Multi-stage interception method and system based on multi-azimuth air group targets

Abstract

The invention discloses a multi-stage interception method and system based on multidirectional air group targets, and the method comprises the steps: forming a conical radiation space region through the radiation waves of an interception platform to cover the air group targets in all directions when the multidirectional air group targets are monitored by the interception platform; taking the air group target corresponding to the maximum threat degree as a first group target; if the minimum power density value is larger than the expected efficiency level power density value and the maximum power density value is smaller than or equal to the expected efficiency level power density value, overall interception is carried out on the first batch of group targets through a first-stage interception rule; and after the first-stage interception is completed, determining the number of undamaged targets in the first group of targets, and carrying out one-way interception on at least one undamaged target through a second-stage interception rule according to the number of the undamaged targets. According to the method, the interception scheme is formulated in the radiation space area through interception strategies in different stages, and effective interception of multi-azimuth group targets is achieved.

Description

Technical Field

[0001] The present invention relates to the field of interception and destruction technology, and in particular to a multi-stage interception method and system based on multi-directional aerial group targets. Background Art

[0002] With the development of unmanned technology and the opening of airspace, civilian ships may encounter intensive harassment from the air when sailing normally on the sea. In addition, aerial targets are increasingly flying in a coordinated manner, and the threat level is becoming higher.

[0003] At present, the characteristics of "multiple waves and random arrival" for group targets further increase the randomness, the irregularity of group target movement, and the uncertainty of arrival time, resulting in poor interception capability and low interception efficiency. Therefore, how to improve the interception efficiency for random group targets has become an urgent problem to be solved.

[0004] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present invention is to provide a multi-stage interception method and system based on multi-directional aerial group targets, aiming to solve the technical problem of how to improve the interception efficiency for random group targets.

[0006] To achieve the above object, the present invention provides a multi-stage interception method based on multi-directional air group targets, and the multi-stage interception method based on multi-directional air group targets includes:

[0007] When the interception platform detects a group of aerial targets in multiple directions, the radiation waves of the interception platform form a conical radiation space area to cover the group of aerial targets in various directions;

[0008] Selecting an aerial group target corresponding to the maximum threat level from the multi-directional aerial group targets through a threat membership function, and taking the aerial group target corresponding to the maximum threat level as the first batch of group targets;

[0009] Determine whether the minimum power density value and the maximum power density value in the first group of targets are less than or equal to the expected performance level power density value;

[0010] If the minimum power density value is greater than the expected performance level power density value, and the maximum power density value is less than or equal to the expected performance level power density value, the first group of targets are intercepted as a whole using the first stage interception rule;

[0011] After the first stage interception is completed, the number of undestroyed targets in the first group of targets is determined, and according to the number of undestroyed targets, at least one undestroyed target is unidirectionally intercepted using the second stage interception rule.

[0012] Optionally, after the step of performing unidirectional interception on at least one undestroyed target according to the number of undestroyed targets by using the second-stage interception rule, the method further includes:

[0013] After the second-stage interception is completed, it is determined that the first group of targets are intercepted successfully, and the process returns to the step of selecting the aerial group target corresponding to the maximum threat degree from the multi-directional aerial group targets through the threat membership function.

[0014] Optionally, the step of intercepting the first group of targets as a whole using the first-stage interception rule includes:

[0015] Determine the group parallel distance and current beam angle between the first group of targets and the platform;

[0016] Calculating the damage duration of the first group of targets according to the group parallel distance using a damage time formula;

[0017] The damage time formula is:

[0018] t d =e 0.2*d 0.01 <d<10

[0019] Where, t d is the damage duration, d is the group parallel distance;

[0020] Calculating the interception time of the first group of targets according to the current beam angle, the platform firing speed and the damage time by using the interception time formula;

[0021] The interception time formula is:

[0022]

[0023] Where, t a is the interception duration, α is the current beam angle, v is the platform firing speed, and n is the number of targets;

[0024] The first group of targets is intercepted as a whole according to the interception duration using the first-stage interception rule.

[0025] Optionally, the step of performing unidirectional interception on at least one undestroyed target by using a second-stage interception rule according to the number of undestroyed targets includes:

[0026] When the number of the undestroyed target is single, determining a target parallel distance between the undestroyed target and the platform, and determining an angle between the undestroyed target and a beam centerline;

[0027] Adjusting the current beam angle according to the target parallel distance and the included angle, and using the adjusted beam angle as the target beam angle;

[0028] The undestroyed target is intercepted unidirectionally using a second-stage interception rule based on the target beam angle.

[0029] Optionally, the step of performing unidirectional interception on at least one undestroyed target according to the number of undestroyed targets by using a second-stage interception rule further includes:

[0030] When there are multiple undestroyed targets, determining the threat level corresponding to each undestroyed target respectively;

[0031] Sorting multiple undestroyed targets based on the threat level corresponding to each undestroyed target to obtain a threat level ranking result;

[0032] According to the threat ranking result, each undestroyed target is intercepted one-way in turn using the second-stage interception rule.

[0033] Optionally, the step of selecting the aerial group target corresponding to the maximum threat degree from the multi-directional aerial group targets by using the threat membership function includes:

[0034] The total threat degree corresponding to each direction of the aerial group target is calculated by the threat membership function;

[0035] Determine the maximum threat level based on the total threat level corresponding to the multi-directional air group targets;

[0036] An aerial group target corresponding to the maximum threat level is selected from the multi-directional aerial group targets.

[0037] Optionally, the step of respectively calculating the total threat degree corresponding to the aerial group targets in each direction by using the threat membership function includes:

[0038] Determine the distance threat membership function, the speed threat membership function, the height threat membership function and the heading angle threat membership function according to the threat membership function;

[0039] The distance threat membership function is used to calculate the distance threat membership corresponding to each target in the multi-directional aerial group target;

[0040] The speed threat membership function is used to calculate the speed threat membership corresponding to each target in the multi-directional aerial group target;

[0041] The height threat membership function is used to calculate the height threat membership corresponding to each target in the multi-directional aerial group target;

[0042] The heading angle threat membership function is used to calculate the heading angle threat membership corresponding to each target in the multi-directional aerial group target;

[0043] According to the distance threat membership, speed threat membership, altitude threat membership and heading angle threat membership corresponding to each target in the multi-directional aerial group target, the total threat degree corresponding to each directional aerial group target is obtained through the total threat degree calculation formula.

[0044] Optionally, the distance threat membership function is:

[0045]

[0046] Where y(r) is the distance threat membership corresponding to each target in the multi-directional air group target, k is the correction coefficient, D1 is the critical distance at which the threat reaches the maximum, D2 is the critical distance at which the threat disappears, and r is the distance between each target and the interception platform;

[0047] The speed threat membership function is:

[0048] y(v)=1-e -av v>0

[0049] In the formula, y(v) is the velocity threat membership corresponding to each target in the multi-directional aerial group target, v is the moving speed of each target, and a is the correction coefficient;

[0050] The high threat membership function is:

[0051]

[0052] In the formula, y(h) is the height threat membership corresponding to each target in the multi-directional aerial group target, a is the height limit, k is the correction coefficient, and h is the ground height corresponding to each target;

[0053] The heading angle threat membership function is:

[0054]

[0055] Where y(θ) is the heading angle threat membership corresponding to each target in the multi-directional aerial group target, k is the correction coefficient, and θ is the heading angle of each target.

[0056] In addition, to achieve the above-mentioned purpose, the present invention also proposes a multi-stage interception system based on multi-directional air group targets, and the multi-stage interception system based on multi-directional air group targets includes:

[0057] A monitoring module, used for, when the interception platform monitors a multi-directional aerial group target, to form a conical radiation space area through the radiation wave of the interception platform to cover the aerial group targets in all directions;

[0058] A calculation module is used to select an aerial group target corresponding to a maximum threat degree from the multi-directional aerial group targets through a threat membership function, and use the aerial group target corresponding to the maximum threat degree as the first batch of group targets;

[0059] A judgment module, used to judge whether the minimum power density value and the maximum power density value in the first group of targets are less than or equal to the expected performance level power density value;

[0060] An interception module, configured to intercept the first group of targets as a whole by using a first-stage interception rule if the minimum power density value is greater than the expected performance level power density value and the maximum power density value is less than or equal to the expected performance level power density value;

[0061] The interception module is further used to determine the number of undestroyed targets in the first group of targets after the first stage of interception is completed, and to perform unidirectional interception on at least one undestroyed target according to the number of undestroyed targets using the second stage interception rules.

[0062] In addition, to achieve the above-mentioned objectives, the present invention also proposes a multi-stage interception device based on multi-directional aerial group targets, the device comprising: a memory, a processor, and a multi-stage interception program based on multi-directional aerial group targets stored in the memory and executable on the processor, the multi-stage interception program based on multi-directional aerial group targets being configured to implement the steps of the multi-stage interception method based on multi-directional aerial group targets as described above.

[0063] In addition, to achieve the above-mentioned purpose, the present invention also proposes a storage medium, on which is stored a multi-stage interception program based on multi-directional aerial group targets. When the multi-stage interception program based on multi-directional aerial group targets is executed by a processor, the steps of the multi-stage interception method based on multi-directional aerial group targets as described above are implemented.

[0064] When the interception platform monitors multi-directional aerial group targets, the present invention first forms a conical radiation space area through the radiation wave of the interception platform to cover the aerial group targets in all directions, and then selects the aerial group target corresponding to the maximum threat degree from the multi-directional aerial group targets through the threat membership function, and takes the aerial group target corresponding to the maximum threat degree as the first batch of group targets, and then determines whether the minimum power density value and the maximum power density value in the first batch of group targets are less than or equal to the expected performance level power density value; if the minimum power density value is greater than the expected performance level power density value, and the maximum power density value is less than or equal to the expected performance level power density value, the first batch of group targets are intercepted as a whole through the first-stage interception rule; after the first-stage interception is completed, the number of undestroyed targets in the first batch of group targets is determined, and at least one undestroyed target is intercepted unidirectionally through the second-stage interception rule according to the number of undestroyed targets. The present invention formulates an interception plan through different stage interception strategies in the radiation space area, and improves the interception efficiency for random group targets. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 It is a structural schematic diagram of a multi-stage interception device based on multi-directional aerial group targets in a hardware operating environment involved in an embodiment of the present invention;

[0066] Figure 2 It is a flow chart of a first embodiment of a multi-stage interception method based on multi-directional aerial group targets of the present invention;

[0067] Figure 3 A coverage cone area diagram of the first embodiment of the multi-stage interception method based on multi-directional aerial group targets of the present invention;

[0068] Figure 4 It is a distribution diagram of platform radiation at the target distance of the first embodiment of the multi-stage interception method based on multi-directional aerial group targets of the present invention;

[0069] Figure 5 A geometric relationship diagram of the radiation beam and the ring of the first embodiment of the multi-stage interception method based on multi-directional aerial group targets of the present invention;

[0070] Figure 6 A geometric relationship diagram of the radiation beam and the V-shape of the first embodiment of the multi-stage interception method based on multi-directional aerial group targets of the present invention;

[0071] Figure 7 It is an incoming situation diagram of two group targets of the first embodiment of the multi-stage interception method based on multi-directional aerial group targets of the present invention;

[0072] Figure 8 It is a group target interception damage curve diagram after the second stage of the first embodiment of the multi-stage interception method based on multi-directional aerial group targets of the present invention;

[0073] Fig. 9 It is a detailed diagram of the interception damage curve after the second stage of the first embodiment of the multi-stage interception method based on multi-directional air group targets of the present invention;

[0074] Fig.10 It is a diagram of the interception of group targets at a small beam angle according to the first embodiment of the multi-stage interception method based on multi-directional aerial group targets of the present invention;

[0075] Fig.11 It is a diagram showing the interception details at a small beam angle of the first embodiment of the multi-stage interception method based on multi-directional aerial group targets of the present invention;

[0076] Fig.12 It is a structural block diagram of the first embodiment of the multi-stage interception system based on multi-directional aerial group targets of the present invention.

[0077] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0078] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0079] Reference Figure 1 , Figure 1 It is a schematic diagram of the structure of a multi-stage interception device based on multi-directional aerial group targets in the hardware operating environment involved in the embodiment of the present invention.

[0080] like Figure 1 As shown, the multi-stage interception device based on multi-directional air group targets may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (Wireless-Fidelity, Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM), or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk storage. The memory 1005 may also be a storage system independent of the aforementioned processor 1001.

[0081] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation on the multi-stage interception equipment based on multi-directional air group targets, and may include more or less components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0082] like Figure 1 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a multi-stage interception program based on multi-directional air group targets.

[0083] exist Figure 1 In the multi-stage interception device based on multi-directional aerial group targets shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the multi-stage interception device based on multi-directional aerial group targets of the present invention can be set in the multi-stage interception device based on multi-directional aerial group targets, and the multi-stage interception device based on multi-directional aerial group targets calls the multi-stage interception program based on multi-directional aerial group targets stored in the memory 1005 through the processor 1001, and executes the multi-stage interception method based on multi-directional aerial group targets provided by the embodiment of the present invention.

[0084] The embodiment of the present invention provides a multi-stage interception method based on multi-directional air group targets, referring to Figure 2 , Figure 2 It is a flow chart of the first embodiment of the multi-stage interception method based on multi-directional aerial group targets of the present invention.

[0085] In this embodiment, the multi-stage interception method based on multi-directional aerial group targets includes the following steps:

[0086] Step S10: When the interception platform monitors the aerial group targets in multiple directions, the radiation waves of the interception platform form a conical radiation space area to cover the aerial group targets in various directions.

[0087] It is easy to understand that the execution subject of this embodiment can be a multi-stage interception system based on multi-directional aerial group targets with functions such as data processing, network communication and program running, or it can be other computer equipment with similar functions, etc., and this embodiment is not limited.

[0088] In this embodiment, reference Figure 3 , Figure 3This is the coverage cone region diagram of the first embodiment of the multi-stage interception method for multi-directional airborne group targets. The group targets include horizontal formations, vertical formations, circular formations, etc. All are based on the central target, and it is assumed that the reference unit parameters of different group target structures are the same. Assume the number of targets is n (n = 5 in this example), which consists of a central target and one target in each of the four surrounding directions. The distance between the central target and the surrounding targets is the same. The central target is numbered 1, the target in the forward direction is numbered 2, the target in the reverse forward direction is numbered 3, and the left and right targets are symmetrically numbered 4 and 5, as Figure 1 shown. The interception platform is at point O, and the interception area is a conical radiation space area with point O as the starting point, covering OAB.

[0089] It should also be noted that assume a certain platform radiates and emits directionally outward, the beam angle α is fixed, and the angle formed by the beam center ray and the plane where the wave source is located is the inclination angle Under the constraint of these two angles, the final radiation wave forms a conical radiation space area, which can cause a killing effect on the targets within this area. Refer to Figure 4 , Figure 4 This is the distribution diagram of the platform radiation of the first embodiment of the multi-stage interception method for multi-directional airborne group targets of the present invention at the target distance.

[0090] In this embodiment, in order to be able to cover each target in the group target with a conical radiation space area formed by the radiation wave, the following conditions need to be met:

[0091] Refer to Figure 5 , Figure 5 This is the geometric relationship diagram of the radiation beam and the ring of the first embodiment of the multi-stage interception method for multi-directional airborne group targets of the present invention. Geometric analysis is carried out on the common ring. Aim the radiation beam center line (i.e., point A) at the No. 1 target. At the same height, in order to keep all 5 targets within the beam range, the following analysis and calculation are carried out:

[0092]

[0093] In the formula, a is the semi-major axis length. Usually, it can ensure covering the target. Constrain b to make b > R, that is, the formula needs to be satisfied:

[0094]

[0095] It should also be noted that when energy is transmitted, it follows a certain attenuation law. For a specific target, its damage threshold is a fixed value. To cause damage at the expected level to the corresponding target, it is required that the distance r < XX, and XX is a specific distance preset by the user.

[0096] Refer to Figure 6 , Figure 6 This is a geometric relationship diagram between the radiation beam and the V-shape of the first embodiment of the multi-stage interception method based on multi-directional aerial group targets of the present invention. In addition to the ring, the V-shape is also a common formation. Similarly, the geometric analysis is performed. Since the distance between targets 4 and 5 is the largest distance in the entire horizontal direction, the largest short axis b in the horizontal direction is used for conditional constraints to ensure that the entire target is within the radiation beam. At this time From the geometric relationship, we can know that the distance from point B to point A in the long axis direction is longer than the length from target 1 to the bottom edge of the V-shape. Therefore, while ensuring that targets 4 and 5 meet the above formula, targets 1, 2, and 3 must be within the radiation beam range.

[0097] It should also be understood that, since the shapes of group targets are different, different conditions need to be met. Analysis can be performed for different shapes and the radiation wave can be adjusted so that each target in the group target is within the radiation beam range.

[0098] Step S20: selecting an aerial group target corresponding to the maximum threat level from the multi-directional aerial group targets through the threat membership function, and taking the aerial group target corresponding to the maximum threat level as the first batch of group targets.

[0099] Furthermore, the total threat degree corresponding to each directional aerial group target is calculated respectively through the threat membership function; the maximum threat degree is determined according to the total threat degree corresponding to the multi-directional aerial group targets; and the aerial group target corresponding to the maximum threat degree is selected from the multi-directional aerial group targets.

[0100] Further, the processing method of respectively calculating the total threat degree corresponding to each air group target in each orientation through the threat membership function is as follows: determining the distance threat membership function, the speed threat membership function, the height threat membership function and the heading angle threat membership function according to the threat membership function; respectively calculating the distance threat membership corresponding to each target in the multi-orientation air group target through the distance threat membership function; respectively calculating the speed threat membership corresponding to each target in the multi-orientation air group target through the speed threat membership function; respectively calculating the height threat membership corresponding to each target in the multi-orientation air group target through the height threat membership function; respectively calculating the heading angle threat membership corresponding to each target in the multi-orientation air group target through the heading angle threat membership function; and obtaining the total threat degree corresponding to the air group targets in each orientation through the total threat degree calculation formula according to the distance threat membership, speed threat membership, height threat membership and heading angle threat membership corresponding to each target in the multi-orientation air group target.

[0101] The distance threat membership function is:

[0102]

[0103] Where y(r) is the distance threat membership corresponding to each target in the multi-directional aerial target group, k is the correction coefficient, D1 is the critical distance at which the threat reaches the maximum, D2 is the critical distance at which the threat disappears, r is the distance between each target and the interception platform, k = 0.1, D1 = 10km, D2 = 200km.

[0104] It should be noted that this function is used to quantify the distance between the target and the interception platform as a threat membership. When the distance is within a certain distance D1, the distance threat reaches the maximum. Conversely, beyond a certain distance D2, the threat disappears. In the middle distance, an exponential function is used to represent the attenuation of the threat level.

[0105] The speed threat membership function is:

[0106] y(v)=1-e -av v>0

[0107] Where y(v) is the velocity threat membership corresponding to each target in the multi-directional aerial group target, v is the moving speed of each target, and a is the correction coefficient, which is a=2.

[0108] It should be understood that this function represents the target threat membership at different speeds, and the faster the speed, the higher the threat level.

[0109] The high threat membership function is:

[0110]

[0111] Where y(h) is the height threat membership corresponding to each target in the multi-directional aerial group target, a is the height limit, k is the correction coefficient, h is the ground height corresponding to each target, and a=0.1, k=0.5.

[0112] It should be noted that this function represents the relationship between the threat level and the altitude. When the altitude is lower than a certain value a, the target is difficult to detect and thus difficult to intercept, and the threat is greatest. The higher the altitude, the easier it is to be detected and tracked, and the threat level gradually decreases.

[0113] The heading angle threat membership function is:

[0114]

[0115] Where y(θ) is the heading angle threat membership corresponding to each target in the multi-directional aerial group target, k is the correction coefficient, k=1, and θ is the heading angle of each target.

[0116] In the specific implementation, the heading angle of the target is analyzed and calculated using a function. The approach speed of the attacking target can be obtained based on the heading angle. This speed is relative to its own speed. The larger the absolute value of the angle, the smaller the threat level. When the heading angle is 0°, the target threat is the greatest.

[0117] Furthermore, by accumulating the threat membership calculated by the previous functions, we can get the total threat degree of the target after considering several important indicators. The objects are all the same target, so the calculation formula of the total threat degree is:

[0118]

[0119] In this embodiment, a situation is assumed in which a group of five targets are attacking in a circular formation. Assume that the center target of the group of incoming targets is 40km away from the platform, the heading angle is 30°, the distance between each target is 1km, the flight altitude of all targets is 0.2km, and the flight speed is 0.7Ma.

[0120] According to the threat membership function, we can calculate:

[0121]

[0122] W 总 =W1+W2+W3+2*W4=12.54

[0123] At the same time, the reaction time is calculated based on the distance and speed:

[0124]

[0125] It can be seen that the threat level of different targets in the same scene is similar. We continue to analyze the overall motion parameters.

[0126] If the target in this situation is faster, reaching 0.9 Ma, the total threat is calculated to be W 总 =12.58, which is higher than before. At the same time, the reaction time is shortened to t=131 (seconds), which is consistent with the conclusion that the faster the target speed, the higher the threat level. Then analyze the distance. If the target distance is shortened to 20km in this situation, the total threat is calculated to be W. 总 =13.53, the reaction time is also shortened, at this time t=84 (seconds), and the overall threat level is more obviously improved.

[0127] The maximum threat degree is selected from the total threat degrees corresponding to multiple aerial group targets, and the aerial group targets corresponding to the maximum threat degree are taken as the first batch of group targets.

[0128] In this embodiment, the group of targets may attack from two directions or in multiple waves. Multiple waves may also attack in which each wave is a group of multiple targets. The actual situation that may appear is very complicated. Below, a simple case is used as an example to illustrate:

[0129] If there are a group of incoming targets from the left and right directions respectively, it is necessary to give priority to intercepting the aerial group targets with the greatest threat level.

[0130] In this embodiment, reference Figure 7 , Figure 7 This is an incoming situation diagram of two group targets of the first embodiment of the multi-stage interception method based on multi-directional aerial group targets of the present invention. If a group of targets is attacked from the left at 30°, five targets form a ring, approach at a speed of 0.7Ma, a heading angle of 0°, and an altitude of 1km, and are 10km away from the platform when they are discovered. At the same time, another group of targets is attacked from the right at 60°, and five targets form a V shape, approach at a speed of 0.9Ma, a heading angle of 0°, and an altitude of 1km, and are 12km away from the platform when they are discovered.

[0131] The left is designated as the first batch of targets, and the right is designated as the second batch of targets. After calculation, it is found that the threat level of the first batch of targets is W1=13.5, and the threat level of the second batch of targets is W2=12.8. At this time, the first batch of targets should be intercepted first.

[0132] Step S30: Determine whether the minimum power density value and the maximum power density value in the first group of targets are less than or equal to the expected performance level power density value.

[0133] In the specific implementation, it is also necessary to determine the power density value of each target in the first group of targets.

[0134] Without considering atmospheric attenuation, the radiation power will not decay, but as the distance increases, the radiation area increases and the power density decreases accordingly. Because radiation is a cone with the radiation source as the vertex, the area at different distances satisfies the formula:

[0135] A=4πR 2

[0136] In fact, atmospheric attenuation is an important factor that cannot be ignored. For example, in common sunny weather conditions, the radiation power attenuation can be calculated by 10 -0.12R To perform exponential decay fitting, the power density calculation formula is:

[0137]

[0138] Where S is the power density at the target distance, P is the radiation power of the radiation source, G is the directional radiation antenna gain, and R is the distance between the radiation source and the target.

[0139] P and G are both known data, but R is not directly known and needs to be calculated based on the known data. In terms of target information acquisition, if the horizontal distance r between the target and the platform and the target's flight altitude h are known, the calculation formula for R is:

[0140]

[0141] The inclination is through It is concluded that the beam angle α depends on the characteristics of the platform itself, and the radiation directivity coefficient at the edge of the beam is half of that at the center of the beam.

[0142] refer to Figure 4 It can be seen that according to the spatial geometric relationship, it can be deduced that:

[0143]

[0144] In the formula, S A is the power density value of target A in the group target, S B is the power density value of target B in the group target, S C is the power density value of target C in the group target, S D is the power density value of target D in the group target, S E is the power density value of target E in the group target.

[0145] Step S40: If the minimum power density value is greater than the expected performance level power density value, and the maximum power density value is less than or equal to the expected performance level power density value, the first group of targets are intercepted as a whole using the first stage interception rule.

[0146] It should be understood that Figure 4 In the figure, R is the distance between the targets. After comparing and analyzing several parameters, it can be seen that the one with the highest power density is S A The one with the smallest power density is S C . C Compared with the expected efficiency level power density, if it is greater than the minimum value, it can cause damage to all targets in the area above the expected level. If it cannot be met, S A Compare it with the expected damage efficiency level power density. If it is lower than the maximum value, all targets in the area cannot cause the expected damage. C Greater than the expected performance level power density value, and the maximum power density value S A If it is less than or equal to the expected efficiency level power density value, it means that there may be some targets in the first group of targets under the current beam angle that cannot cause the expected damage.

[0147] It should also be noted that when the minimum power density value is greater than the expected performance level power density value, and the maximum power density value is less than or equal to the expected performance level power density value, it is necessary to determine the group parallel distance and the current beam angle between the first group of targets and the platform; calculate the damage time of the first group of targets according to the group parallel distance through the damage time formula; calculate the interception time of the first group of targets according to the current beam angle, platform firing speed and damage time through the interception time formula; and intercept the first group of targets as a whole according to the interception time through the first-stage interception rules.

[0148] The damage time formula is:

[0149] t d =e 0.2*d 0.01 <d<10

[0150] Where, t d is the damage duration, d is the group parallel distance;

[0151] The interception time formula is:

[0152]

[0153] Where, t a is the interception duration, α is the current beam angle, v is the platform firing speed, and n is the number of targets.

[0154] It should also be noted that the first-stage interception rule is to intercept the first group of targets as a whole according to the interception duration and the current beam angle, and the group parallel distance can be the average value of the parallel distances corresponding to multiple targets in the group.

[0155] In the specific implementation, if the power density value of the expected efficiency level is greater than the minimum power density value of the first batch of group targets, it means that the damage threshold can be reached at the position with the minimum radiation energy, and all targets in the group can be destroyed. The interception time formula can be used to calculate the interception time of the first batch of group targets. According to the interception time, the first batch of group targets are intercepted as a whole according to the first-stage interception rules. After that, it is necessary to return to the step of selecting the maximum threat degree from the total threat degree corresponding to the multi-directional aerial group targets, and re-determine the first batch of group targets for platform switching, etc.

[0156] It should also be understood that for targets of the same type and size, the damage threshold is a fixed estimate. When the target is of a different type, its damage threshold will change, but it is still a fixed estimate. When the target type (shape, size, components, protection level) is different, its damage threshold is different, but the damage threshold of the same type of target is the same.

[0157] Step S50: After the first stage interception is completed, the number of undestroyed targets in the first group of targets is determined, and according to the number of undestroyed targets, at least one undestroyed target is unidirectionally intercepted using the second stage interception rule.

[0158] Furthermore, when the number of undestroyed targets is single, the target parallel distance between the undestroyed target and the platform is determined, and the angle between the undestroyed target and the beam centerline is determined; the current beam angle is adjusted according to the target parallel distance and the angle, and the adjusted beam angle is used as the target beam angle; based on the target beam angle, the undestroyed target is intercepted unidirectionally through the second-stage interception rule.

[0159] It should be noted that the second-stage interception rules include single-target interception rules and multiple-target interception rules. The single-target interception rule is to directly adjust the size of the current beam angle, and perform one-way interception on the undestroyed target according to the adjusted beam angle until it is destroyed.

[0160] When there are multiple undestroyed targets, determining the threat level corresponding to each undestroyed target respectively;

[0161] Based on the threat degree corresponding to each undestroyed target, multiple undestroyed targets are sorted to obtain a threat degree sorting result; and according to the threat degree sorting result, each undestroyed target is intercepted unidirectionally in turn through the second-stage interception rule.

[0162] It should also be noted that the threat degree corresponding to each undestroyed target can be calculated through the threat membership function.

[0163] It should be understood that it is necessary to select the undestroyed target corresponding to the maximum threat level from the threat level sorting results, then determine the target parallel distance between the undestroyed target and the platform, and determine the angle between the undestroyed target and the beam centerline, adjust the current beam angle according to the target parallel distance and the angle, and perform one-way interception on the undestroyed target with the maximum threat level according to the adjusted beam angle until it is destroyed, then return to recalculate the threat level corresponding to the remaining undestroyed targets, select the undestroyed target corresponding to the maximum threat level, and perform one-way interception on the undestroyed target corresponding to the maximum threat level until all undestroyed targets are successfully intercepted.

[0164] Furthermore, after the second-stage interception is completed, it is determined that the first batch of group targets are intercepted successfully, and the process returns to the step of selecting the air group target corresponding to the maximum threat level from the multi-directional air group targets through the threat membership function, and intercepts the re-selected air group target corresponding to the maximum threat level.

[0165] In this embodiment, reference Figure 8 , Fig. 9 , Fig.10 and Fig.11 , Figure 8 It is a group target interception damage curve diagram after the second stage of the first embodiment of the multi-stage interception method based on multi-directional aerial group targets of the present invention; Fig. 9 This is a detailed diagram of the interception damage curve after the second stage of the first embodiment of the multi-stage interception method based on multi-directional air group targets of the present invention. Fig.10 It is a diagram of the interception of group targets at a small beam angle according to the first embodiment of the multi-stage interception method based on multi-directional aerial group targets of the present invention; Fig.11 This is a diagram showing interception details at a small beam angle according to the first embodiment of the multi-stage interception method based on multi-directional aerial group targets of the present invention. Figure 8 and Fig. 9 It is stated in the figure that after entering the near boundary, the damage curve becomes significantly steeper, and the curve to the left has a more obvious pause line. This is because the beam is more concentrated, the distance is closer, the power density is greater, and the energy accumulation is faster. At the same time, because it is a single target interception, the target that is destroyed later will have a period of radiation energy accumulation pause. In the second stage, the number of remaining targets is less than that of the formation targets. Fig.10 and Fig.11 The interception effect is changed by changing the interceptor's platform radiation beam angle. When the beam angle is reduced by 1°, the platform completes the interception of the remaining targets with higher efficiency.

[0166] In this embodiment, when the interception platform detects a multi-directional aerial group target, first, a conical radiation space area is formed by the radiation wave of the interception platform to cover the aerial group targets in all directions, and then the aerial group target corresponding to the maximum threat degree is selected from the multi-directional aerial group targets through the threat membership function, and the aerial group target corresponding to the maximum threat degree is used as the first batch of group targets, and then it is determined whether the minimum power density value and the maximum power density value in the first batch of group targets are less than or equal to the expected performance level power density value; if the minimum power density value is greater than the expected performance level power density value, and the maximum power density value is less than or equal to the expected performance level power density value, the first batch of group targets are intercepted as a whole through the first-stage interception rule; after the first-stage interception is completed, the number of undestroyed targets in the first batch of group targets is determined, and at least one undestroyed target is intercepted unidirectionally through the second-stage interception rule according to the number of undestroyed targets. This embodiment formulates an interception plan through different stage interception strategies in the radiation space area, and improves the interception efficiency for random group targets.

[0167] Reference Fig.12 , Fig.12 It is a structural block diagram of the first embodiment of the multi-stage interception system based on multi-directional aerial group targets of the present invention.

[0168] like Fig.12As shown, the multi-stage interception system based on multi-directional air group targets proposed in the embodiment of the present invention includes:

[0169] The monitoring module 1201 is used to, when the interception platform monitors a multi-directional air group target, form a conical radiation space area through the radiation wave of the interception platform to cover the air group targets in all directions;

[0170] A calculation module 1202 is used to select an aerial group target corresponding to a maximum threat level from the multi-directional aerial group targets through a threat membership function, and use the aerial group target corresponding to the maximum threat level as the first batch of group targets;

[0171] A determination module 1203 is used to determine whether the minimum power density value and the maximum power density value in the first group of targets are less than or equal to the expected performance level power density value;

[0172] The interception module 1204 is configured to intercept the first group of targets as a whole by using a first-stage interception rule if the minimum power density value is greater than the expected performance level power density value and the maximum power density value is less than or equal to the expected performance level power density value;

[0173] The interception module 1204 is further configured to determine the number of undestroyed targets in the first group of targets after the first stage of interception is completed, and perform unidirectional interception on at least one undestroyed target according to the number of undestroyed targets using the second stage interception rule.

[0174] In this embodiment, when the interception platform detects a multi-directional aerial group target, first, a conical radiation space area is formed by the radiation wave of the interception platform to cover the aerial group targets in all directions, and then the aerial group target corresponding to the maximum threat degree is selected from the multi-directional aerial group targets through the threat membership function, and the aerial group target corresponding to the maximum threat degree is used as the first batch of group targets, and then it is determined whether the minimum power density value and the maximum power density value in the first batch of group targets are less than or equal to the expected performance level power density value; if the minimum power density value is greater than the expected performance level power density value, and the maximum power density value is less than or equal to the expected performance level power density value, the first batch of group targets are intercepted as a whole through the first-stage interception rule; after the first-stage interception is completed, the number of undestroyed targets in the first batch of group targets is determined, and at least one undestroyed target is intercepted unidirectionally through the second-stage interception rule according to the number of undestroyed targets. This embodiment formulates an interception plan through different stage interception strategies in the radiation space area, and improves the interception efficiency for random group targets.

[0175] Other embodiments or specific implementations of the multi-stage interception system based on multi-directional aerial group targets of the present invention can refer to the above-mentioned method embodiments and will not be described in detail here.

[0176] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0177] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0178] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as a read-only memory / random access memory, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0179] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multi-stage interception method based on multi-directional aerial group targets, characterized in that: The multi-stage interception method based on multi-directional aerial group targets comprises the following steps: When the interception platform detects a group of aerial targets in multiple directions, the radiation waves of the interception platform form a conical radiation space area to cover the group of aerial targets in various directions; Selecting an aerial group target corresponding to the maximum threat level from the multi-directional aerial group targets through a threat membership function, and taking the aerial group target corresponding to the maximum threat level as the first batch of group targets; Determine whether the minimum power density value and the maximum power density value in the first group of targets are less than or equal to the expected performance level power density value; If the minimum power density value is greater than the expected performance level power density value, and the maximum power density value is less than or equal to the expected performance level power density value, the first group of targets are intercepted as a whole using the first stage interception rule; After the first stage interception is completed, the number of undestroyed targets in the first group of targets is determined, and according to the number of undestroyed targets, at least one undestroyed target is unidirectionally intercepted using the second stage interception rule.

2. The method according to claim 1, characterized in that After the step of performing unidirectional interception on at least one undestroyed target according to the number of undestroyed targets by using the second-stage interception rule, the method further includes: After the second-stage interception is completed, it is determined that the first group of targets are intercepted successfully, and the process returns to the step of selecting the aerial group target corresponding to the maximum threat degree from the multi-directional aerial group targets through the threat membership function.

3. The method according to claim 1, characterized in that The step of intercepting the first group of targets as a whole by using the first stage interception rule comprises: Determine the group parallel distance and current beam angle between the first group of targets and the platform; Calculating the damage duration of the first group of targets according to the group parallel distance using a damage time formula; The damage time formula is: t d =e 0.2*d 0.01<d<10 Where, t d is the damage duration, d is the group parallel distance; Calculating the interception time of the first group of targets according to the current beam angle, the platform firing speed and the damage time by using the interception time formula; The interception time formula is: Where, t a is the interception duration, α is the current beam angle, v is the platform firing speed, and n is the number of targets; The first group of targets is intercepted as a whole according to the interception duration using the first-stage interception rule.

4. The method according to claim 3, characterized in that The step of performing unidirectional interception on at least one undestroyed target according to the number of undestroyed targets by using the second-stage interception rule comprises: When the number of the undestroyed target is single, determining a target parallel distance between the undestroyed target and the platform, and determining an angle between the undestroyed target and a beam centerline; Adjusting the current beam angle according to the target parallel distance and the included angle, and using the adjusted beam angle as the target beam angle; The undestroyed target is intercepted unidirectionally using a second-stage interception rule based on the target beam angle.

5. The method according to claim 3, characterized in that: The step of performing unidirectional interception on at least one undestroyed target according to the number of undestroyed targets by using the second-stage interception rule also includes: When there are multiple undestroyed targets, determining the threat level corresponding to each undestroyed target respectively; Sorting multiple undestroyed targets based on the threat level corresponding to each undestroyed target to obtain a threat level ranking result; According to the threat ranking result, each undestroyed target is intercepted one-way in turn using the second-stage interception rule.

6. The method according to any one of claims 1 to 5, characterized in that: The step of selecting the aerial group target corresponding to the maximum threat degree from the multi-directional aerial group targets through the threat membership function includes: The total threat degree corresponding to each direction of the aerial group target is calculated by the threat membership function; Determine the maximum threat level based on the total threat level corresponding to the multi-directional air group targets; An aerial group target corresponding to the maximum threat level is selected from the multi-directional aerial group targets.

7. The method according to claim 6, characterized in that The step of respectively calculating the total threat degree corresponding to the aerial group targets in various directions by using the threat membership function comprises: Determine the distance threat membership function, the speed threat membership function, the height threat membership function and the heading angle threat membership function according to the threat membership function; The distance threat membership function is used to calculate the distance threat membership corresponding to each target in the multi-directional aerial group target; The speed threat membership function is used to calculate the speed threat membership corresponding to each target in the multi-directional aerial group target; The height threat membership function is used to calculate the height threat membership corresponding to each target in the multi-directional aerial group target; The heading angle threat membership function is used to calculate the heading angle threat membership corresponding to each target in the multi-directional aerial group target; According to the distance threat membership, speed threat membership, altitude threat membership and heading angle threat membership corresponding to each target in the multi-directional aerial group target, the total threat degree corresponding to each directional aerial group target is obtained through the total threat degree calculation formula.

8. The method according to claim 7, characterized in that The distance threat membership function is: Where y(r) is the distance threat membership corresponding to each target in the multi-directional air group target, k is the correction coefficient, D1 is the critical distance at which the threat reaches the maximum, D2 is the critical distance at which the threat disappears, and r is the distance between each target and the interception platform; The speed threat membership function is: y(v)=1-e -av v>0 In the formula, y(v) is the velocity threat membership corresponding to each target in the multi-directional aerial group target, v is the moving speed of each target, and a is the correction coefficient; The high threat membership function is: In the formula, y(h) is the height threat membership corresponding to each target in the multi-directional aerial group target, a is the height limit, k is the correction coefficient, and h is the ground height corresponding to each target; The heading angle threat membership function is: Where y(θ) is the heading angle threat membership corresponding to each target in the multi-directional aerial group target, k is the correction coefficient, and θ is the heading angle of each target.

9. A multi-stage interception system based on multi-directional aerial group targets, characterized in that: The multi-stage interception system based on multi-directional air group targets includes: A monitoring module, used for, when the interception platform monitors a multi-directional aerial group target, to form a conical radiation space area through the radiation wave of the interception platform to cover the aerial group targets in all directions; A calculation module is used to select an aerial group target corresponding to a maximum threat degree from the multi-directional aerial group targets through a threat membership function, and use the aerial group target corresponding to the maximum threat degree as the first batch of group targets; A judgment module, used to judge whether the minimum power density value and the maximum power density value in the first group of targets are less than or equal to the expected performance level power density value; An interception module, configured to intercept the first group of targets as a whole by using a first-stage interception rule if the minimum power density value is greater than the expected performance level power density value and the maximum power density value is less than or equal to the expected performance level power density value; The interception module is further used to determine the number of undestroyed targets in the first group of targets after the first stage of interception is completed, and to perform unidirectional interception on at least one undestroyed target according to the number of undestroyed targets using the second stage interception rules.

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