] Figure 5 A schematic structural diagram of an airport runway anti-intrusion radar resource management system based on resource minimization provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0048] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of the airport runway anti-intrusion radar resource management method and system based on resource minimization proposed by the present invention, its specific implementation method, structure, features and effects, in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0049] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0050] The following specifically describes a specific scheme of an airport runway anti-intrusion radar resource management method and system based on resource minimization provided by the present invention in conjunction with the accompanying drawings.

[0051] See also Figure 1 , which shows a method flow chart of an airport runway anti-intrusion radar resource management method based on resource minimization provided by an embodiment of the present invention. The technical solution of the first aspect of the present invention provides an airport runway anti-intrusion radar resource management method based on resource minimization, and the method includes:

[0052] Step S100: Extract the scanning angle according to the geographic information of the runway monitoring area; specifically, collect detailed geographic information about the airport runway and its surrounding environment, including but not limited to the actual size of the runway and the radar installation location. This data can be obtained through on-site measurement, aerial photos or existing airport planning drawings; please refer to Figure 2 , Figure 2 It shows a radar installed near the airport runway, monitoring an M*L runway area, and the distance from the edge of the airport runway is L1 meters; the radar continuously emits electromagnetic waves to monitor the area of ​​interest. The electromagnetic wave emission mode of the phased array radar can be found in Figure 3 The radar continuously transmits cyclic narrow radar beams in the scanning area to scan the entire monitoring area, first transmitting beam 1, then beam 2, until it scans the edge of the monitoring area and then re-transmits beam 1; the form of transmitting narrow beams is one of the characteristics of phased array radars. By synthesizing narrow beams through a large transmitting array, high antenna gain can be achieved, thereby achieving high ranging performance;

[0053] The scanning angle extracted according to the geographic information of the runway monitoring area can be expressed as:

[0054]

[0055] In the formula, Indicates the scanning angle required for the radar to monitor the entire runway monitoring area; Indicates the width of the runway monitoring area; Indicates the distance from the radar position to the edge of the runway; set the scanning range parameters of the radar system by calculating the scanning angle to ensure that the radar can perform effective circular scanning within the set angle range and ensure that the radar can fully cover the entire monitoring area; after completing the above settings, conduct actual tests to check whether the radar can cover the entire runway monitoring area as expected and ensure that there are no blind spots.

[0056] Step S200: obtaining the total number of beams required for the radar to scan the runway monitoring area;

[0057] Step S200 specifically includes:

[0058] Step S210: Calculate the transmit beam width of the radar, which can be expressed as:

[0059]

[0060] In the formula, Indicates the transmit beam width; Indicates the number of radar antennas; 101 represents a preset constant, which is used to express the relationship between the beam width of the phased array radar and the number of antenna units under ideal conditions;

[0061] Step S220: Calculate the total number of beams according to the ratio of the transmit beam width to the scanning angle and using a floor function, the expression is:

[0062]

[0063] In the formula, Indicates the total number of beams; represents the floor function;

[0064] Step S200 achieves effective coverage of the scanning angle by calculating the transmit beam width and the required total number of beams. The total number of beams can be dynamically adjusted according to different geographic information and monitoring requirements, so that the radar system can flexibly respond to various monitoring scenarios and optimize the utilization efficiency of radar resources.

[0065] Step S300: dividing the radar beam scanning area based on the target boundary, extracting the first scanning area and the second scanning area; specifically, the radar scans the entire runway monitoring area, and uses the preset boundary conditions to determine whether the beam reaches the target boundary, and sets the area scanned from the initial position to the target boundary as the first scanning area;

[0066] Step S300 specifically includes:

[0067] Step S310: selecting the maximum detection distance of the radar as the target boundary according to the geometric parameters of the monitoring area, and calculating the angle of the target boundary using an inverse trigonometric function;

[0068] Step S320: Calculate the angle offset of the current beam relative to the initial position;

[0069] Step S330: Based on the absolute value of the difference between the current beam angle offset and the target boundary angle, a threshold value is used to determine whether the current radar beam reaches the target boundary. Figure 4 It can be understood that, with OC as the maximum detection distance of the radar, the radar only needs to adopt the maximum power mode in the triangle OBC area (as the first scanning area). In the triangle OCD area (as the second scanning area), as the radar beam scans from OC to OD, the radar's transmit power is continuously lowered to meet the ranging requirements. In this way, the radar can reduce its average power consumption on the basis of covering the entire monitoring area, thereby achieving the purpose of saving power resources.

[0070] The principle is that the radar starts to continuously transmit monitoring beams to the monitoring area, scanning the monitoring area back and forth, and the number of beams traversed in a single time is , when the radar beam moves from the vector Scan to Vector During this time, the radar uses the factory default transmission power. Scan to Vector The power used by each transmitting beam should be based on the maximum detection distance currently required. Calculate, that is, calculate the minimum power required for the radar's current beam ;

[0071] The expression of the preset boundary condition is:

[0072]

[0073] In the formula, Indicates the transmit beam width; Indicates the current beam; Indicates the angular offset of the current beam relative to the initial position; Indicates the preset boundary, Indicates the width of the monitoring area. Indicates the length of the monitoring area. Indicates the distance from the radar to the nearest section of the monitoring area; Indicates the angle of the preset boundary; Indicates the threshold value; since the radar beam width depends on the size of the antenna array, it cannot be guaranteed that the alignment vector will be achieved after an integer multiple of the scanning interval The direction may be to the right or to the left. When one of the radar beams intersects with the vector The deviation of the direction is greater than When the next radar beam is aligned with the vector The deviation of the pointing direction must be less than (Each time the beam is fixed and moved ), so choose As a threshold, it can ensure that the radar's current beam pointing and vector If the absolute value of the difference between the angle offset of the current beam and the target boundary angle is less than or equal to , it is considered that the current beam is in the first scanning area; otherwise, it means that it has entered the second scanning area. This mechanism allows the working mode to be correctly switched even when the beam cannot be accurately aligned with the target boundary in actual operation.

[0074] Step S400: construct a power dynamic adjustment model, use the maximum transmission power in the first scanning area, and control the transmission power in the second scanning area with the goal of minimizing the transmission power.

[0075] Step S400 specifically includes:

[0076] Step S410: Calculate the detection distance required by the current beam in the second scanning area; the expression of the detection distance is:

[0077]

[0078] In the formula, Indicates the detection distance; Indicates the width of the monitoring area; Indicates the angular offset of the current beam relative to the initial position;

[0079] Step S420: calculating the minimum power required for the current beam according to the detection distance, and setting the minimum power as the transmission power of the current beam includes:

[0080] Obtain relevant parameters of the radar system and construct radar equations; specifically, relevant parameters of the radar system include but are not limited to: Boltzmann constant, which is used to describe the relationship between temperature and energy; room temperature, which refers to ambient temperature and is usually measured under standard conditions (such as laboratory or atmospheric conditions); system loss, including various losses in the transmission process of radar signals, such as antenna feeder loss, internal loss of the receiver, etc., which can be determined through actual tests or data sheets provided by manufacturers; pulse width, which refers to the duration of a single pulse emitted by the radar and is a fixed value determined when the radar is designed; transmitting antenna gain, which indicates the ability of the antenna to concentrate radiated energy in a specific direction; receiving antenna gain, which indicates the ability of the antenna to collect signals in a specific direction; wavelength, which refers to the propagation distance of electromagnetic waves in a complete cycle, which can be calculated based on the operating frequency of the radar; detecting the reflection cross-sectional area of ​​the target, which indicates the target's ability to reflect radar signals and depends on the shape, size and material of the target. For known target types, their typical reflection cross-sectional areas can be found in literature or databases, and for unknown targets, they can be estimated through experiments or simulations; pulse accumulation gain, which refers to the gain of improving the signal-to-noise ratio through Doppler processing or multi-pulse accumulation technology, which can be determined through performance analysis of radar signal processing algorithms;

[0081] According to the detection distance of the current beam, the minimum power is calculated in combination with the radar equation; the expression for calculating the minimum power is:

[0082]

[0083] In the formula, Indicates minimum power; represents the Boltzmann constant; Indicates room temperature; Indicates radar system loss; Indicates pulse width; represents the transmit antenna gain; represents the receiving antenna gain; Indicates wavelength; Indicates the reflection cross-sectional area of ​​the detection target; represents the pulse accumulation gain;

[0084] When the radar switches to the next beam, the above steps are repeated to calculate the new detection distance and minimum power. Step S400 performs precise energy management on the radar beam in the second scanning area, greatly reducing the average power consumption of the radar system without affecting the detection performance. This refined power control helps to extend the life of the equipment and reduce maintenance costs; while meeting the ranging requirements of all monitoring areas, the radar's operating power consumption can be reduced, thereby reducing energy consumption.

[0085] See also Figure 5, which shows a schematic diagram of the structure of an airport runway anti-intrusion radar resource management system based on resource minimization provided by an embodiment of the present invention. The technical solution of the second aspect of the present invention provides an airport runway anti-intrusion radar resource management system based on resource minimization, and the system includes:

[0086] a scanning angle extraction module configured to extract a scanning angle based on geographic information of a runway monitoring area;

[0087] A beam calculation module configured to obtain a total number of beams required for the radar to scan a runway monitoring area;

[0088] A region division module, configured to divide the radar beam scanning region based on the target boundary, and extract a first scanning region and a second scanning region;

[0089] The power dynamic adjustment module is configured to construct a power dynamic adjustment model, adopt the maximum transmission power in the first scanning area, and control the transmission power in the second scanning area with the goal of minimizing the transmission power.

[0090] It should be noted that the sequence of the above embodiments of the present invention is only for description and does not represent the advantages and disadvantages of the embodiments. The processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0091] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

Claims

1. The airport runway anti-intrusion radar resource management method based on resource minimization is characterized by: The method comprises: Extract scanning angles based on geographic information of the runway monitoring area; Get the total number of beams required for the radar to scan the runway monitoring area; Dividing the radar beam scanning area based on the target boundary to extract a first scanning area and a second scanning area; A power dynamic adjustment model is constructed, the maximum transmission power is adopted in the first scanning area, and the transmission power in the second scanning area is controlled with the goal of minimizing the transmission power.

2. The resource management method according to claim 1, characterized in that: The total number of beams required to obtain a radar scan of the runway surveillance area includes: Calculate the transmit beam width of the radar; The total number of beams is calculated from the ratio of the transmit beam width to the scan angle using a floor function.

3. The resource management method according to claim 1, characterized in that: Dividing the radar beam scanning area based on the target boundary, extracting the first scanning area and the second scanning area includes: The radar scans the entire runway monitoring area, uses preset boundary conditions to determine whether the beam has reached the target boundary, and sets the area scanned from the initial position to the target boundary as the first scanning area.

4. The resource management method according to claim 3, characterized in that: Using preset boundary conditions to determine whether the beam reaches the target boundary includes: According to the geometric parameters of the monitoring area, the maximum detection distance of the radar is selected as the target boundary, and the angle of the target boundary is calculated using the inverse trigonometric function; Calculate the angular offset of the current beam relative to the initial position; According to the absolute value of the difference between the current beam angle offset and the target boundary angle, a threshold value is used to determine whether the current radar beam reaches the target boundary.

5. The resource management method according to claim 4, characterized in that: The expression of the preset boundary condition is: In the formula, Indicates the transmit beam width; Indicates the current beam; Indicates the angular offset of the current beam relative to the initial position; Indicates the preset boundary, Indicates the width of the monitoring area. Indicates the length of the monitoring area. Indicates the distance from the radar to the nearest section of the monitoring area; Indicates the angle of the preset boundary; Indicates the threshold value.

6. The resource management method according to any one of claims 1 to 5, characterized in that: Constructing a power dynamic adjustment model, using the maximum transmit power in the first scanning area, and controlling the transmit power in the second scanning area with the goal of minimizing the transmit power includes: Calculate the detection distance required for the current beam in the second scanning area; The minimum power required for the current beam is calculated according to the detection distance, and the minimum power is set as the transmission power of the current beam.

7. The resource management method according to claim 6, characterized in that: The expression of detection distance is: In the formula, Indicates the detection distance; Indicates the width of the monitoring area; Indicates the angular offset of the current beam relative to the initial position.

8. The resource management method according to claim 7, characterized in that: Calculate the minimum power required for the current beam based on the detection distance, and set the minimum power as the transmit power of the current beam including: Obtain relevant parameters of the radar system and construct radar equations; According to the detection distance of the current beam, the minimum power is calculated in combination with the radar equation; When the radar switches to the next beam, the above steps are repeated to calculate the new detection distance and minimum power.

9. The resource management method according to claim 8, characterized in that: The expression for calculating the minimum power is: In the formula, Indicates minimum power; represents the Boltzmann constant; Indicates room temperature; Indicates radar system loss; Indicates pulse width; represents the transmit antenna gain; represents the receiving antenna gain; Indicates wavelength; Indicates the reflection cross-sectional area of ​​the detection target; Represents the pulse integration gain.

10. The airport runway anti-intrusion radar resource management system based on resource minimization is characterized by: The system comprises: a scanning angle extraction module configured to extract a scanning angle based on geographic information of a runway monitoring area; A beam calculation module configured to obtain a total number of beams required for the radar to scan a runway monitoring area; A region division module, configured to divide the radar beam scanning region based on the target boundary, and extract a first scanning region and a second scanning region; The power dynamic adjustment module is configured to construct a power dynamic adjustment model, adopt the maximum transmission power in the first scanning area, and control the transmission power in the second scanning area with the goal of minimizing the transmission power.

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