A radar penetration beam configuration method and system for a drone

Abstract

The present application relates to a kind of radar sounding beam configuration method and system for unmanned aerial vehicle, its method includes, obtaining the intelligence data or prior information of target unmanned aerial vehicle;According to the typical working mode information of target unmanned aerial vehicle analyzed from intelligence data or prior information, and extract the flight height parameter and working radius parameter of target unmanned aerial vehicle from the typical working mode information of target unmanned aerial vehicle;Obtain radar parameter, and according to radar parameter, flight height parameter and working radius parameter control radar to generate multiple sounding beams with same coverage area.The special beam generated by the present application improves the utilization rate of intelligence data and prior information compared with traditional uniform beam, has complete closed expression, is simple and effective;At the same time, the effective utilization rate of each beam is balanced, which can effectively reduce the beam scheduling loss in radar exploration process;In addition, it also improves the antenna gain and average antenna gain of each beam, enhances the radar sounding performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of radar detection, in particular to a radar detection beam configuration method and system for unmanned aerial vehicles. BACKGROUND

[0002] In recent years, with the rapid development of unmanned aerial vehicles and unmanned aerial vehicle cluster technology, unmanned aerial vehicles have been widely used in various civil and military fields due to their small size, low price, easy control and zero casualties, and have produced many typical and mature unmanned aerial vehicle models in different fields. In order to effectively detect and warn non-cooperative (enemy) unmanned aerial vehicles entering prohibited airspace and identify and control cooperative (our) unmanned aerial vehicles, it is necessary to detect and communicate with unmanned aerial vehicles.

[0003] In the radar detection scene of detecting non-cooperative unmanned aerial vehicles and communicating with cooperative unmanned aerial vehicles using radar, the configuration of radar detection beams can significantly affect the detection efficiency and performance. The traditional radar detection beam is configured as a uniform beam in the elevation dimension, that is, the radar uniformly traverses from low to high elevation angles or vice versa. Although this method is simple and easy to implement, it cannot fully utilize intelligence data and prior information when performing some specific detection tasks, resulting in waste of system performance and reduction of radar detection efficiency and performance. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a radar detection beam configuration method and system for unmanned aerial vehicles, which improves the utilization of intelligence data and prior information and improves the detection efficiency and performance of radar for unmanned aerial vehicles with typical working modes.

[0005] The technical solution of the present application to solve the above technical problem is as follows: a radar detection beam configuration method for unmanned aerial vehicles, comprising the following steps,

[0006] S1, obtaining intelligence data or prior information of a target unmanned aerial vehicle;

[0007] S2, analyzing the typical working mode information of the target unmanned aerial vehicle according to the intelligence data or prior information of the target unmanned aerial vehicle, and extracting the flight height parameter and the working radius parameter of the target unmanned aerial vehicle from the typical working mode information of the target unmanned aerial vehicle;

[0008] S3, obtaining radar parameters, and controlling the radar to generate a plurality of detection beams with the same coverage area according to the radar parameters, the flight height parameter and the working radius parameter.

[0009] On the basis of the above technical solution, the present application can also be improved as follows.

[0010] Further, the flight height parameter comprises a highest flight height parameter and a lowest flight height parameter; and the radar parameter comprises a radar station height parameter and a total number of sounding beams.

[0011] Further, the total number of sounding beams is defined as N, and the beam number i is defined from 1 to N, corresponding to N sounding beams with the elevation angle from low to high; in the S3, the coverage area of each sounding beam is realized by controlling the pointing angle of each sounding beam.

[0012] When , the pointing angle of the sounding beam is

[0013]

[0014] When , the pointing angle of the sounding beam is

[0015]

[0016] wherein, is the pointing angle of the sounding beam with the beam number i, h0 is the radar station height parameter, h1 is the lowest flight height parameter, h2 is the highest flight height parameter, and r is the working radius parameter.

[0017] Further, the S1 is specifically,

[0018] The model of the target UAV is identified, and corresponding intelligence data is read in the database according to the model of the target UAV; or, the target UAV is pre-continuously tracked through a plurality of sensing devices, the flight state of the target UAV is summarized, and prior information of the target UAV is obtained from the flight state of the target UAV.

[0019] Further, in the S2, the typical working mode information comprises a working radius parameter, a endurance time parameter, a flight speed parameter, a flight height parameter and an aircraft size parameter; wherein, the flight height parameter comprises a highest flight height parameter and a lowest flight height parameter.

[0020] Based on the above-mentioned radar sounding beam configuration method for a UAV, the present application further provides a radar sounding beam configuration system for a UAV.

[0021] A radar sounding beam configuration system for a UAV, comprising the following modules,

[0022] A basic data information acquisition module for acquiring intelligence data or prior information of a target UAV;

[0023] The altitude and radius parameter extraction module is used to analyze the typical working mode information of the target UAV based on the intelligence data or prior information of the target UAV, and extract the flight altitude parameter and working radius parameter of the target UAV from the typical working mode information of the target UAV.

[0024] A dedicated probe beam generation module is used to acquire radar parameters and control the radar to generate multiple probe beams with the same coverage area based on the radar parameters, the flight altitude parameters, and the working radius parameters.

[0025] Based on the above technical solution, the present invention can be further improved as follows.

[0026] Furthermore, the flight altitude parameters include the highest flight altitude parameters and the lowest flight altitude parameters; the radar parameters include the radar deployment altitude parameters and the total number of detection beams.

[0027] Furthermore, let the total number of the probe beams be N, and define the beam number i from 1 to N, corresponding to the N probe beams with elevation angles from low to high;

[0028] In the dedicated probe beam generation module, the coverage area of ​​each probe beam is made the same by controlling the pointing angle of each probe beam.

[0029] when At that time, the pointing angle of the probe beam is,

[0030]

[0031] when At that time, the pointing angle of the probe beam is,

[0032]

[0033] in, h0 is the pointing angle of the probe beam with beam number i, h1 is the minimum flight altitude parameter, h2 is the maximum flight altitude parameter, and r is the working radius parameter.

[0034] Furthermore, the basic data information acquisition module is specifically used for,

[0035] The model of the target drone is identified, and the corresponding intelligence data is read from the database based on the model of the target drone; or, the target drone is continuously tracked in advance through multiple sensors, the flight status of the target drone is summarized, and the prior information of the target drone is obtained from the flight status of the target drone.

[0036] Further, in the height-radius parameter extraction module, the typical working mode information includes a working radius parameter, a endurance time parameter, a flight speed parameter, a flight height parameter and an aircraft size parameter; wherein the flight height parameter includes a maximum flight height parameter and a minimum flight height parameter.

[0037] The present application has the advantages that: the special beam generated by the radar probing beam configuration method and system for unmanned aerial vehicles improves the utilization rate of intelligence data and prior information compared with the traditional uniform beam, has a complete closed expression, is simple and effective, balances the effective utilization rate (effective coverage area) of each beam, can effectively reduce the beam scheduling loss in the radar probing process, and improves the antenna gain and average antenna gain of each beam, and enhances the radar probing performance. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 A flowchart of the radar probing beam configuration method for unmanned aerial vehicles according to the present application;

[0039] Figure 2 A radar probing scene diagram for unmanned aerial vehicles with typical working modes;

[0040] Figure 3 A radar probing diagram for unmanned aerial vehicles using different beams;

[0041] Figure 4 A radar probing beam simulation diagram generated by different methods;

[0042] Figure 5 A structure block diagram of the radar probing beam configuration system for unmanned aerial vehicles according to the present application. DETAILED DESCRIPTION

[0043] The principles and characteristics of the present application are described below in conjunction with the accompanying drawings, and the examples are only used to explain the present application and are not used to limit the scope of the present application.

[0044] The specific probing task refers to the detection scanning of unmanned aerial vehicles with typical working modes. Thanks to the improvement of strategic capabilities such as intelligence networks and combat scheduling centers, the probing tasks that the radar needs to perform often have certain intelligence information support, i.e. the typical working mode of the target unmanned aerial vehicle. First, the type of the target unmanned aerial vehicle is identified in advance through intelligence data analysis, and the typical working mode of the target unmanned aerial vehicle is read in the database; second, the target unmanned aerial vehicle is continuously tracked by multiple sensing devices, the typical working mode is summarized to form prior information, and the combat scheduling center transmits the prior information of the target unmanned aerial vehicle to the radar.

[0045] In the case of mastering the typical working mode of the target UAV, the working mode information can be fully utilized to improve the penetration efficiency of the target UAV and improve the radar performance. The typical working mode parameters include but are not limited to: working radius parameter, endurance time parameter, flight speed parameter, flight height parameter, aircraft size parameter, etc. In the method of the present application, the typical flight height parameter and the working radius parameter of the target UAV are mainly used.

[0046] As shown in Figure 1 A radar penetration beam configuration method for a UAV, comprising the following steps S1-S3:

[0047] S1, obtaining intelligence data or prior information of the target UAV;

[0048] Specifically, the type of the target UAV is identified, and corresponding intelligence data is read from the database according to the type of the target UAV; or, the target UAV is continuously tracked in advance by a multi-sensor device, the flight state of the target UAV is summarized, and the prior information of the target UAV is obtained from the flight state of the target UAV. The combat scheduling center transmits the prior information of the target UAV to the radar.

[0049] S2, analyzing the typical working mode information of the target UAV according to the intelligence data or prior information of the target UAV, and extracting the flight height parameter and the working radius parameter of the target UAV from the typical working mode information of the target UAV;

[0050] Specifically, the typical working mode information includes but is not limited to working radius parameter, endurance time parameter, flight speed parameter, flight height parameter and aircraft size parameter; wherein the flight height parameter includes maximum flight height parameter and minimum flight height parameter.

[0051] S3, obtaining radar parameters, and controlling the radar to generate a plurality of penetration beams with the same coverage area according to the radar parameters, the flight height parameters and the working radius parameters.

[0052] Specifically, the radar parameters include radar station height parameter and total number of penetration beams; let the total number of penetration beams be N, define the beam number i from 1 to N, corresponding to the N penetration beams with low to high pitch angle; in the S3, the same coverage area of each penetration beam is realized by controlling the pointing angle of each penetration beam;

[0053] In the low pitch angle range that cannot cover the maximum flight height of the target UAV, the pointing angle of the penetration beam with beam number i is

[0054]

[0055] In a high pitch angle range capable of covering the highest flight height of the target UAV, the pointing angle of the sounding beam with beam number i is

[0056]

[0057] Wherein, the dividing line between low pitch angle and high pitch angle is When , it is considered as low pitch angle; when , it is considered as high pitch angle.

[0058] Specifically, is the pointing angle of the sounding beam with beam number i, h0 is the radar station height parameter, h1 is the lowest flight height parameter, h2 is the highest flight height parameter, and r is the working radius parameter.

[0059] Figure 2 is a radar sounding scene diagram for a UAV with a typical working mode. It can be seen that the UAV with a typical working mode often has a typical flight range, which can be determined by the flight height parameters and the working radius parameters extracted from the typical working mode parameters. The height parameters are all ground height parameters.

[0060] Figure 3 is a radar sounding diagram for a UAV with a typical working mode using different beams. In Figure 3 , (a) is a radar sounding diagram for a UAV with a typical working mode using traditional uniform beams. It can be seen that the traditional uniform beams have obvious limitations. The effective utilization rate (coverage area S i ) of each beam has obvious differences. Some beams cover a larger area, and some beams only cover a smaller effective area or may not be used at all. Under the reasonable assumption that the target UAV appears at each position in the typical flight area with the same probability, each beam in the uniform scanning configuration obviously has different utilization efficiency, which also reduces the radar antenna performance. (b) is a radar sounding diagram for a UAV with a typical working mode using beams generated by the method of the present application. In this configuration, each beam has the same area of effective scanning range (coverage area S i ), i.e. each scanning beam can be used with uniform efficiency, while improving the average antenna gain.

[0061] The effects of traditional uniform beams and beams generated by the method of the present application will be compared in the following specific examples:

[0062] With the highest flight height parameter h2 of the target UAV being 15km, the lowest flight height parameter h1 being 5km, the working radius parameter r being 15km, the radar station height parameter h0 being 0m, and the beam quantity N being 8, the beam center pointing angle obtained is as shown in the following table 1. Figure 4 And table 1. Figure 4 In the table 1, (a) is a radar probing beam simulation diagram of a uniform beam generated by a traditional method, and (b) is a radar probing beam simulation diagram of a beam generated by the method.

[0063] Table 1: Radar probing beam center pointing angles generated by different methods

[0064]

[0065] The target UAV is radar-probed by using the uniform beam generated by the traditional method and the special beam generated by the method respectively, and the beam utilization rate and the average antenna gain are calculated and compared as shown in the following table 2.

[0066] Table 2: Comparison table of beam utilization rate / average antenna gain performance

[0067]

[0068] It can be seen that, compared with the traditional uniform beam, the special beam configured by the method can effectively balance the beam utilization rate, reduce the scheduling loss, and improve the beam antenna gain and the average antenna gain when radar-probing the target UAV, and the method has good application prospect and application effect.

[0069] Based on the above-mentioned radar-probing beam configuration method for the UAV, the application further provides a radar-probing beam configuration system for the UAV.

[0070] As shown in the following table 1, a radar-probing beam configuration system for the UAV comprises the following modules, Figure 5

[0071] A basic data information acquisition module is configured to acquire intelligence data or prior information of a target UAV.

[0072] A height radius parameter extraction module is configured to analyze typical working mode information of the target UAV according to the intelligence data or prior information of the target UAV, and extract flight height parameters and working radius parameters of the target UAV from the typical working mode information of the target UAV.

[0073] A special probing beam generation module is configured to acquire radar parameters, and control a radar to generate a plurality of probing beams with the same coverage area according to the radar parameters, the flight height parameters and the working radius parameters.

[0074] ​In the embodiment, the flight height parameter comprises a maximum flight height parameter and a minimum flight height parameter; the radar parameter comprises a radar station height parameter and a total number of sounding beams; the total number of sounding beams is defined as N, and the beam number i is defined from 1 to N, corresponding to N sounding beams with the elevation angle from low to high; in the dedicated sounding beam generation module, the coverage area of each sounding beam is realized by controlling the pointing angle of each sounding beam.

[0075] When , the pointing angle of the sounding beam is

[0076]

[0077] When , the pointing angle of the sounding beam is

[0078]

[0079] wherein, is the pointing angle of the sounding beam with the beam number i, h0 is the radar station height parameter, h1 is the minimum flight height parameter, h2 is the maximum flight height parameter, and r is the working radius parameter.

[0080] In the embodiment, the basic data information acquisition module is specifically used for identifying the model of the target UAV, reading corresponding intelligence data in a database according to the model of the target UAV, or pre-tracing the target UAV through a multi-sensor device, summarizing the flight state of the target UAV, and acquiring prior information of the target UAV from the flight state of the target UAV.

[0081] In the embodiment, in the height radius parameter extraction module, the typical working mode information comprises a working radius parameter, a endurance time parameter, a flight speed parameter, a flight height parameter and an aircraft size parameter; wherein, the flight height parameter comprises a maximum flight height parameter and a minimum flight height parameter.

[0082] Compared with the conventional uniform beam, the dedicated beam generated by the radar sounding beam configuration method and system for the UAV improves the utilization rate of intelligence data and prior information, has a complete closed expression, is simple and effective, balances the effective utilization rate (effective coverage area) of each beam, can effectively reduce the beam scheduling loss in the radar sounding process, and further improves the antenna gain and average antenna gain of each beam, and enhances the radar sounding performance.

[0083] The above merely describes preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for configuring radar detection beams for unmanned aerial vehicles (UAVs), characterized in that: Includes the following steps, S1, Obtain intelligence data or prior information about the target drone; S2, based on the intelligence data or prior information of the target UAV, analyze the typical working mode information of the target UAV, and extract the flight altitude parameter and working radius parameter of the target UAV from the typical working mode information of the target UAV. S3, acquire radar parameters, and control the radar to generate multiple probe beams with the same coverage area based on the radar parameters, the flight altitude parameters, and the working radius parameters; The flight altitude parameters include the highest flight altitude parameter and the lowest flight altitude parameter; the radar parameters include the radar deployment altitude parameter and the total number of detection beams; Let the total number of the probe beams be... Define beam number From 1 to The corresponding pitch angles from low to high Each of the probe beams; in S3, the coverage area of ​​each probe beam is the same by controlling the pointing angle of each probe beam; when At that time, the pointing angle of the probe beam is, ； when At that time, the pointing angle of the probe beam is, ； in, The beam number is The pointing angle of the probe beam, The radar station deployment height parameter is... The minimum flight altitude parameter, The maximum flight altitude parameter is... The working radius parameter is denoted as .

2. The radar detection beam configuration method for unmanned aerial vehicles according to claim 1, characterized in that: Specifically, S1 is, The model of the target UAV is identified, and corresponding intelligence data is retrieved from a military database based on the model of the target UAV; or, the target UAV is continuously tracked in advance using multiple sensors, the flight status of the target UAV is summarized, and prior information of the target UAV is obtained from the flight status of the target UAV.

3. The radar detection beam configuration method for unmanned aerial vehicles according to claim 1, characterized in that: In S2, the typical operating mode information includes operating radius parameters, endurance parameters, flight speed parameters, flight altitude parameters, and aircraft size parameters; wherein, the flight altitude parameters include maximum flight altitude parameters and minimum flight altitude parameters.

4. A radar detection beam configuration system for unmanned aerial vehicles (UAVs), characterized in that: Includes the following modules, The basic data information acquisition module is used to acquire intelligence data or prior information about the target UAV. The altitude and radius parameter extraction module is used to analyze the typical working mode information of the target UAV based on the intelligence data or prior information of the target UAV, and extract the flight altitude parameter and working radius parameter of the target UAV from the typical working mode information of the target UAV. A dedicated probe beam generation module is used to acquire radar parameters and control the radar to generate multiple probe beams with the same coverage area based on the radar parameters, the flight altitude parameters, and the working radius parameters. The flight altitude parameters include the highest flight altitude parameter and the lowest flight altitude parameter; the radar parameters include the radar deployment altitude parameter and the total number of detection beams; Let the total number of the probe beams be... Define beam number From 1 to The corresponding pitch angles from low to high The probe beam described; In the dedicated probe beam generation module, the coverage area of ​​each probe beam is made the same by controlling the pointing angle of each probe beam. when At that time, the pointing angle of the probe beam is, ； when At that time, the pointing angle of the probe beam is, ； in, The beam number is The pointing angle of the probe beam, The radar station deployment height parameter is... The minimum flight altitude parameter, The maximum flight altitude parameter is... The working radius parameter is denoted as .

5. The radar detection beam configuration system for unmanned aerial vehicles according to claim 4, characterized in that: The basic data information acquisition module is specifically used for, The model of the target UAV is identified, and corresponding intelligence data is retrieved from a military database based on the model of the target UAV; or, the target UAV is continuously tracked in advance using multiple sensors, the flight status of the target UAV is summarized, and prior information of the target UAV is obtained from the flight status of the target UAV.

6. The radar detection beam configuration system for unmanned aerial vehicles according to claim 4, characterized in that: In the altitude radius parameter extraction module, the typical operating mode information includes operating radius parameters, endurance time parameters, flight speed parameters, flight altitude parameters, and aircraft size parameters; wherein, the flight altitude parameters include maximum flight altitude parameters and minimum flight altitude parameters.

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