CN116026189A - Guidance method, system, medium and equipment for air defense of cluster target tail end - Google Patents

Abstract

The invention provides a guidance method, a system, a medium and equipment for air defense of a cluster target end, which comprise the following steps: step 1: performing search tasks in an air defense responsibility airspace by using high-gain beams by adopting multi-functional radar full-array cooperation, capturing cluster targets, measuring quantity, angle, distance and speed parameters, and obtaining a cluster threat airspace distribution situation; step 2: according to the cluster threat airspace distribution situation, calculating the optimal interception cluster quantity K _now Determining a corresponding interception cluster division scheme, so that targets in the cluster belong to only one interception cluster; step 3: splitting an array into K _now The subarrays independently generate regional level wide beams, dynamically track the interception clusters and simultaneously provide continuous guidance irradiation for the interception bomb. The invention avoids the simultaneous multi-target channel of the air defense systemAnd the limitation is realized, the requirement on target tracking precision can be reduced, and the guidance response time is shortened.

Description

Guidance method, system, medium and equipment for air defense of cluster target tail end

Technical Field

The invention relates to the technical field of guidance detection, in particular to a guidance method, a system, a medium and equipment for air defense of a cluster target tail end.

Background

Terminal air defense is a key ring of air defense, and is the 'last defense line' of air combat. In recent years, a cluster striking mode represented by unmanned aerial vehicle formation striking and rocket projectile shooting attack has become a novel threat facing terminal anti-air combat, and an omnidirectional saturation threat is generated for defending the combat. Therefore, the terminal air defense needs to have strong multi-target guidance detection capability at the same time so as to prevent the utilization of the number advantage of the incoming targets.

Patent document CN108460509B (application number: CN 201711384688.8) discloses a method and a system for optimizing and controlling the air-defense resource scheduling of a warship team in a dynamic environment, which are used for evaluating the disturbance type and intensity in the task execution process and realizing the optimizing and controlling the air-defense resource scheduling of the warship team by utilizing the combination of global static optimization and local dynamic adjustment according to the disturbance type and intensity.

From the aspect of guidance, the radio instruction guidance is highly dependent on the performance of guidance radar, and cannot provide accurate guidance for a large number of intercepted weapons at the same time; active radar guidance has limited acting distance to a weak characteristic target, and meanwhile, the cost of the active radar guidance is still high in a short period; the semi-active radar guidance system has limited multi-target capability, and is difficult to consider the quantity and the precision; the infrared guidance system is not suitable for slow flight threat, and the environment has a larger influence on the performance.

Therefore, in order to deal with the threat of the omni-directional saturation attack of the terminal cluster air defense, a high-capacity, fast-response and strong-reliability guidance detection method needs to be provided, and the terminal air defense system is supported to form large-scale countermeasure capability.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a guidance method, a system, a medium and equipment for preventing the tail end of a cluster target from being empty.

The guidance method for the air defense of the tail end of the cluster target provided by the invention comprises the following steps:

step 1: performing search tasks in an air defense responsibility airspace by using high-gain beams by adopting multi-functional radar full-array cooperation, capturing cluster targets, measuring quantity, angle, distance and speed parameters, and obtaining a cluster threat airspace distribution situation;

step 2: according to the cluster threat airspace distribution situation, calculating the optimal interception cluster quantity K _now Determining a corresponding interception cluster division scheme, so that targets in the cluster belong to only one interception cluster;

step 3: splitting an array into K _now The subarrays independently generate regional level wide beams, dynamically track the interception clusters and simultaneously provide continuous guidance irradiation for the interception bomb.

Preferably, the step 1 includes:

step 1.1: after the multifunctional radar obtains the range of the air defense responsibility area, starting the full array resource, setting the beam as a high-gain narrow beam, and pointing the beam to the initial coordinate of the ground coordinate system;

step 1.2: the method comprises the steps that A period echo accumulation and moving target detection processing are completed in a multifunctional radar, the energy distribution of radar echo in the distance and speed dimensions is obtained, and the value of A needs to be satisfied:

and->

Wherein T is _r For pulse repetition period r _w Is the width of the doorDegree, v _tr For the radial velocity of the target relative to the radar v _tt For tangential velocity of the target relative to the radar, R _min For minimum skew of target to radar, w _full Is the beam width;

step 1.3: performing target detection on the energy distribution through a multifunctional radar, and extracting and storing angle, distance and speed information of a target if the target exists; if the target does not exist, directly entering the step 1.4;

step 1.4: switching the search angle for the multifunctional radar, repeatedly executing the steps 1.2 and 1.3, searching the pointing angle, traversing the pitching direction firstly, traversing the azimuth direction later, covering all air defense responsible airspace, and enabling the interval between different pointing angles to be not more than 3dB wave beam width w under full array cooperation _full 。

Preferably, the step 2 includes:

step 2.1: setting the number K of interception clusters, and selecting any K different targets c in the clusters _k As the initial cluster center

k=1, 2, …, K, the angle between the target direction and the ground is the pitch angle θ, and the angle between the target direction and the antenna normal is the azimuth angle +.>

Step 2.2: calculating included angles alpha from all N targets of the cluster to the centers of K clusters _n,k For each target, selecting the cluster center with the smallest included angle, and recording the classification scheme P of the target _n,K And its angle value min (alpha _n,K ) N=1, 2, …, N is the end cluster threat number;

step 2.3: calculating the central coordinates of the targets in K clusters as updated central coordinates

Calculating an included angle delta alpha c before and after cluster center coordinate updating, and if delta alpha c is larger than a set threshold th, continuing to execute the step 2.2; if Deltaαc is less thanSetting threshold th, center coordinates are stored>

Classification scheme P _n,K And an included angle value min (alpha _n,K )；

Step 2.4: repeatedly executing the step 2.2 and the step 2.3, so that the number K of interception clusters covers the range of the multi-target tracking number while the multi-functional radar is covered;

step 2.5: according to the stored data, respectively calculating maximum value alpha_max of N intra-cluster included angles corresponding to different interception cluster numbers K _k To determine the number K of the end air defense interception clusters _now Central coordinates of interception cluster

And corresponding target partitioning scheme P _now ，K _now In meeting->

Taking a minimum value under the condition that +.>

For the 3dB wave beam width of the multi-functional radar subarray level, the cluster target classification scheme P for the end defense is made later _now To intercept the number K of clusters _now Corresponding scheme->

Preferably, the step 3 includes:

step 3.1: determining the number of array elements of the subarray as

Wherein M is the number of array elements of the full array, K _now For the number of the end air defense interception clusters, [ - ]]Representing a zero-rounding operator;

step 3.2: sub-array acquisition of respective intercept cluster center coordinates

As the initial direction of the tracking wave beam, the working frequency point is determined at the same time, so that the working frequency ranges of all subarrays are not overlapped;

step 3.3: the subarray adjusts beam direction, 1 sum beam and 2 difference beams are generated, distance and speed parameter measurement is completed based on sum beam data, amplitude comparison single pulse angle measurement is completed based on sum and difference three beam data, and the direction of the sum and difference three beams is dynamically adjusted according to an angle measurement result, so that a tracking beam always covers an interception cluster airspace range;

step 3.4: the interception bomb guide head adopts a semi-active radar guide body, passively receives a direct wave signal from a multifunctional radar and an echo signal reflected by a target, and obtains the center of an interception cluster and guide parameters of a specific interception target after processing;

step 3.5: and (3) continuously executing the steps 3.3 and 3.4 by the multifunctional radar and interception bomb guide head in the tracking guidance process until the interception combat is completed.

The invention provides a guidance system for preventing air at the tail end of a cluster target, which comprises the following components:

module M1: performing search tasks in an air defense responsibility airspace by using high-gain beams by adopting multi-functional radar full-array cooperation, capturing cluster targets, measuring quantity, angle, distance and speed parameters, and obtaining a cluster threat airspace distribution situation;

module M2: according to the cluster threat airspace distribution situation, calculating the optimal interception cluster quantity K _now Determining a corresponding interception cluster division scheme, so that targets in the cluster belong to only one interception cluster;

module M3: splitting an array into K _now The subarrays independently generate regional level wide beams, dynamically track the interception clusters and simultaneously provide continuous guidance irradiation for the interception bomb.

Preferably, the module M1 comprises:

module M1.1: after the multifunctional radar obtains the range of the air defense responsibility area, starting the full array resource, setting the beam as a high-gain narrow beam, and pointing the beam to the initial coordinate of the ground coordinate system;

moduleM1.2: the method comprises the steps that A period echo accumulation and moving target detection processing are completed in a multifunctional radar, the energy distribution of radar echo in the distance and speed dimensions is obtained, and the value of A needs to be satisfied:

and->

Wherein T is _r For pulse repetition period r _w For distance gate width v _tr For the radial velocity of the target relative to the radar v _tt For tangential velocity of the target relative to the radar, R _min For minimum skew of target to radar, w _full Is the beam width;

module M1.3: performing target detection on the energy distribution through a multifunctional radar, and extracting and storing angle, distance and speed information of a target if the target exists; if the target does not exist, directly entering a module M1.4;

module M1.4: the method comprises the steps of switching search angles for the multifunctional radar, repeatedly executing a module M1.2 and a module M1.3, searching the pointing angles, traversing the pitching direction firstly, traversing the azimuth direction later, covering all air-defense responsible airspace, and enabling the interval between different pointing angles to be not more than 3dB wave beam width w under full array cooperation _full 。

Preferably, the module M2 comprises:

module M2.1: setting the number K of interception clusters, and selecting any K different targets c in the clusters _k As the initial cluster center

k=1, 2, …, K, the angle between the target direction and the ground is the pitch angle θ, and the angle between the target direction and the antenna normal is the azimuth angle +.>

Module M2.2: calculating included angles alpha from all N targets of the cluster to the centers of K clusters _n,k For each target, respectively selecting the cluster center with the smallest included angle with the target,recording the classification scheme P of the object _n,K And its angle value min (alpha _n,K ) N=1, 2, …, N is the end cluster threat number;

module M2.3: calculating the central coordinates of the targets in K clusters as updated central coordinates

Calculating an included angle delta alpha c before and after cluster center coordinate updating, and if delta alpha c is larger than a set threshold th, continuing to execute the module M2.2; if Δαc is smaller than the set threshold th, the center coordinates +.>

Classification scheme P _n,K And an included angle value min (alpha _n,K )；

Module M2.4: repeatedly executing the module M2.2 and the module M2.3 to enable the number K of interception clusters to cover the range of the multi-target tracking number while the multi-functional radar is in use;

module M2.5: according to the stored data, respectively calculating maximum value alpha_max of N intra-cluster included angles corresponding to different interception cluster numbers K _k To determine the number K of the end air defense interception clusters _now Central coordinates of interception cluster

And corresponding target partitioning scheme P _now ，K _now In meeting->

Taking a minimum value under the condition that +.>

For the 3dB wave beam width of the multi-functional radar subarray level, the cluster target classification scheme P for the end defense is made later _now To intercept the number K of clusters _now Corresponding scheme->

Preferably, the module M3 includes:

module M3.1: determining the number of array elements of the subarray as

Wherein M is the number of array elements of the full array, K _now For the number of the end air defense interception clusters, [ - ]]Representing a zero-rounding operator;

module M3.2: sub-array acquisition of respective intercept cluster center coordinates

As the initial direction of the tracking wave beam, the working frequency point is determined at the same time, so that the working frequency ranges of all subarrays are not overlapped;

module M3.3: the subarray adjusts beam direction, 1 sum beam and 2 difference beams are generated, distance and speed parameter measurement is completed based on sum beam data, amplitude comparison single pulse angle measurement is completed based on sum and difference three beam data, and the direction of the sum and difference three beams is dynamically adjusted according to an angle measurement result, so that a tracking beam always covers an interception cluster airspace range;

module M3.4: the interception bomb guide head adopts a semi-active radar guide body, passively receives a direct wave signal from a multifunctional radar and an echo signal reflected by a target, and obtains the center of an interception cluster and guide parameters of a specific interception target after processing;

module M3.5: the multifunctional radar and interception bomb guide head in the tracking guidance process continuously executes the module M3.3 and the module M3.4 until the interception combat is completed.

According to the invention, a computer readable storage medium is provided, wherein the computer program is stored, and when being executed by a processor, the computer program realizes the steps of the guidance method for the end of a cluster target to prevent air traffic.

The electronic equipment provided by the invention comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the computer program realizes the steps of the guidance method for the end air defense of the cluster target when being executed by the processor.

Compared with the prior art, the invention has the following beneficial effects:

(1) The beam reconstruction capability of the array antenna is fully exerted, and the beam width is flexibly adjusted by integrating and splitting the array, so that the method can adapt to the coverage requirements of different stages of guided detection.

(2) The cluster targets are simplified and processed by taking the cluster as the minimum unit in the tracking and guiding process, so that the integral tracking and guiding of the cluster targets can be provided, and the limitation of multiple target channels while an air defense system is avoided.

(3) The radar can realize the integration of the search, tracking and guidance functions, simplify the construction of combat equipment, reduce combat information nodes and contribute to the improvement of the response speed of the air defense system.

(4) Through the working frequency point binding, a large number of interception bombs can be rapidly specified, and the method has the advantage of expanding the interception scale.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a flow chart of a cluster target end air defense method of the present invention;

FIG. 2 is a schematic diagram of a ground coordinate system employed in the present invention;

FIG. 3 is a complete array structure of the multifunctional radar in the embodiment;

FIG. 4 is a pitch search schematic of example step 1;

FIG. 5 is a schematic diagram of the azimuth search of embodiment step 1;

FIG. 6 is a cluster threat situation map captured by an embodiment multi-function radar;

FIG. 7 is a graph showing the relationship between the maximum intra-cluster included angle and the subarray beam width according to the number K of the interception clusters;

FIG. 8 is a target partitioning scheme for an embodiment intercepting the number of clusters;

FIG. 9 is a diagram of an embodiment multi-functional radar subarray partitioning scheme;

fig. 10 is a diagram illustrating the coverage of a cluster target by a wide beam.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.

Example 1:

as shown in fig. 1, the invention discloses a guidance method for preventing a cluster target end from being empty, which comprises the following key steps: the multi-functional radar full array cooperates, realize the perception of wide area situation; the multi-functional radar prefers the number of interception clusters, and determines an interception cluster division scheme; the multifunctional radar subarray independently tracks and guides, and supports the interception bomb guide head to approach and detect.

For ease of calculation and description, the present invention uses a ground coordinate system as shown in fig. 2. The ground coordinate system takes the multifunctional radar as a coordinate origin, the included angle between the target pointing direction and the ground is a pitch angle theta, and the included angle between the target pointing direction and the normal direction of the antenna is an azimuth angle

The azimuth angle is a positive direction along the clockwise direction, and is a coordinate system referred when acquiring the cluster threat situation and dividing the blocking cluster scheme;

the multifunctional radar array of this embodiment adopts a 486-element triangular grid structure, and the intervals between the elements are 0.5λ (wavelength), as shown in fig. 3. The embodiment end cluster threat number n=300, and the guidance method includes the following steps:

step 1: the multi-functional radar full array cooperates, use the high-gain wave beam to carry out the search task in the space domain of air defense responsibility, catch the cluster goal and measure quantity, angle, distance, speed parameter with high accuracy, produce the situation map of the cluster threat, including the following substeps:

step 1.1: the range of the air defense responsibility area of the embodiment obtained by the multifunctional radar is a ground coordinate system theta=5-90 degrees,

the distance R=6 km-10 km, then the full array resource is enabled and the beam is set as a high gain narrow beam pointing to the initial coordinates of the ground coordinate system +.>

Step 1.2: the multifunctional radar finishes the echo accumulation and moving target detection processing of A periods, and obtains the energy distribution of radar echoes in the distance and speed dimensions. To reduce the processing loss, the value of A needs to satisfy

And->

Wherein T is _r For pulse repetition period r _w For distance gate width v _tr For the radial velocity of the target relative to the radar v _tt For tangential velocity of the target relative to the radar, R _min For minimum skew of target to radar, w _full Is the beam width.

The radar parameter settings in this embodiment are as in table 1:

according to the formula of this step, the value of a in this embodiment is 128.

Step 1.3: the multifunctional radar detects targets according to the energy distribution, and if targets exist, the angle, distance and speed information of the targets are extracted and stored; if the target does not exist, directly entering the step 1.4;

step 1.4: the multifunctional radar switches the search angle and repeatedly executes the steps 1.2 and 1.3The course searches all air defense responsible airspace with the pointing angle traversing the pitching direction from 5 degrees to 90 degrees firstly and then traversing the azimuth direction from-90 degrees to 90 degrees, as shown in fig. 4 and 5, the interval between different pointing angles is not more than 3dB wave beam width w under the cooperation of the full array _full . In this embodiment, after the search of the air defense responsible airspace is completed, a cluster threat situation is obtained, as shown in fig. 6, and the color depth is used to represent the target distance parameter.

Step 2: the multifunctional radar calculates the number K of optimal interception clusters according to the cluster threat airspace distribution situation _now And determining a corresponding interception cluster division scheme, so that targets in the cluster belong to only one interception cluster, wherein the method comprises the following substeps:

step 2.1: setting the number K of interception clusters, and selecting any K different targets in the clusters as initial cluster centers

k＝1,2,…,K；

Step 2.2: calculating included angles alpha from all 300 targets of the cluster to the centers of K clusters _n,k N=1, 2, …,300, k=1, 2, …, K, for each target, selecting the cluster center with the smallest included angle (i.e. classification is completed in K classes) respectively, and recording the classification scheme P of the target _n,K N=1, 2, …,300 and their angle value min (α) with the center of the corresponding cluster _n,K )，n＝1,2,…,300；

Step 2.3: calculating the central coordinates of the targets in K clusters as updated central coordinates

Calculating an included angle delta alpha c before and after cluster center coordinate updating, and if delta alpha c is larger than a set threshold th, continuing to execute the step 2.2; if Δαc is smaller than the set threshold th, the center coordinates +.>

Classification scheme P _n,K And an included angle value min (alpha _n,K ). Wherein, the threshold th is generally smaller than the average included angle value of the cluster targets;

step 2.4: repeatedly executing the steps 2.2 and 2.3, so that the number K of interception clusters covers the range of the multi-target tracking number while the multi-functional radar of the embodiment, wherein K=1, 2, … and 10;

step 2.5: according to the data stored in the steps, respectively calculating the maximum value alpha_max of 300 intra-cluster included angles corresponding to the number K of different interception clusters _k K=1, 2, …,10 to determine the number K of the end air defense interception clusters _now Central coordinates of interception cluster

And corresponding target partitioning scheme P _now ；K _now In meeting->

Taking a minimum value under the condition that +.>

3dB beam width is the level of the multifunctional radar subarrays; subsequently, the cluster target classification scheme P for defending the tail end _now To intercept the number K of clusters _now Corresponding scheme->

The number of blocking clusters K in this embodiment _now Taking 6, as shown in FIG. 7, the central coordinates of the corresponding interception clusters are shown in Table 2, and the corresponding interception cluster division scheme +.>

As shown in fig. 8.

Example intercept cluster center coordinates are as in table 2:

step 3: the multifunctional radar splits the array into K _now The subarray independently generates regional level wide beams, dynamically tracks the interception clusters, simultaneously provides continuous guidance irradiation for the interception bomb, and adopts a half interception bomb guide headThe active radar guidance system acquires the center of an interception cluster and specific interception target guidance parameters, and comprises the following substeps:

step 3.1: determining the number of array elements of the subarray as

Wherein M is the number of array elements of the whole array, []Representing a zero-rounding operator; number of horizontal and vertical array elements C of subarray _x 、C _y By->

And min (C) _x +C _y ) Commonly constrained and determined, C in this embodiment _x 、C _y The values are 9, and the subarray division form is shown in figure 9;

step 3.2: sub-array acquisition of respective intercept cluster center coordinates

As the initial direction of the tracking wave beam, the working frequency point is determined at the same time, so that the working frequency ranges of all subarrays are not overlapped;

step 3.3: the subarray adjusts beam direction, generates 1 combined beam and 2 difference beams, completes measurement of distance and speed parameters based on sum beam data, and completes measurement of amplitude comparison single pulse angle based on sum and difference beam data; the direction of the sum and difference three beams is dynamically adjusted according to the angle measurement result, so that the tracking beam always covers the airspace range of the interception cluster, as shown in fig. 10;

step 3.4: the interception bomb guide head adopts a semi-active radar guide body, passively receives a direct wave signal from a multifunctional radar and an echo signal reflected by a target, and obtains the center of an interception cluster and guide parameters of a specific interception target after processing;

step 3.5: and (3) continuously executing the steps 3.3 and 3.4 by the multifunctional radar and interception bomb guide head in the tracking guidance process until the interception combat is completed.

Example 2:

the invention also provides a guidance system for the end of the cluster target, which can be realized by executing the flow steps of the guidance method for the end of the cluster target, namely, the guidance method for the end of the cluster target can be understood as a preferred implementation mode of the guidance system for the end of the cluster target by a person skilled in the art.

The invention provides a guidance system for preventing air at the tail end of a cluster target, which comprises the following components: module M1: performing search tasks in an air defense responsibility airspace by using high-gain beams by adopting multi-functional radar full-array cooperation, capturing cluster targets, measuring quantity, angle, distance and speed parameters, and obtaining a cluster threat airspace distribution situation; module M2: according to the cluster threat airspace distribution situation, calculating the optimal interception cluster quantity K _now Determining a corresponding interception cluster division scheme, so that targets in the cluster belong to only one interception cluster; module M3: splitting an array into K _now The subarrays independently generate regional level wide beams, dynamically track the interception clusters and simultaneously provide continuous guidance irradiation for the interception bomb.

The module M1 includes: module M1.1: after the multifunctional radar obtains the range of the air defense responsibility area, starting the full array resource, setting the beam as a high-gain narrow beam, and pointing the beam to the initial coordinate of the ground coordinate system; module M1.2: the method comprises the steps that A period echo accumulation and moving target detection processing are completed in a multifunctional radar, the energy distribution of radar echo in the distance and speed dimensions is obtained, and the value of A needs to be satisfied:

and->

Wherein T is _r For pulse repetition period r _w For distance gate width v _tr For the radial velocity of the target relative to the radar v _tt For tangential velocity of the target relative to the radar, R _min For minimum skew of target to radar, w _full Is the beam width; module M1.3: the energy distribution is subjected to target detection through a multifunctional radar, and if a target exists, the target is detectedExtracting and storing the angle, distance and speed information; if the target does not exist, directly entering a module M1.4; module M1.4: the method comprises the steps of switching search angles for the multifunctional radar, repeatedly executing a module M1.2 and a module M1.3, searching the pointing angles, traversing the pitching direction firstly, traversing the azimuth direction later, covering all air-defense responsible airspace, and enabling the interval between different pointing angles to be not more than 3dB wave beam width w under full array cooperation _full 。

The module M2 includes: module M2.1: setting the number K of interception clusters, and selecting any K different targets c in the clusters _k As the initial cluster center

k=1, 2, …, K, the angle between the target direction and the ground is the pitch angle θ, and the angle between the target direction and the antenna normal is the azimuth angle +.>

Module M2.2: calculating included angles alpha from all N targets of the cluster to the centers of K clusters _n,k For each target, selecting the cluster center with the smallest included angle, and recording the classification scheme P of the target _n,K And its angle value min (alpha _n,K ) N=1, 2, …, N is the end cluster threat number; module M2.3: calculating the center coordinates of the K intra-cluster objects as updated center coordinates +.>

Calculating an included angle delta alpha c before and after cluster center coordinate updating, and if delta alpha c is larger than a set threshold th, continuing to execute the module M2.2; if Δαc is smaller than the set threshold th, the center coordinates +.>

Classification scheme P _n,K And an included angle value min (alpha _n,K ) The method comprises the steps of carrying out a first treatment on the surface of the Module M2.4: repeatedly executing the module M2.2 and the module M2.3 to enable the number K of interception clusters to cover the range of the multi-target tracking number while the multi-functional radar is in use; module M2.5: according to the stored data, respectively calculating maximum values of N intra-cluster included angles corresponding to the number K of different interception clustersα_max _k To determine the number K of the end air defense interception clusters _now Blocking cluster center coordinates +.>

And corresponding target partitioning scheme P _now ，K _now In meeting->

Taking a minimum value under the condition that +.>

For the 3dB wave beam width of the multi-functional radar subarray level, the cluster target classification scheme P for the end defense is made later _now To intercept the number K of clusters _now Corresponding scheme->

The module M3 includes: module M3.1: determining the number of array elements of the subarray as

Wherein M is the number of array elements of the full array, K _now For the number of the end air defense interception clusters, [ - ]]Representing a zero-rounding operator; module M3.2: sub-array acquires the center coordinates of the respective blocking clusters +.>

As the initial direction of the tracking wave beam, the working frequency point is determined at the same time, so that the working frequency ranges of all subarrays are not overlapped; module M3.3: the subarray adjusts beam direction, 1 sum beam and 2 difference beams are generated, distance and speed parameter measurement is completed based on sum beam data, amplitude comparison single pulse angle measurement is completed based on sum and difference three beam data, and the direction of the sum and difference three beams is dynamically adjusted according to an angle measurement result, so that a tracking beam always covers an interception cluster airspace range; module M3.4: the interception bomb guide head adopts a semi-active radar guide body, and passively receives a direct wave signal from a multifunctional radar and an echo signal reflected by a targetObtaining the guidance parameters of the interception cluster center and the specific interception targets after processing; module M3.5: the multifunctional radar and interception bomb guide head in the tracking guidance process continuously executes the module M3.3 and the module M3.4 until the interception combat is completed.

Those skilled in the art will appreciate that the systems, apparatus, and their respective modules provided herein may be implemented entirely by logic programming of method steps such that the systems, apparatus, and their respective modules are implemented as logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers, etc., in addition to the systems, apparatus, and their respective modules being implemented as pure computer readable program code. Therefore, the system, the apparatus, and the respective modules thereof provided by the present invention may be regarded as one hardware component, and the modules included therein for implementing various programs may also be regarded as structures within the hardware component; modules for implementing various functions may also be regarded as being either software programs for implementing the methods or structures within hardware components.

The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.

Claims (10)

1. A guidance method for air defense of a cluster target end, comprising:

step 1: performing search tasks in an air defense responsibility airspace by using high-gain beams by adopting multi-functional radar full-array cooperation, capturing cluster targets, measuring quantity, angle, distance and speed parameters, and obtaining a cluster threat airspace distribution situation;

step 2: according to the cluster threat airspace distribution situation, calculating the optimal interception cluster quantity K _now Determining a corresponding interception cluster division scheme, so that targets in the cluster belong to only one interception cluster;

step 3: splitting an arrayFor K _now The subarrays independently generate regional level wide beams, dynamically track the interception clusters and simultaneously provide continuous guidance irradiation for the interception bomb.

2. The guidance method for clustered target end air defense according to claim 1, wherein step 1 comprises:

step 1.1: after the multifunctional radar obtains the range of the air defense responsibility area, starting the full array resource, setting the beam as a high-gain narrow beam, and pointing the beam to the initial coordinate of the ground coordinate system;

step 1.2: the method comprises the steps that A period echo accumulation and moving target detection processing are completed in a multifunctional radar, the energy distribution of radar echo in the distance and speed dimensions is obtained, and the value of A needs to be satisfied:

and->

Wherein T is _r For pulse repetition period r _w For distance gate width v _tr For the radial velocity of the target relative to the radar v _tt For tangential velocity of the target relative to the radar, R _min For minimum skew of target to radar, w _full Is the beam width;

step 1.3: performing target detection on the energy distribution through a multifunctional radar, and extracting and storing angle, distance and speed information of a target if the target exists; if the target does not exist, directly entering the step 1.4;

step 1.4: switching the search angle for the multifunctional radar, repeatedly executing the steps 1.2 and 1.3, searching the pointing angle, traversing the pitching direction firstly, traversing the azimuth direction later, covering all air defense responsible airspace, and enabling the interval between different pointing angles to be not more than 3dB wave beam width w under full array cooperation _full 。

3. The guidance method for clustered target end air defense according to claim 1, wherein step 2 comprises:

step 2.1: setting the number K of interception clusters, and selecting any K different targets c in the clusters _k As the initial cluster center

The included angle between the target direction and the ground is a pitch angle theta, and the included angle between the target direction and the normal direction of the antenna is an azimuth angle +.>

Step 2.2: calculating included angles alpha from all N targets of the cluster to the centers of K clusters _n,k For each target, selecting the cluster center with the smallest included angle, and recording the classification scheme P of the target _n,K And its angle value min (alpha _n,K ) N=1, 2, …, N is the end cluster threat number;

step 2.3: calculating the central coordinates of the targets in K clusters as updated central coordinates

Calculating an included angle delta alpha c before and after cluster center coordinate updating, and if delta alpha c is larger than a set threshold th, continuing to execute the step 2.2; if Δαc is smaller than the set threshold th, the center coordinates +.>

Classification scheme P _n,K And an included angle value min (alpha _n,K )；

Step 2.4: repeatedly executing the step 2.2 and the step 2.3, so that the number K of interception clusters covers the range of the multi-target tracking number while the multi-functional radar is covered;

step 2.5: according to the stored data, respectively calculating maximum value alpha_max of N intra-cluster included angles corresponding to different interception cluster numbers K _k To determine the number K of the end air defense interception clusters _now Central coordinates of interception cluster

And corresponding target partitioning scheme P _now ，K _now In meeting->

Taking a minimum value under the condition that +.>

For the 3dB wave beam width of the multi-functional radar subarray level, the cluster target classification scheme P for the end defense is made later _now To intercept the number K of clusters _now Corresponding scheme->

4. The guidance method for clustered target end air defense according to claim 1, wherein the step 3 comprises:

step 3.1: determining the number of array elements of the subarray as

Wherein M is the number of array elements of the full array, K _now For the number of the end air defense interception clusters, [ - ]]Representing a zero-rounding operator;

step 3.2: sub-array acquisition of respective intercept cluster center coordinates

As the initial direction of the tracking wave beam, the working frequency point is determined at the same time, so that the working frequency ranges of all subarrays are not overlapped;

step 3.3: the subarray adjusts beam direction, 1 sum beam and 2 difference beams are generated, distance and speed parameter measurement is completed based on sum beam data, amplitude comparison single pulse angle measurement is completed based on sum and difference three beam data, and the direction of the sum and difference three beams is dynamically adjusted according to an angle measurement result, so that a tracking beam always covers an interception cluster airspace range;

step 3.4: the interception bomb guide head adopts a semi-active radar guide body, passively receives a direct wave signal from a multifunctional radar and an echo signal reflected by a target, and obtains the center of an interception cluster and guide parameters of a specific interception target after processing;

step 3.5: and (3) continuously executing the steps 3.3 and 3.4 by the multifunctional radar and interception bomb guide head in the tracking guidance process until the interception combat is completed.

5. A guidance system for clustered target end air defense, comprising:

module M1: performing search tasks in an air defense responsibility airspace by using high-gain beams by adopting multi-functional radar full-array cooperation, capturing cluster targets, measuring quantity, angle, distance and speed parameters, and obtaining a cluster threat airspace distribution situation;

module M2: according to the cluster threat airspace distribution situation, calculating the optimal interception cluster quantity K _now Determining a corresponding interception cluster division scheme, so that targets in the cluster belong to only one interception cluster;

module M3: splitting an array into K _now The subarrays independently generate regional level wide beams, dynamically track the interception clusters and simultaneously provide continuous guidance irradiation for the interception bomb.

6. The guidance system for clustered target end air defense of claim 5 wherein the module M1 comprises:

module M1.1: after the multifunctional radar obtains the range of the air defense responsibility area, starting the full array resource, setting the beam as a high-gain narrow beam, and pointing the beam to the initial coordinate of the ground coordinate system;

module M1.2: the method comprises the steps that A period echo accumulation and moving target detection processing are completed in a multifunctional radar, the energy distribution of radar echo in the distance and speed dimensions is obtained, and the value of A needs to be satisfied:

and->

Wherein T is _r For pulse repetition period r _w For distance gate width v _tr For the radial velocity of the target relative to the radar v _tt For tangential velocity of the target relative to the radar, R _min For minimum skew of target to radar, w _full Is the beam width;

module M1.3: performing target detection on the energy distribution through a multifunctional radar, and extracting and storing angle, distance and speed information of a target if the target exists; if the target does not exist, directly entering a module M1.4;

module M1.4: the method comprises the steps of switching search angles for the multifunctional radar, repeatedly executing a module M1.2 and a module M1.3, searching the pointing angles, traversing the pitching direction firstly, traversing the azimuth direction later, covering all air-defense responsible airspace, and enabling the interval between different pointing angles to be not more than 3dB wave beam width w under full array cooperation _full 。

7. The guidance system for clustered target end air defense of claim 5 wherein the module M2 comprises:

module M2.1: setting the number K of interception clusters, and selecting any K different targets c in the clusters _k As the initial cluster center

The included angle between the target direction and the ground is a pitch angle theta, and the included angle between the target direction and the normal direction of the antenna is an azimuth angle +.>

Module M2.2: calculating included angles alpha from all N targets of the cluster to the centers of K clusters _n,k For each target, selecting the cluster center with the smallest included angle, and recording the classification scheme P of the target _n,K And its angle value min (alpha _n,K ) N=1, 2, …, N is the end cluster threat number;

module M2.3: calculate KThe center coordinates of the targets in the cluster are used as updated center coordinates

Calculating an included angle delta alpha c before and after cluster center coordinate updating, and if delta alpha c is larger than a set threshold th, continuing to execute the module M2.2; if Δαc is smaller than the set threshold th, the center coordinates +.>

Classification scheme P _n,K And an included angle value min (alpha _n,K )；

Module M2.4: repeatedly executing the module M2.2 and the module M2.3 to enable the number K of interception clusters to cover the range of the multi-target tracking number while the multi-functional radar is in use;

module M2.5: according to the stored data, respectively calculating maximum value alpha_max of N intra-cluster included angles corresponding to different interception cluster numbers K _k To determine the number K of the end air defense interception clusters _now Central coordinates of interception cluster

And corresponding target partitioning scheme P _now ，K _now In meeting->

Taking a minimum value under the condition that +.>

For the 3dB wave beam width of the multi-functional radar subarray level, the cluster target classification scheme P for the end defense is made later _now To intercept the number K of clusters _now Corresponding scheme->

8. The guidance system for clustered target end air defense of claim 5 wherein the module M3 comprises:

module M3.1: determining the number of array elements of the subarray as

Wherein M is the number of array elements of the full array, K _now For the number of the end air defense interception clusters, [ - ]]Representing a zero-rounding operator;

module M3.2: sub-array acquisition of respective intercept cluster center coordinates

As the initial direction of the tracking wave beam, the working frequency point is determined at the same time, so that the working frequency ranges of all subarrays are not overlapped;

module M3.3: the subarray adjusts beam direction, 1 sum beam and 2 difference beams are generated, distance and speed parameter measurement is completed based on sum beam data, amplitude comparison single pulse angle measurement is completed based on sum and difference three beam data, and the direction of the sum and difference three beams is dynamically adjusted according to an angle measurement result, so that a tracking beam always covers an interception cluster airspace range;

module M3.4: the interception bomb guide head adopts a semi-active radar guide body, passively receives a direct wave signal from a multifunctional radar and an echo signal reflected by a target, and obtains the center of an interception cluster and guide parameters of a specific interception target after processing;

module M3.5: the multifunctional radar and interception bomb guide head in the tracking guidance process continuously executes the module M3.3 and the module M3.4 until the interception combat is completed.

9. A computer-readable storage medium storing a computer program, characterized in that the computer program, when executed by a processor, implements the steps of the guidance method for clustered target end air defense of any one of claims 1 to 4.

10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the computer program when executed by the processor implements the steps of the guidance method for cluster target end air defense of any one of claims 1 to 4.

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