Radar searching method and system after air combat target loss

Abstract

The invention provides a radar search method and system after air combat target loss. The radar searching method after air combat target loss comprises the following steps: extracting motion characteristic information of a target object at a target loss moment, radar characteristic information and target data information detected by a radar; re-searching the lost target, and obtaining the operation characteristic information of the aerial carrier at the re-searching moment; acquiring a radar searching and scanning center according to the last frame of target information before the target is lost and the operation characteristic information of the real-time aerial carrier; according to the target loss duration, the last frame of target position information before target loss and the target operation characteristic information, obtaining the orientation and pitching range of the radar search scanning area; a radar beam scans outwards from a scanning center according to a scanning angular velocity, a machine search radar scans according to a spiral, and a phase control radar scans according to a beam position. The system comprises modules corresponding to the steps of the method.

Description

Technical Field

[0001] The invention provides a radar search method and system after an air combat target is lost, belonging to the technical field of radar search. Background Art

[0002] In modern air combat, radar systems, as the core detection equipment in the air defense system, undertake the important tasks of detecting, tracking and guiding weapon systems to intercept enemy targets. However, with the increasing complexity of the battlefield environment and the continuous advancement of electronic countermeasure technology, radars face many challenges in tracking air combat targets. When air combat targets are suddenly lost due to various factors (such as electromagnetic interference, target stealth technology, low-altitude penetration, etc.), how to quickly and accurately re-search and lock the target becomes a key issue to improve air combat effectiveness and ensure combat victory. After the target is lost, traditional radars often use full airspace scanning to search. Although this method can cover all possible target locations, it is inefficient and easily affected by electromagnetic interference and clutter, resulting in poor search results. In addition, traditional radars are difficult to fully utilize the motion characteristics information and radar characteristics information before the target is lost during the search process, and cannot quickly lock the possible position range of the target. Summary of the invention

[0003] The present invention provides a radar search method and system after an air combat target is lost, which is used to solve the above technical problems in the prior art. The technical solutions adopted are as follows:

[0004] A radar search method after an air combat target is lost, the radar search method after an air combat target is lost comprising:

[0005] Extract the target object's motion characteristic information, radar characteristic information and target data information detected by the radar at the time when the target is lost;

[0006] Re-search the lost target and obtain the operating characteristic information of the carrier aircraft at the time of re-search;

[0007] Obtain the radar search scanning center based on the last frame of target information before the target is lost and the real-time carrier aircraft operation characteristic information;

[0008] The azimuth and elevation range of the radar search scanning area are obtained according to the target loss duration, the target position information of the last frame before the target is lost, and the target operation characteristic information;

[0009] The radar beam scans from the scanning center outward at the scanning angular velocity, the machine-search radar scans in a spiral, and the phased array radar scans according to the wave position.

[0010] Furthermore, the motion characteristic information, radar characteristic information and target data information detected by the radar of the target object at the time of target loss are extracted, including:

[0011] Extracting and recording the motion characteristic information of the target object at the moment of target loss; wherein the motion characteristic information of the target object includes loss position information, flight envelope, climb data, dive data and turn data, etc.;

[0012] Extract the time information corresponding to the target loss;

[0013] Extracting radar characteristic information corresponding to the target loss moment according to the moment information corresponding to the target loss; wherein the radar characteristic information includes characteristics such as transmission power data, transmission frequency data, beam and beam scanning angular velocity;

[0014] The data information corresponding to the target detected by the radar is retrieved, wherein the data information corresponding to the target includes information such as longitude and latitude, altitude, speed data, and timestamp.

[0015] Furthermore, the lost target is searched again, and the operation characteristic information of the carrier aircraft at the time of the re-search is obtained, including:

[0016] Initiate a re-search for the lost target when the target is lost;

[0017] When searching for the target again, extracting the start time of searching again for the lost target;

[0018] The operation characteristic information of the carrier corresponding to the start time of the re-search is retrieved, wherein the operation characteristic information of the carrier includes latitude and longitude position information, carrier speed information, carrier attitude information, timestamp and other information.

[0019] Furthermore, according to the last frame of target information before the target is lost and the real-time carrier aircraft operation characteristic information, the radar search scanning center is obtained, including:

[0020] Extracting motion characteristic information of the target object at the time when the target is lost; wherein the motion characteristic information of the target object at the time when the target is lost is the target information corresponding to the last frame before the target is lost;

[0021] Extracting the operating characteristic information of the carrier corresponding to the re-searched start time and the real-time operating characteristic information of the carrier;

[0022] The radar search scanning center is obtained by utilizing the motion characteristic information of the target object at the time when the target is lost, combining the operation characteristic information of the carrier aircraft corresponding to the start time of the re-search and the real-time operation characteristic information of the carrier aircraft.

[0023] Furthermore, the azimuth and elevation range of the radar search scanning area are obtained according to the target loss duration, the last frame target position information before the target is lost, and the target operation characteristic information, including:

[0024] Extracting the time information corresponding to the target loss, and obtaining the target loss duration according to the time information corresponding to the target loss;

[0025] Extracting the lost position information of the target object corresponding to the target loss moment, wherein the lost position information of the target object corresponding to the target loss moment is the last frame of target position information before the target is lost;

[0026] Extracting the flight envelope, climb data, dive data and turn data contained in the motion characteristic information of the target object at the moment of target loss; wherein the flight envelope, climb data, dive data and turn data contained in the motion characteristic information of the target object at the moment of target loss is the target operation characteristic information;

[0027] Acquiring azimuth angle parameters and pitch angle parameters of the target object during flight according to the flight envelope, climb data, dive data and turn data contained in the motion characteristic information of the target object at the moment of target loss;

[0028] The azimuth and elevation parameters of the target object during flight are used to obtain the azimuth and elevation range of the radar search scanning area;

[0029] The azimuth and elevation range of the radar search scanning area are obtained by the following formula:

[0030] ω=[ω last -Δω,ω last +Δω]

[0031] Where ω represents the azimuth angle range of the radar search scanning area; ω last represents the azimuth of the target object in the last frame before the target is lost; Δω represents the azimuth variation range variable; wherein, the azimuth variation range variable is obtained by the following formula:

[0032]

[0033] Where n represents the number of turns of the target object during flight contained in the turning data; ω ci represents the azimuth of the target object after the turn corresponding to the i-th turn; ω xi represents the angle between the target object and the carrier before the turn corresponding to the i-th turn; ω0 represents the azimuth angle variable reference value; ω max It indicates the azimuth change rate corresponding to the maximum azimuth that occurs during the turning process of the target object; t indicates the target loss duration; ω i represents the azimuth change rate corresponding to the i-th turn; t i represents the turning time corresponding to the i-th turn;

[0034] In addition, the elevation range of the radar search scanning area is obtained by the following formula:

[0035] θ=[θ last -Δθ,θ last +Δθ]

[0036] Where θ represents the elevation angle range of the radar search scanning area; θ last represents the pitch angle of the target object in the last frame before the target is lost; Δθ represents the pitch angle variation range variable; wherein, the pitch angle variation range variable is obtained by the following formula:

[0037]

[0038] Among them, Δθ represents the variable of pitch angle variation range; m represents the number of pitch angle occurrences during the flight of the target object contained in the motion characteristic information; θ ci represents the pitch angle corresponding to the pitch change of the target object for the i-th time; θ xi represents the pitch angle corresponding to the pitch change of the target object before the i-th pitch change; θ maxi represents the instantaneous change rate of the maximum pitch angle corresponding to the i-th pitch change of the target object; t mi represents the duration of the maximum instantaneous change rate of the pitch angle corresponding to the pitch change of the target object for the i-th time during the pitch change of the target object for the i-th time; θ0 represents the pitch angle variable reference value; wherein, the pitch angle variable reference value is obtained by the following formula:

[0039]

[0040] Among them, θ max represents the angle change rate corresponding to the maximum pitch angle during the pitch angle change of the target object; t represents the target loss duration; θ i represents the overall change rate of the pitch angle corresponding to the i-th pitch angle change; t θi Indicates the duration of the overall pitch angle change corresponding to the i-th pitch angle change.

[0041] A radar search system after an air combat target is lost, the radar search system after an air combat target is lost comprises:

[0042] The first information acquisition module is used to extract the motion characteristic information, radar characteristic information and target data information detected by the radar of the target object at the time of target loss;

[0043] A second information acquisition module is used to re-search the lost target and obtain the operation characteristic information of the carrier aircraft at the time of re-search;

[0044] The scanning center acquisition module is used to obtain the radar search scanning center based on the last frame of target information before the target is lost and the real-time carrier aircraft operation characteristic information;

[0045] The scanning area and pitch information acquisition module is used to obtain the azimuth and pitch range of the radar search scanning area according to the target loss duration, the target position information of the last frame before the target loss, and the target operation characteristic information;

[0046] The radar scanning control module is used to scan the radar beam from the scanning center outward according to the scanning angular velocity, the machine search radar scans according to the spiral, and the phased array radar scans according to the wave position.

[0047] Furthermore, the first information acquisition module includes:

[0048] A motion characteristic information extraction module is used to extract and record the motion characteristic information of the target object at the time of target loss; wherein the motion characteristic information of the target object includes loss position information, flight envelope, climb data, dive data and turn data, etc.;

[0049] The time information extraction module allows users to extract the time information corresponding to the target loss;

[0050] A radar characteristic information acquisition module, used to extract radar characteristic information corresponding to the target loss moment according to the moment information corresponding to the target loss; wherein the radar characteristic information includes characteristics such as transmission power data, transmission frequency data, beam and beam scanning angular velocity;

[0051] The data information retrieval module is used to retrieve the data information corresponding to the target detected by the radar, wherein the data information corresponding to the target includes information such as longitude and latitude, velocity data and timestamp.

[0052] Furthermore, the second information acquisition module includes:

[0053] A re-search control module is used to start a re-search for the lost target when the target is lost;

[0054] A start time acquisition module, used for extracting the start time for re-searching the lost target when re-searching the target;

[0055] The re-search operation characteristic information acquisition module is used to retrieve the operation characteristic information of the carrier corresponding to the start time of the re-search, wherein the operation characteristic information of the carrier includes latitude and longitude position information, carrier speed information, carrier attitude information and timestamp information.

[0056] Furthermore, the scanning center acquisition module includes:

[0057] A target object motion characteristic information retrieving module is used to extract the motion characteristic information of the target object at the moment when the target is lost; wherein the motion characteristic information of the target object at the moment when the target is lost is the target information corresponding to the last frame before the target is lost;

[0058] An operation characteristic information extraction module, used to extract the operation characteristic information of the carrier corresponding to the re-searched start time and the real-time operation characteristic information of the carrier;

[0059] The radar search scanning center determination module is used to obtain the radar search scanning center by utilizing the motion characteristic information of the target object at the time when the target is lost combined with the operation characteristic information of the carrier corresponding to the start time of the re-search and the real-time operation characteristic information of the carrier.

[0060] Furthermore, the scanning area and pitch information acquisition module includes:

[0061] A target loss duration acquisition module is used to extract the time information corresponding to the target loss, and obtain the target loss duration according to the time information corresponding to the target loss;

[0062] A lost position information extraction module is used to extract the lost position information of the target object corresponding to the target loss moment, wherein the lost position information of the target object corresponding to the target loss moment is the last frame of target position information before the target is lost;

[0063] a motion characteristic information retrieving module, used for extracting the flight envelope, climb data, dive data and turning data contained in the motion characteristic information of the target object at the moment of target loss; wherein the flight envelope, climb data, dive data and turning data contained in the motion characteristic information of the target object at the moment of target loss is the target operation characteristic information;

[0064] an azimuth parameter and pitch angle parameter acquisition module, used to acquire the azimuth parameter and pitch angle parameter of the target object during flight according to the flight envelope, climb data, dive data and turn data contained in the motion characteristic information of the target object at the moment of target loss;

[0065] A scanning azimuth and elevation range determination module is used to obtain the azimuth and elevation range of the radar search scanning area using the azimuth parameters and elevation parameters of the target object during flight;

[0066] The azimuth and elevation range of the radar search scanning area are obtained by the following formula:

[0067] ω=[ω last -Δω,ω last +Δω]

[0068] Where ω represents the azimuth angle range of the radar search scanning area; ω last represents the azimuth of the target object in the last frame before the target is lost; Δω represents the azimuth variation range variable; wherein, the azimuth variation range variable is obtained by the following formula:

[0069]

[0070] Where n represents the number of turns of the target object during flight contained in the turning data; ω ci represents the azimuth of the target object after the turn corresponding to the i-th turn; ω xi represents the angle between the target object and the carrier before the turn corresponding to the i-th turn; ω0 represents the azimuth angle variable reference value; ω max It indicates the azimuth change rate corresponding to the maximum azimuth that occurs during the turning process of the target object; t indicates the target loss duration; ω i represents the azimuth change rate corresponding to the i-th turn; t i represents the turning time corresponding to the i-th turn;

[0071] In addition, the elevation range of the radar search scanning area is obtained by the following formula:

[0072] θ=[θ last -Δθ,θ last +Δθ]

[0073] Where θ represents the elevation angle range of the radar search scanning area; θ last represents the pitch angle of the target object in the last frame before the target is lost; Δθ represents the pitch angle variation range variable; wherein, the pitch angle variation range variable is obtained by the following formula:

[0074]

[0075] Among them, Δθ represents the variable of pitch angle variation range; m represents the number of pitch angle occurrences during the flight of the target object contained in the motion characteristic information; θ ci represents the pitch angle corresponding to the pitch change of the target object for the i-th time; θ xi represents the pitch angle corresponding to the pitch change of the target object before the i-th pitch change; θ maxi represents the instantaneous change rate of the maximum pitch angle corresponding to the i-th pitch change of the target object; t mi represents the duration of the maximum instantaneous change rate of the pitch angle corresponding to the pitch change of the target object for the i-th time during the pitch change of the target object for the i-th time; θ0 represents the pitch angle variable reference value; wherein, the pitch angle variable reference value is obtained by the following formula:

[0076]

[0077] Among them, θ max represents the angle change rate corresponding to the maximum pitch angle during the pitch angle change of the target object; t represents the target loss duration; θ i represents the overall change rate of the pitch angle corresponding to the i-th pitch angle change; t θi Indicates the duration of the overall pitch angle change corresponding to the i-th pitch angle change.

[0078] Beneficial effects of the present invention:

[0079] The radar search method and system after the air combat target is lost proposed by the present invention provides rich information support for subsequent search and tracking tasks by comprehensively extracting various types of information at the moment of target loss, including target motion characteristics, radar characteristics and detection data. Based on the motion characteristics and radar characteristics information before the target is lost, the system can more accurately predict the possible position range and motion trajectory of the target, thereby formulating more targeted search strategies and improving search efficiency. By quickly extracting and processing relevant information, the system can quickly start the search program after the target is lost, shorten the reaction time, and provide more timely support for combat decisions. This technical solution is not only applicable to different types of radar systems, but also can flexibly adjust the search strategy according to changes in target characteristics and battlefield environment, thereby enhancing the adaptability and robustness of the system. This technical solution provides strong support for subsequent radar search and tracking tasks by accurately extracting and processing relevant information at the moment of target loss, significantly improving combat effectiveness and response speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] Figure 1 is a flow chart of the method of the present invention;

[0081] Figure 2 The system block diagram of the system of the present invention. DETAILED DESCRIPTION

[0082] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0083] The embodiment of the present invention provides a radar search method after an air combat target is lost, such as Figure 1 As shown, the radar search method after the air combat target is lost includes:

[0084] S1, extracting the motion characteristic information, radar characteristic information and target data information detected by the radar of the target object at the time of target loss;

[0085] S2. Re-search the lost target and obtain the operation characteristic information of the carrier aircraft at the time of re-search;

[0086] S3, obtaining the radar search scanning center according to the last frame of target information before the target is lost and the real-time carrier aircraft operation characteristic information;

[0087] S4, obtaining the azimuth and elevation range of the radar search scanning area according to the target loss duration, the last frame target position information before the target is lost, and the target operation characteristic information;

[0088] S5. The radar beam scans from the scanning center outward at the scanning angular velocity, the machine search radar scans in a spiral, and the phased array radar scans according to the wave position.

[0089] The working principle of the above technical solution is: at the moment the target is lost, the system quickly extracts information about the target object's motion characteristics (such as speed, acceleration, heading, etc.), radar characteristics information (such as radar operating frequency, beam width, etc.) and the last frame of target data information detected by the radar (such as position coordinates, echo intensity, etc.). This information provides a key basis for subsequent searches. The system starts a re-search program for the lost target and simultaneously obtains the carrier's operating characteristics information at the time of re-search, including the carrier's position, speed, heading, and possible maneuvers. This information is crucial for determining the search scan center.

[0090] Combining the last frame of target information before the target is lost and the real-time carrier aircraft's operating characteristics information, the system calculates the most likely radar search scanning center through an algorithm. This center position is usually located on the extension line of the target's trajectory before it is lost, and is adjusted considering the real-time motion state of the carrier aircraft. According to the target loss duration, the last frame of target position information before the target is lost, and the target's operating characteristics information (such as speed, acceleration, etc.), the system further calculates the azimuth and pitch range of the radar search scanning area. This range not only covers the area where the target may move, but also takes into account the target's possible maneuvers and error range. According to the determined search scanning center and range, the radar beam scans outward from the scanning center at a predetermined scanning angular velocity. Different types of radars use different scanning methods: mechanical search radars scan along a spiral trajectory to cover a wider range of airspace; phased array radars use their ability to quickly switch beams to perform efficient scanning at preset wave positions.

[0091] The effect of the above technical solution is: by integrating historical data and real-time information, the system can more accurately predict the possible location range of the target, thereby narrowing the search area and improving the search efficiency. The in-depth analysis of the target motion characteristics and radar characteristics makes the search strategy closer to the actual situation, reduces the possibility of false alarms and missed alarms, and improves the accuracy of the search. According to the different types of radars, the corresponding scanning methods are adopted to give full play to the advantages of various types of radars and improve the compatibility and flexibility of the system. Rapidly re-locking lost targets in air combat is of great significance for maintaining control of the enemy situation and implementing effective interception, which helps to improve the overall combat effectiveness.

[0092] In summary, this technical solution achieves fast and accurate search after the loss of air combat targets by optimizing the radar search strategy, which plays a positive role in improving radar detection capabilities and combat effectiveness in modern air combat.

[0093] In one embodiment of the present invention, the motion characteristic information, radar characteristic information and target data information detected by the radar of the target object at the time of target loss are extracted, including:

[0094] S101, extracting and recording the motion characteristic information of the target object at the moment of target loss; wherein the motion characteristic information of the target object includes loss position information, flight envelope, climb data, dive data and turn data, etc.;

[0095] S102, extracting the time information corresponding to the target loss;

[0096] S103, extracting radar characteristic information corresponding to the target loss moment according to the moment information corresponding to the target loss; wherein the radar characteristic information includes characteristics such as transmission power data, transmission frequency data, beam and beam scanning angular velocity;

[0097] S104, retrieving data information corresponding to the target detected by the radar, wherein the data information corresponding to the target includes information such as latitude and longitude, high position, speed data, and timestamp.

[0098] The working principle of the above technical solution is: at the moment of target loss, the system immediately captures and records various parameters related to the target object's motion state. These parameters include lost location information (such as longitude and latitude coordinates), flight envelope (parameter ranges such as speed, altitude and overload that describe aircraft performance), climb data (such as climb rate and climb angle), dive data (such as dive speed and dive angle) and turn data (such as turn radius and turn rate). These data reflect the dynamic behavior of the target before it is lost and are crucial to predicting its subsequent possible location.

[0099] The system accurately records the specific moment when the target is lost, including detailed time information such as year, month, day, hour, minute, and second. This step is the reference point for the subsequent extraction of radar characteristic information and target data information, ensuring the synchronization and consistency of all relevant information. According to the specific moment when the target is lost, the system traces back and extracts the working status parameters of the radar at that moment. These parameters include transmit power data (such as transmit power size), transmit frequency data (such as operating frequency range), beam characteristics (such as beam width, beam shape), and beam scanning angular velocity. This information is crucial to understanding the detection capabilities and limitations of the radar when the target is lost, and is helpful for the formulation of subsequent search strategies. The system retrieves the detection data of the last moment or the near moment before the target is lost from the radar database. These data include the target's latitude and longitude high position (position information with a timestamp accurate to seconds), speed data (such as ground speed, airspeed), timestamp information, etc. The timestamp information ensures the timeliness and accuracy of the data, allowing the system to accurately associate the detection data before and after the target is lost.

[0100] The effect of the above technical solution is: by comprehensively extracting various types of information at the moment the target is lost, including target motion characteristics, radar characteristics and detection data, it provides rich information support for subsequent search and tracking tasks. Based on the motion characteristics and radar characteristics information before the target is lost, the system can more accurately predict the possible position range and motion trajectory of the target, thereby formulating more targeted search strategies and improving search efficiency. By quickly extracting and processing relevant information, the system can quickly start the search program after the target is lost, shorten the reaction time, and provide more timely support for combat decisions. This technical solution is not only applicable to different types of radar systems, but also can flexibly adjust the search strategy according to changes in target characteristics and battlefield environment, enhancing the adaptability and robustness of the system.

[0101] In summary, this technical solution provides strong support for subsequent radar search and tracking tasks by accurately extracting and processing relevant information at the moment the target is lost, significantly improving combat effectiveness and response speed.

[0102] In one embodiment of the present invention, re-searching the lost target and obtaining the operation characteristic information of the carrier aircraft at the time of re-searching includes:

[0103] S201, starting a re-search for the lost target when the target is lost;

[0104] S202, when searching for the target again, extracting the start time of searching for the lost target again;

[0105] S203, retrieving the operation characteristic information of the carrier corresponding to the start time of the re-search, wherein the operation characteristic information of the carrier includes latitude and longitude position information, carrier speed information, carrier attitude information, timestamp and other information.

[0106] The working principle of the above technical solution is: once the radar system detects that the target is lost (i.e., it cannot continue to track the original target), the re-search mechanism is immediately triggered. This step is automatic and immediate, ensuring a quick response after the target is lost without delaying the search opportunity. The system accurately records the start time of the re-search, including detailed time information such as year, month, day, hour, minute, and second. This step provides a time reference for the subsequent retrieval of the carrier's operating characteristics information, ensuring the synchronization and accuracy of the information.

[0107] According to the start time of the re-search, the system retrieves the corresponding operating characteristic information from the carrier data source. This information includes the latitude and longitude position information of the carrier (precisely locate the position of the carrier in the air), the carrier speed information (such as ground speed, airspeed, etc., reflecting the movement rate and direction of the carrier), the carrier attitude information (such as pitch angle, roll angle, yaw angle, etc., describing the flight attitude of the carrier) and timestamp information (to ensure the timeliness and accuracy of the data). By comprehensively analyzing this information, the system can grasp the dynamic state of the carrier in real time, providing strong support for the adjustment of search strategies and target tracking.

[0108] The effect of the above technical solution is: by acquiring the operating characteristic information of the carrier aircraft in real time, the system can more accurately predict the relative position relationship between the carrier aircraft and the target, thereby optimizing the search path and strategy and improving the search efficiency. The operating characteristic information of the carrier aircraft reflects its actual state in the air. Re-searching the lost target in combination with this information can reduce the possibility of misjudgment and missed judgment and improve the accuracy of the search. After the target is lost, the re-search mechanism is quickly started and the operating characteristic information of the carrier aircraft is acquired in real time, which provides more timely and accurate information support for combat decisions and improves the combat response speed. This technical solution can dynamically adjust the search strategy according to the real-time status of the carrier aircraft, enhance the flexibility and adaptability of the system, and enable it to maintain efficient search and tracking capabilities in complex and changing battlefield environments.

[0109] In summary, this technical solution significantly improves the search efficiency, accuracy and combat response speed by acquiring the operating characteristics information of the carrier aircraft in real time and applying it to the re-search process of lost targets, while enhancing the flexibility and adaptability of the system.

[0110] In one embodiment of the present invention, the radar search scanning center is obtained according to the last frame of target information before the target is lost and the real-time carrier aircraft operation characteristic information, including:

[0111] S301, extracting motion characteristic information of a target object at the time when the target is lost; wherein the motion characteristic information of the target object at the time when the target is lost is the target information corresponding to the last frame before the target is lost;

[0112] S302, extracting the operation characteristic information of the carrier corresponding to the re-searched start time and the real-time operation characteristic information of the carrier;

[0113] S303, obtaining a radar search scanning center by using the motion characteristic information of the target object at the time when the target is lost, combined with the operation characteristic information of the carrier corresponding to the start time of the re-search and the real-time operation characteristic information of the carrier.

[0114] The working principle of the above technical solution is as follows: First, the system extracts the target information corresponding to the last frame before the target is lost from the radar detection data. This information includes the target's position (such as longitude and latitude coordinates), speed, acceleration, heading and other motion characteristic parameters. These parameters reflect the target's immediate state before it is lost and are an important basis for predicting its subsequent possible location.

[0115] The system extracts the operating characteristic information of the aircraft at the time of re-search start and in real time (i.e., current). This information includes, but is not limited to, the aircraft's latitude, longitude, altitude, speed, attitude (such as pitch angle, roll angle, yaw angle), etc. By comparing the state changes of the aircraft at the time of re-search start and in real time, the system can evaluate the dynamic behavior of the aircraft during the re-search process and provide a reference for the aircraft's perspective for determining the search scan center.

[0116] Finally, the system integrates the target motion characteristic information at the moment of target loss and the operating characteristic information of the carrier during the re-search process, and calculates the radar search scan center through an algorithm. This calculation process usually involves the prediction of the target's motion trajectory (based on the motion state before the target is lost) and the consideration of the relative position change of the carrier (based on the real-time status information of the carrier). By integrating these two aspects of information, the system can more accurately determine the search scan center and improve the efficiency and accuracy of the re-search.

[0117] The effect of the above technical solution is: by accurately predicting the possible position of the target after it is lost and combining the real-time status information of the carrier aircraft, the system can locate the search and scan center more quickly, reduce the invalid search area, and improve the search efficiency. The search and scan center determined by the comprehensive target motion characteristics and the carrier aircraft operation characteristics information is closer to the actual possible position of the target, which helps to reduce the possibility of misjudgment and missed judgment and improve the accuracy of the search. In combat scenarios such as air combat, quickly and accurately re-locking lost targets is crucial to maintaining control of the combat situation and implementing effective interception. The application of this technical solution can significantly improve combat effectiveness and provide strong support for combat victory. This technical solution is not only suitable for specific types of radar and carrier aircraft systems, but also can flexibly adjust the search strategy according to changes in target characteristics and battlefield environment, enhancing the adaptability and robustness of the system.

[0118] In one embodiment of the present invention, the azimuth and elevation range of the radar search scanning area are obtained according to the target loss duration, the last frame of target position information before the target is lost, and the target operation characteristic information, including:

[0119] S401, extracting the time information corresponding to the target loss, and obtaining the target loss duration according to the time information corresponding to the target loss;

[0120] S402, extracting the lost position information of the target object corresponding to the target loss moment, wherein the lost position information of the target object corresponding to the target loss moment is the last frame of target position information before the target is lost;

[0121] S403, extracting the flight envelope, climb data, dive data, and turn data contained in the motion characteristic information of the target object at the moment of target loss; wherein the flight envelope, climb data, dive data, and turn data contained in the motion characteristic information of the target object at the moment of target loss is the target operation characteristic information;

[0122] S404, acquiring azimuth angle parameters and pitch angle parameters of the target object during flight according to the flight envelope, climb data, dive data and turn data contained in the motion characteristic information of the target object at the moment of target loss;

[0123] S405, using the azimuth angle parameters and the pitch angle parameters of the target object during flight to obtain the azimuth and pitch range of the radar search scanning area;

[0124] The azimuth and elevation range of the radar search scanning area are obtained by the following formula:

[0125] ω=[ω last -Δω,ω last +Δω]

[0126] Where ω represents the azimuth angle range of the radar search scanning area; ω last represents the azimuth of the target object in the last frame before the target is lost; Δω represents the azimuth variation range variable; wherein, the azimuth variation range variable is obtained by the following formula:

[0127]

[0128] Where n represents the number of turns of the target object during flight contained in the turning data; ω ci represents the azimuth of the target object after the turn corresponding to the i-th turn; ω xi represents the angle between the target object and the carrier before the turn corresponding to the i-th turn; ω0 represents the azimuth angle variable reference value; ω max It indicates the azimuth change rate corresponding to the maximum azimuth that occurs during the turning process of the target object; t indicates the target loss duration; ω i represents the azimuth change rate corresponding to the i-th turn; t i represents the turning time corresponding to the i-th turn;

[0129] In addition, the elevation range of the radar search scanning area is obtained by the following formula:

[0130] θ=[θ last -Δθ,θ last +Δθ]

[0131] Where θ represents the elevation angle range of the radar search scanning area; θ last represents the pitch angle of the target object in the last frame before the target is lost; Δθ represents the pitch angle variation range variable; wherein, the pitch angle variation range variable is obtained by the following formula:

[0132]

[0133] Among them, Δθ represents the variable of pitch angle variation range; m represents the number of pitch angle occurrences during the flight of the target object contained in the motion characteristic information; θ ci represents the pitch angle corresponding to the pitch change of the target object for the i-th time; θ xi represents the pitch angle corresponding to the pitch change of the target object before the i-th pitch change; θ maxi represents the instantaneous change rate of the maximum pitch angle corresponding to the i-th pitch change of the target object; t mi represents the duration of the maximum instantaneous change rate of the pitch angle corresponding to the pitch change of the target object for the i-th time during the pitch change of the target object for the i-th time; θ0 represents the pitch angle variable reference value; wherein, the pitch angle variable reference value is obtained by the following formula:

[0134]

[0135] Among them, θ max represents the angle change rate corresponding to the maximum pitch angle during the pitch angle change of the target object; t represents the target loss duration; θ i represents the overall change rate of the pitch angle corresponding to the i-th pitch angle change; t θi Indicates the duration of the overall pitch angle change corresponding to the i-th pitch angle change.

[0136] The working principle of the above technical solution is as follows: the system first records the specific moment when the target is lost, and calculates the target loss duration based on the current time. This step provides a time reference for the subsequent analysis of the possible range of movement of the target. The target position information of the last frame before the target is lost is extracted from the radar detection data, including the latitude and longitude coordinates. This is the key data for determining the starting point of the search and scanning area. The system further analyzes the flight envelope, climb data, dive data, and turn data before the target is lost. This information reflects the dynamic behavior pattern of the target before it is lost, which is crucial for predicting its subsequent possible position changes. Based on the extracted motion characteristic information, the system calculates the azimuth and pitch parameters of the target during flight. These parameters describe the target's movement direction and attitude changes in three-dimensional space. Combined with the target loss duration, loss position information, and azimuth and pitch parameters, the system determines the azimuth and pitch range of the radar search and scanning area through a series of complex formulas. These formulas take into account factors such as the possible number of turns, turning angles, number of pitch changes, pitch change rates, and corresponding durations of the target to ensure that the search and scanning area can cover all reasonable ranges where the target may move.

[0137] The effect of the above technical solution is: by dynamically calculating the radar search and scanning area, the system can more accurately locate the possible position range of the target, reduce the invalid search area, and thus improve the search efficiency. Based on the motion characteristic information and loss duration of the target before it is lost, the system can more accurately determine the search and scanning area, reduce the possibility of misjudgment and missed judgment, and enhance the search accuracy. In military applications, quickly and accurately re-locking lost targets is crucial to maintaining control of the combat situation and implementing effective interception. The application of this technical solution can significantly improve combat effectiveness and provide strong support for combat victory. This technical solution can flexibly adjust the search strategy according to changes in target characteristics and battlefield environment to ensure the effectiveness and reliability of the radar system in different scenarios. By considering the various dynamic behaviors of the target during flight (such as turning, climbing, diving, etc.), this technical solution can better adapt to complex dynamic environments and ensure the accuracy and comprehensiveness of the search and scanning area.

[0138] The embodiment of the present invention provides a radar search system after an air combat target is lost, such as Figure 2As shown, the radar search system after the air combat target is lost includes:

[0139] The first information acquisition module is used to extract the motion characteristic information, radar characteristic information and target data information detected by the radar of the target object at the time of target loss;

[0140] A second information acquisition module is used to re-search the lost target and obtain the operation characteristic information of the carrier aircraft at the time of re-search;

[0141] The scanning center acquisition module is used to obtain the radar search scanning center based on the last frame of target information before the target is lost and the real-time carrier aircraft operation characteristic information;

[0142] The scanning area and pitch information acquisition module is used to obtain the azimuth and pitch range of the radar search scanning area according to the target loss duration, the target position information of the last frame before the target loss, and the target operation characteristic information;

[0143] The radar scanning control module is used to scan the radar beam from the scanning center outward according to the scanning angular velocity, the machine search radar scans according to the spiral, and the phased array radar scans according to the wave position.

[0144] The working principle of the above technical solution is: at the moment the target is lost, the system quickly extracts information about the target object's motion characteristics (such as speed, acceleration, heading, etc.), radar characteristics information (such as radar operating frequency, beam width, etc.) and the last frame of target data information detected by the radar (such as position coordinates, echo intensity, etc.). This information provides a key basis for subsequent searches. The system starts a re-search program for the lost target and simultaneously obtains the carrier's operating characteristics information at the time of re-search, including the carrier's position, speed, heading, and possible maneuvers. This information is crucial for determining the search scan center.

[0145] Combining the last frame of target information before the target is lost and the real-time carrier aircraft's operating characteristics information, the system calculates the most likely radar search scanning center through an algorithm. This center position is usually located on the extension line of the target's trajectory before it is lost, and is adjusted considering the real-time motion state of the carrier aircraft. According to the target loss duration, the last frame of target position information before the target is lost, and the target's operating characteristics information (such as speed, acceleration, etc.), the system further calculates the azimuth and pitch range of the radar search scanning area. This range not only covers the area where the target may move, but also takes into account the target's possible maneuvers and error range. According to the determined search scanning center and range, the radar beam scans outward from the scanning center at a predetermined scanning angular velocity. Different types of radars use different scanning methods: mechanical search radars scan along a spiral trajectory to cover a wider range of airspace; phased array radars use their ability to quickly switch beams to perform efficient scanning at preset wave positions.

[0146] The effect of the above technical solution is: by integrating historical data and real-time information, the system can more accurately predict the possible location range of the target, thereby narrowing the search area and improving the search efficiency. The in-depth analysis of the target motion characteristics and radar characteristics makes the search strategy closer to the actual situation, reduces the possibility of false alarms and missed alarms, and improves the accuracy of the search. According to the different types of radars, the corresponding scanning methods are adopted to give full play to the advantages of various types of radars and improve the compatibility and flexibility of the system. Rapidly re-locking lost targets in air combat is of great significance for maintaining control of the enemy situation and implementing effective interception, which helps to improve the overall combat effectiveness.

[0147] In summary, this technical solution achieves fast and accurate search after the loss of air combat targets by optimizing the radar search strategy, which plays a positive role in improving radar detection capabilities and combat effectiveness in modern air combat.

[0148] In one embodiment of the present invention, the first information acquisition module includes:

[0149] A motion characteristic information extraction module is used to extract and record the motion characteristic information of the target object at the time of target loss; wherein the motion characteristic information of the target object includes loss position information, flight envelope, climb data, dive data and turn data, etc.;

[0150] The time information extraction module allows users to extract the time information corresponding to the target loss;

[0151] A radar characteristic information acquisition module, used to extract radar characteristic information corresponding to the target loss moment according to the moment information corresponding to the target loss; wherein the radar characteristic information includes characteristics such as transmission power data, transmission frequency data, beam and beam scanning angular velocity;

[0152] The data information retrieval module is used to retrieve the data information corresponding to the target detected by the radar, wherein the data information corresponding to the target includes information such as longitude and latitude, velocity data and timestamp.

[0153] The working principle of the above technical solution is: at the moment of target loss, the system immediately captures and records various parameters related to the target object's motion state. These parameters include lost location information (such as longitude and latitude coordinates), flight envelope (parameter ranges such as speed, altitude and overload that describe aircraft performance), climb data (such as climb rate and climb angle), dive data (such as dive speed and dive angle) and turn data (such as turn radius and turn rate). These data reflect the dynamic behavior of the target before it is lost and are crucial to predicting its subsequent possible location.

[0154] The system accurately records the specific moment when the target is lost, including detailed time information such as year, month, day, hour, minute, and second. This step is the reference point for the subsequent extraction of radar characteristic information and target data information, ensuring the synchronization and consistency of all relevant information. According to the specific moment when the target is lost, the system traces back and extracts the working status parameters of the radar at that moment. These parameters include transmit power data (such as transmit power size), transmit frequency data (such as operating frequency range), beam characteristics (such as beam width, beam shape), and beam scanning angular velocity. This information is crucial to understanding the detection capabilities and limitations of the radar when the target is lost, and is helpful for the formulation of subsequent search strategies. The system retrieves the detection data of the last moment or the near moment before the target is lost from the radar database. These data include the target's latitude and longitude high position (position information with a timestamp accurate to seconds), speed data (such as ground speed, airspeed), timestamp information, etc. The timestamp information ensures the timeliness and accuracy of the data, allowing the system to accurately associate the detection data before and after the target is lost.

[0155] The effect of the above technical solution is: by comprehensively extracting various types of information at the moment the target is lost, including target motion characteristics, radar characteristics and detection data, it provides rich information support for subsequent search and tracking tasks. Based on the motion characteristics and radar characteristics information before the target is lost, the system can more accurately predict the possible position range and motion trajectory of the target, thereby formulating more targeted search strategies and improving search efficiency. By quickly extracting and processing relevant information, the system can quickly start the search program after the target is lost, shorten the reaction time, and provide more timely support for combat decisions. This technical solution is not only applicable to different types of radar systems, but also can flexibly adjust the search strategy according to changes in target characteristics and battlefield environment, enhancing the adaptability and robustness of the system.

[0156] In summary, this technical solution provides strong support for subsequent radar search and tracking tasks by accurately extracting and processing relevant information at the moment the target is lost, significantly improving combat effectiveness and response speed.

[0157] In one embodiment of the present invention, the second information acquisition module includes:

[0158] A re-search control module is used to start a re-search for the lost target when the target is lost;

[0159] A start time acquisition module, used for extracting the start time for re-searching the lost target when re-searching the target;

[0160] The re-search operation characteristic information acquisition module is used to retrieve the operation characteristic information of the carrier corresponding to the start time of the re-search, wherein the operation characteristic information of the carrier includes latitude and longitude position information, carrier speed information, carrier attitude information and timestamp information.

[0161] The working principle of the above technical solution is: once the radar system detects that the target is lost (i.e., it cannot continue to track the original target), the re-search mechanism is immediately triggered. This step is automatic and immediate, ensuring a quick response after the target is lost without delaying the search opportunity. The system accurately records the start time of the re-search, including detailed time information such as year, month, day, hour, minute, and second. This step provides a time reference for the subsequent retrieval of the carrier's operating characteristics information, ensuring the synchronization and accuracy of the information.

[0162] According to the start time of the re-search, the system retrieves the corresponding operating characteristic information from the carrier data source. This information includes the latitude and longitude position information of the carrier (precisely locate the position of the carrier in the air), the carrier speed information (such as ground speed, airspeed, etc., reflecting the movement rate and direction of the carrier), the carrier attitude information (such as pitch angle, roll angle, yaw angle, etc., describing the flight attitude of the carrier) and timestamp information (to ensure the timeliness and accuracy of the data). By comprehensively analyzing this information, the system can grasp the dynamic state of the carrier in real time, providing strong support for the adjustment of search strategies and target tracking.

[0163] The effect of the above technical solution is: by acquiring the operating characteristic information of the carrier aircraft in real time, the system can more accurately predict the relative position relationship between the carrier aircraft and the target, thereby optimizing the search path and strategy and improving the search efficiency. The operating characteristic information of the carrier aircraft reflects its actual state in the air. Re-searching the lost target in combination with this information can reduce the possibility of misjudgment and missed judgment and improve the accuracy of the search. After the target is lost, the re-search mechanism is quickly started and the operating characteristic information of the carrier aircraft is acquired in real time, which provides more timely and accurate information support for combat decisions and improves the combat response speed. This technical solution can dynamically adjust the search strategy according to the real-time status of the carrier aircraft, enhance the flexibility and adaptability of the system, and enable it to maintain efficient search and tracking capabilities in complex and changing battlefield environments.

[0164] In summary, this technical solution significantly improves the search efficiency, accuracy and combat response speed by acquiring the operating characteristics information of the carrier aircraft in real time and applying it to the re-search process of lost targets, while enhancing the flexibility and adaptability of the system.

[0165] In one embodiment of the present invention, the scanning center acquisition module includes:

[0166] A target object motion characteristic information retrieving module is used to extract the motion characteristic information of the target object at the moment when the target is lost; wherein the motion characteristic information of the target object at the moment when the target is lost is the target information corresponding to the last frame before the target is lost;

[0167] An operation characteristic information extraction module, used to extract the operation characteristic information of the carrier corresponding to the re-searched start time and the real-time operation characteristic information of the carrier;

[0168] The radar search scanning center determination module is used to obtain the radar search scanning center by utilizing the motion characteristic information of the target object at the time when the target is lost combined with the operation characteristic information of the carrier corresponding to the start time of the re-search and the real-time operation characteristic information of the carrier.

[0169] The working principle of the above technical solution is as follows: First, the system extracts the target information corresponding to the last frame before the target is lost from the radar detection data. This information includes the target's position (such as longitude and latitude coordinates), speed, acceleration, heading and other motion characteristic parameters. These parameters reflect the target's immediate state before it is lost and are an important basis for predicting its subsequent possible location.

[0170] The system extracts the operating characteristic information of the aircraft at the time of re-search start and in real time (i.e., current). This information includes, but is not limited to, the aircraft's latitude, longitude, altitude, speed, attitude (such as pitch angle, roll angle, yaw angle), etc. By comparing the state changes of the aircraft at the time of re-search start and in real time, the system can evaluate the dynamic behavior of the aircraft during the re-search process and provide a reference for the aircraft's perspective for determining the search scan center.

[0171] Finally, the system integrates the target motion characteristic information at the moment of target loss and the operating characteristic information of the carrier during the re-search process, and calculates the radar search scan center through an algorithm. This calculation process usually involves the prediction of the target's motion trajectory (based on the motion state before the target is lost) and the consideration of the relative position change of the carrier (based on the real-time status information of the carrier). By integrating these two aspects of information, the system can more accurately determine the search scan center and improve the efficiency and accuracy of the re-search.

[0172] The effect of the above technical solution is: by accurately predicting the possible position of the target after it is lost and combining the real-time status information of the carrier aircraft, the system can locate the search and scan center more quickly, reduce the invalid search area, and improve the search efficiency. The search and scan center determined by the comprehensive target motion characteristics and the carrier aircraft operation characteristics information is closer to the actual possible position of the target, which helps to reduce the possibility of misjudgment and missed judgment and improve the accuracy of the search. In combat scenarios such as air combat, quickly and accurately re-locking lost targets is crucial to maintaining control of the combat situation and implementing effective interception. The application of this technical solution can significantly improve combat effectiveness and provide strong support for combat victory. This technical solution is not only suitable for specific types of radar and carrier aircraft systems, but also can flexibly adjust the search strategy according to changes in target characteristics and battlefield environment, enhancing the adaptability and robustness of the system.

[0173] In one embodiment of the present invention, the scanning area and pitch information acquisition module includes:

[0174] A target loss duration acquisition module is used to extract the time information corresponding to the target loss, and obtain the target loss duration according to the time information corresponding to the target loss;

[0175] A lost position information extraction module is used to extract the lost position information of the target object corresponding to the target loss moment, wherein the lost position information of the target object corresponding to the target loss moment is the last frame of target position information before the target is lost;

[0176] a motion characteristic information retrieving module, used for extracting the flight envelope, climb data, dive data and turning data contained in the motion characteristic information of the target object at the moment of target loss; wherein the flight envelope, climb data, dive data and turning data contained in the motion characteristic information of the target object at the moment of target loss is the target operation characteristic information;

[0177] an azimuth parameter and pitch angle parameter acquisition module, used to acquire the azimuth parameter and pitch angle parameter of the target object during flight according to the flight envelope, climb data, dive data and turn data contained in the motion characteristic information of the target object at the moment of target loss;

[0178] A scanning azimuth and elevation range determination module is used to obtain the azimuth and elevation range of the radar search scanning area using the azimuth parameters and elevation parameters of the target object during flight;

[0179] The azimuth and elevation range of the radar search scanning area are obtained by the following formula:

[0180] ω=[ω last -Δω,ω last +Δω]

[0181] Where ω represents the azimuth angle range of the radar search scanning area; ω last represents the azimuth of the target object in the last frame before the target is lost; Δω represents the azimuth variation range variable; wherein, the azimuth variation range variable is obtained by the following formula:

[0182]

[0183] Where n represents the number of turns of the target object during flight contained in the turning data; ω ci represents the azimuth of the target object after the turn corresponding to the i-th turn; ω xi represents the angle between the target object and the carrier before the turn corresponding to the i-th turn; ω0 represents the azimuth angle variable reference value; ω max It indicates the azimuth change rate corresponding to the maximum azimuth that occurs during the turning process of the target object; t indicates the target loss duration; ω i represents the azimuth change rate corresponding to the i-th turn; t i represents the turning time corresponding to the i-th turn;

[0184] In addition, the elevation range of the radar search scanning area is obtained by the following formula:

[0185] θ=[θ last -Δθ,θ last +Δθ]

[0186] Where θ represents the elevation angle range of the radar search scanning area; θ last represents the pitch angle of the target object in the last frame before the target is lost; Δθ represents the pitch angle variation range variable; wherein, the pitch angle variation range variable is obtained by the following formula:

[0187]

[0188] Among them, Δθ represents the variable of pitch angle variation range; m represents the number of pitch angle occurrences during the flight of the target object contained in the motion characteristic information; θ ci represents the pitch angle corresponding to the pitch change of the target object for the i-th time; θ xi represents the pitch angle corresponding to the pitch change of the target object before the i-th pitch change; θ maxi represents the instantaneous change rate of the maximum pitch angle corresponding to the i-th pitch change of the target object; t mi represents the duration of the maximum instantaneous change rate of the pitch angle corresponding to the pitch change of the target object for the i-th time during the pitch change of the target object for the i-th time; θ0 represents the pitch angle variable reference value; wherein, the pitch angle variable reference value is obtained by the following formula:

[0189]

[0190] Among them, θ max represents the angle change rate corresponding to the maximum pitch angle during the pitch angle change of the target object; t represents the target loss duration; θ i represents the overall change rate of the pitch angle corresponding to the i-th pitch angle change; t θi Indicates the duration of the overall pitch angle change corresponding to the i-th pitch angle change.

[0191] The working principle of the above technical solution is as follows: the system first records the specific moment when the target is lost, and calculates the target loss duration based on the current time. This step provides a time reference for the subsequent analysis of the possible range of movement of the target. The target position information of the last frame before the target is lost is extracted from the radar detection data, including the latitude and longitude coordinates. This is the key data for determining the starting point of the search and scanning area. The system further analyzes the flight envelope, climb data, dive data, and turn data before the target is lost. This information reflects the dynamic behavior pattern of the target before it is lost, which is crucial for predicting its subsequent possible position changes. Based on the extracted motion characteristic information, the system calculates the azimuth and pitch parameters of the target during flight. These parameters describe the target's movement direction and attitude changes in three-dimensional space. Combined with the target loss duration, loss position information, and azimuth and pitch parameters, the system determines the azimuth and pitch range of the radar search and scanning area through a series of complex formulas. These formulas take into account factors such as the possible number of turns, turning angles, number of pitch changes, pitch change rates, and corresponding durations of the target to ensure that the search and scanning area can cover all reasonable ranges where the target may move.

[0192] The effect of the above technical solution is: by dynamically calculating the radar search and scanning area, the system can more accurately locate the possible position range of the target, reduce the invalid search area, and thus improve the search efficiency. Based on the motion characteristic information and loss duration of the target before it is lost, the system can more accurately determine the search and scanning area, reduce the possibility of misjudgment and missed judgment, and enhance the search accuracy. In military applications, quickly and accurately re-locking lost targets is crucial to maintaining control of the combat situation and implementing effective interception. The application of this technical solution can significantly improve combat effectiveness and provide strong support for combat victory. This technical solution can flexibly adjust the search strategy according to changes in target characteristics and battlefield environment to ensure the effectiveness and reliability of the radar system in different scenarios. By considering the various dynamic behaviors of the target during flight (such as turning, climbing, diving, etc.), this technical solution can better adapt to complex dynamic environments and ensure the accuracy and comprehensiveness of the search and scanning area.

[0193] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A radar search method after an air combat target is lost, characterized in that: The radar search method after the air combat target is lost includes: Extract the target object's motion characteristic information, radar characteristic information and target data information detected by the radar at the time when the target is lost; Re-search the lost target and obtain the operating characteristic information of the carrier aircraft at the time of re-search; Obtain the radar search scanning center based on the last frame of target information before the target is lost and the real-time carrier aircraft operation characteristic information; The azimuth and elevation range of the radar search scanning area are obtained according to the target loss duration, the target position information of the last frame before the target is lost, and the target operation characteristic information; The radar beam scans from the scanning center outward at the scanning angular velocity, the machine-search radar scans in a spiral, and the phased array radar scans according to the wave position.

2. The radar search method after the air combat target is lost according to claim 1, characterized in that: Extract the target object's motion characteristic information, radar characteristic information and target data information detected by radar at the time of target loss, including: Extracting and recording the motion characteristic information of the target object at the moment of target loss; wherein the motion characteristic information of the target object includes loss position information, flight envelope, climb data, dive data and number of turns; Extract the time information corresponding to the target loss; Extracting radar characteristic information corresponding to the target loss moment according to the moment information corresponding to the target loss; wherein the radar characteristic information includes transmission power data, transmission frequency data, beam and beam scanning angular velocity; The data information corresponding to the target detected by the radar is retrieved, wherein the data information corresponding to the target includes the latitude and longitude position, speed data and timestamp.

3. The radar search method after the air combat target is lost according to claim 1, characterized in that: Re-search the lost target and obtain the operating characteristics information of the carrier aircraft at the time of re-search, including: Initiate a re-search for the lost target when the target is lost; When searching for the target again, extracting the start time of searching again for the lost target; The operation characteristic information of the carrier corresponding to the start time of the re-search is retrieved, wherein the operation characteristic information of the carrier includes latitude and longitude position information, carrier speed information, carrier attitude information and a timestamp.

4. The radar search method after the air combat target is lost according to claim 1, characterized in that: According to the last frame of target information before the target is lost and the real-time carrier aircraft operation characteristic information, the radar search scanning center is obtained, including: Extracting motion characteristic information of the target object at the time when the target is lost; wherein the motion characteristic information of the target object at the time when the target is lost is the target information corresponding to the last frame before the target is lost; Extracting the operating characteristic information of the carrier corresponding to the re-searched start time and the real-time operating characteristic information of the carrier; The radar search scanning center is obtained by utilizing the motion characteristic information of the target object at the time when the target is lost, combining the operation characteristic information of the carrier aircraft corresponding to the start time of the re-search and the real-time operation characteristic information of the carrier aircraft.

5. The radar search method after the air combat target is lost according to claim 1, characterized in that: The azimuth and elevation range of the radar search scanning area are obtained based on the target loss duration, the target position information of the last frame before the target is lost, and the target operation characteristic information, including: Extracting the time information corresponding to the target loss, and obtaining the target loss duration according to the time information corresponding to the target loss; Extracting the lost position information of the target object corresponding to the target loss moment, wherein the lost position information of the target object corresponding to the target loss moment is the last frame of target position information before the target is lost; Extracting the flight envelope, climb data, dive data and turn data contained in the motion characteristic information of the target object at the moment of target loss; wherein the flight envelope, climb data, dive data and turn data contained in the motion characteristic information of the target object at the moment of target loss is the target operation characteristic information; Acquiring azimuth angle parameters and pitch angle parameters of the target object during flight according to the flight envelope, climb data, dive data and turn data contained in the motion characteristic information of the target object at the moment of target loss; The azimuth and elevation parameters of the target object during flight are used to obtain the azimuth and elevation range of the radar search scanning area; The azimuth and elevation range of the radar search scanning area are obtained by the following formula: ω=[ω last -Look, oh last +See] Where ω represents the azimuth angle range of the radar search scanning area; ω last represents the azimuth of the target object in the last frame before the target is lost; Δω represents the azimuth variation range variable; wherein, the azimuth variation range variable is obtained by the following formula: Where n represents the number of turns of the target object during flight contained in the turning data; ω ci represents the azimuth of the target object after the turn corresponding to the i-th turn; ω xi represents the angle between the target object and the carrier before the turn corresponding to the i-th turn; ω0 represents the azimuth angle variable reference value; ω max It indicates the azimuth change rate corresponding to the maximum azimuth that occurs during the turning process of the target object; t indicates the target loss duration; ω i represents the azimuth change rate corresponding to the i-th turn; t i represents the turning time corresponding to the i-th turn; In addition, the elevation range of the radar search scanning area is obtained by the following formula: θ=[θ last -Δθ,θ last +Δθ] Where θ represents the elevation angle range of the radar search scanning area; θ last represents the pitch angle of the target object in the last frame before the target is lost; Δθ represents the pitch angle variation range variable; wherein, the pitch angle variation range variable is obtained by the following formula: Among them, Δθ represents the variable of pitch angle variation range; m represents the number of pitch angle occurrences during the flight of the target object contained in the motion characteristic information; θ ci represents the pitch angle corresponding to the pitch change of the target object for the i-th time; θ xi represents the pitch angle corresponding to the pitch change of the target object before the i-th pitch change; θ maxi represents the instantaneous change rate of the maximum pitch angle corresponding to the i-th pitch change of the target object; t mi represents the duration of the maximum instantaneous change rate of the pitch angle corresponding to the pitch change of the target object for the i-th time during the pitch change of the target object for the i-th time; θ0 represents the pitch angle variable reference value; wherein, the pitch angle variable reference value is obtained by the following formula: Among them, θ max represents the angle change rate corresponding to the maximum pitch angle during the pitch angle change of the target object; t represents the target loss duration; θ i represents the overall change rate of the pitch angle corresponding to the i-th pitch angle change; t θi Indicates the duration of the overall pitch angle change corresponding to the i-th pitch angle change.

6. A radar search system after an air combat target is lost, characterized in that: The radar search system after the air combat target is lost includes: The first information acquisition module is used to extract the motion characteristic information, radar characteristic information and target data information detected by the radar of the target object at the time of target loss; A second information acquisition module is used to re-search the lost target and obtain the operation characteristic information of the carrier aircraft at the time of re-search; The scanning center acquisition module is used to obtain the radar search scanning center based on the last frame of target information before the target is lost and the real-time carrier aircraft operation characteristic information; The scanning area and pitch information acquisition module is used to obtain the azimuth and pitch range of the radar search scanning area according to the target loss duration, the target position information of the last frame before the target loss, and the target operation characteristic information; The radar scanning control module is used to scan the radar beam from the scanning center outward according to the scanning angular velocity, the machine search radar scans according to the spiral, and the phased array radar scans according to the wave position.

7. The radar search system after the air combat target is lost according to claim 6, characterized in that: The first information acquisition module includes: A motion characteristic information extraction module, used to extract and record the motion characteristic information of the target object at the moment of target loss; wherein the motion characteristic information of the target object includes loss position information, flight envelope, climb data, dive data and turn data; The time information extraction module allows users to extract the time information corresponding to the target loss; A radar characteristic information acquisition module, used to extract radar characteristic information corresponding to the target loss moment according to the moment information corresponding to the target loss; wherein the radar characteristic information includes transmission power data, transmission frequency data, beam and beam scanning angular velocity; The data information retrieval module is used to retrieve the data information corresponding to the target detected by the radar, wherein the data information corresponding to the target includes the longitude and latitude position, speed data and timestamp.

8. The radar search system after the air combat target is lost according to claim 6, characterized in that: The second information acquisition module includes: A re-search control module is used to start a re-search for the lost target when the target is lost; A start time acquisition module, used for extracting the start time for re-searching the lost target when re-searching the target; The re-search operation characteristic information acquisition module is used to retrieve the operation characteristic information of the carrier corresponding to the start time of the re-search, wherein the operation characteristic information of the carrier includes latitude and longitude position information, carrier speed information, carrier attitude information and timestamp.

9. The radar search system after the air combat target is lost according to claim 6, characterized in that: The scanning center acquisition module includes: A target object motion characteristic information retrieving module is used to extract the motion characteristic information of the target object at the moment when the target is lost; wherein the motion characteristic information of the target object at the moment when the target is lost is the target information corresponding to the last frame before the target is lost; An operation characteristic information extraction module, used to extract the operation characteristic information of the carrier corresponding to the re-searched start time and the real-time operation characteristic information of the carrier; The radar search scanning center determination module is used to obtain the radar search scanning center by utilizing the motion characteristic information of the target object at the time when the target is lost combined with the operation characteristic information of the carrier corresponding to the start time of the re-search and the real-time operation characteristic information of the carrier.

10. The radar search system after the air combat target is lost according to claim 6, characterized in that: The scanning area and pitch information acquisition module includes: A target loss duration acquisition module is used to extract the time information corresponding to the target loss, and obtain the target loss duration according to the time information corresponding to the target loss; A lost position information extraction module is used to extract the lost position information of the target object corresponding to the target loss moment, wherein the lost position information of the target object corresponding to the target loss moment is the last frame of target position information before the target is lost; a motion characteristic information retrieving module, used for extracting the flight envelope, climb data, dive data and turning data contained in the motion characteristic information of the target object at the moment of target loss; wherein the flight envelope, climb data, dive data and turning data contained in the motion characteristic information of the target object at the moment of target loss is the target operation characteristic information; an azimuth parameter and pitch angle parameter acquisition module, used to acquire the azimuth parameter and pitch angle parameter of the target object during flight according to the flight envelope, climb data, dive data and turn data contained in the motion characteristic information of the target object at the moment of target loss; A scanning azimuth and elevation range determination module is used to obtain the azimuth and elevation range of the radar search scanning area using the azimuth parameters and elevation parameters of the target object during flight; The azimuth and elevation range of the radar search scanning area are obtained by the following formula: ω=[ω last -Look, oh last +See] Where ω represents the azimuth angle range of the radar search scanning area; ω last represents the azimuth of the target object in the last frame before the target is lost; Δω represents the azimuth variation range variable; wherein, the azimuth variation range variable is obtained by the following formula: Where n represents the number of turns of the target object during flight contained in the turning data; ω ci represents the azimuth of the target object after the turn corresponding to the i-th turn; ω xi represents the angle between the target object and the carrier before the turn corresponding to the i-th turn; ω0 represents the azimuth angle variable reference value; ω max It indicates the azimuth change rate corresponding to the maximum azimuth that occurs during the turning process of the target object; t indicates the target loss duration; ω i represents the azimuth change rate corresponding to the i-th turn; t i represents the turning time corresponding to the i-th turn; In addition, the elevation range of the radar search scanning area is obtained by the following formula: θ=[θ last -Δθ,θ last +Δθ] Where θ represents the elevation angle range of the radar search scanning area; θ last represents the pitch angle of the target object in the last frame before the target is lost; Δθ represents the pitch angle variation range variable; wherein, the pitch angle variation range variable is obtained by the following formula: Among them, Δθ represents the variable of pitch angle variation range; m represents the number of pitch angle occurrences during the flight of the target object contained in the motion characteristic information; θ ci represents the pitch angle corresponding to the pitch change of the target object for the i-th time; θ xi represents the pitch angle corresponding to the pitch change of the target object before the i-th pitch change; θ maxi represents the instantaneous change rate of the maximum pitch angle corresponding to the i-th pitch change of the target object; t mi represents the duration of the maximum instantaneous change rate of the pitch angle corresponding to the pitch change of the target object for the i-th time during the pitch change of the target object for the i-th time; θ0 represents the pitch angle variable reference value; wherein, the pitch angle variable reference value is obtained by the following formula: Among them, θ max represents the angle change rate corresponding to the maximum pitch angle during the pitch angle change of the target object; t represents the target loss duration; θ i represents the overall change rate of the pitch angle corresponding to the i-th pitch angle change; t θi Indicates the duration of the overall pitch angle change corresponding to the i-th pitch angle change.

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