A Comprehensive Electronic Warfare Equipment Deployment Planning Method Based on Geographic Information System

Abstract

The application discloses a comprehensive electronic warfare equipment station planning method based on a geographic information system. In the geographic information system, a protection target position, theoretical trajectory data, terrain data and optical end well information are fused to realize automatic and visual station planning of participating interference equipment, reconnaissance equipment and radar equipment and provide guidance for station planning of a test site.

Description

Technical Field

[0001] This invention pertains to aircraft interference testing technology, specifically relating to a method for planning the deployment of integrated electronic warfare equipment based on a geographic information system. Background Technology

[0002] Before conducting penetration and countermeasures exercises, it is necessary to plan the deployment of the jamming equipment, reconnaissance equipment, and radar equipment involved in the test, and to provide guidance for the deployment at the test site.

[0003] Currently, the deployment planning for the jamming, reconnaissance, and radar equipment under test mainly relies on the experience of the test personnel. By protecting the target location and the aircraft's approach direction, a rough deployment area is determined, followed by on-site reconnaissance to pinpoint specific deployment locations. This entire process depends heavily on the personal experience of the test personnel or organizers, lacking scientific calculation and visualization processes. Extensive on-site reconnaissance work is also required, and the final selected deployment locations may not be optimal, and may even be less effective.

[0004] In his paper "Research on Ground Tracking and Control Station Site Planning Algorithm Based on Reference Track", Nie Feng proposed to automatically plan the sites of ground tracking and control stations for cruise missiles on a computer based on geographic information system, providing computer-aided means for planners. However, this method can only help with the deployment of ground tracking and control stations, and the station deployment algorithm only considers the distance information between the missile's planned trajectory and the tracking and control station, which has certain limitations. Summary of the Invention

[0005] This invention provides a comprehensive electronic warfare equipment deployment planning method based on geographic information systems, which can automatically and visually plan the deployment of jamming equipment, reconnaissance equipment, and radar equipment, providing guidance for the on-site deployment of jamming equipment, reconnaissance equipment, and radar equipment, and is also applicable to missile anti-jamming tests and missile penetration countermeasures exercises.

[0006] The specific technical solution to achieve the purpose of this invention is as follows: a comprehensive electronic warfare equipment deployment planning method based on a geographic information system. In the geographic information system, the method integrates the location of protected targets, theoretical ballistic data, terrain data, and optical terminal information to achieve automated and visualized deployment planning for the jamming equipment, reconnaissance equipment, and radar equipment participating in the test, providing guidance for deployment at the test site. Specifically, it includes the following steps:

[0007] Step 1: Based on the location point O of the protected target, determine the deployment area. The deployment area for self-defense electronic warfare equipment is within a radius of 0.5 km to 1.5 km from point O, referred to as Area A. The deployment area for support electronic warfare equipment is within a radius of 3 km to 10 km from point O, referred to as Area B. Proceed to Step 2.

[0008] Step 2: Based on the theoretical ballistic data, determine the missile's entry direction. Jamming equipment, reconnaissance equipment, and radar equipment should be deployed in advance. In the geographic information system, draw a straight line on the projection of the theoretical ballistic data onto the ground. Draw a line perpendicular to this projection line through the protected target location point O. Then, use this perpendicular line as the boundary to further divide area A and area B. The part of area A that is closer to the theoretical ballistic launch point is designated as area A1, and the part of area B that is closer to the theoretical ballistic launch point is designated as area B1. Proceed to step 3.

[0009] Step 3: When the missile passes overhead, the maximum elevation angle relative to the jamming equipment, reconnaissance equipment, and radar equipment should not exceed 70 degrees. For regions A1 and B1, calculate the maximum elevation angle of the theoretical trajectory relative to each point in 1-second increments of latitude and longitude. After removing the area composed of points with a maximum elevation angle greater than or equal to 70 degrees from region A1, the remaining area is region A2. After removing the area composed of points with a maximum elevation angle greater than or equal to 70 degrees from region B1, the remaining area is region B2. Proceed to step 4.

[0010] Step 4: In the geographic information system, overlay terrain data, calculate the unobstructed area A3 of region A2 relative to the interval between the theoretical ballistic maximum point and the impact point, calculate the unobstructed area B3 of region B2 relative to the interval between the theoretical ballistic maximum point and the impact point, and proceed to step 5.

[0011] Step 5: The jamming equipment and radar equipment in the unobstructed A3 area and the unobstructed B3 area should be forward-positioned. The jamming equipment should be as close as possible to the theoretical trajectory, while the radar equipment can be appropriately far away. The reconnaissance equipment should be deployed in the sidelobe area of ​​the jamming equipment and radar equipment, and should meet the isolation requirements. Proceed to Step 6.

[0012] Step 6: The devices are connected by optical fiber. Due to the limitation of system communication distance, if there is optical terminal well information near area A and area B, the jamming equipment, reconnaissance equipment and radar equipment deployed in unobstructed areas A3 and B3 should be deployed close to the optical terminal well location, with the distance maintained within the range of 300 to 500 meters. Obtain the deployment area A4 and area B4 that meet the requirements respectively, and proceed to step 7.

[0013] Step 7: Read the test missile parameter file, radar equipment parameter file, jamming equipment parameter file, and reconnaissance equipment parameter file. Perform effectiveness evaluation on the deployment areas A4 and B4 in 1-second increments of latitude and longitude. Analyze whether the deployment location meets the expected interference-to-signal ratio. If it does, obtain the center position of the deployment site and the area radius. If it does not meet the requirements, return to step 1 and readjust the deployment area.

[0014] Compared with the prior art, the significant advantages of the present invention are:

[0015] (1) Based on geographic information system, it can automatically and visually complete the site planning;

[0016] (2) By integrating multiple conditions such as the location of the protected target, theoretical ballistic data, terrain data, and optical well information, more accurate station deployment planning can be achieved;

[0017] (3) It can analyze whether the planned location of the station meets the expected interference-to-signal ratio, thus ensuring the test results.

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a flowchart of the integrated electronic warfare equipment deployment planning method based on geographic information systems according to the present invention.

[0020] Figure 2 A schematic diagram illustrating station deployment planning based on theoretical ballistic data.

[0021] Figure 3 This is a schematic diagram illustrating the calculation of the unobstructed area. Detailed Implementation

[0022] Combination Figures 1-3 The present invention discloses a comprehensive electronic warfare equipment deployment planning method based on a geographic information system. This method integrates the location of protected targets, theoretical ballistic data, terrain data, and optical terminal information within the geographic information system to achieve automated and visualized deployment planning for participating jamming equipment, reconnaissance equipment, and radar equipment, providing guidance for on-site deployment during tests. Specifically, it includes the following steps:

[0023] Step 1: Based on the location point O of the protected target, determine the deployment area. The deployment area for self-defense electronic warfare equipment is within a radius of 0.5 km to 1.5 km from point O, referred to as Area A. The deployment area for support electronic warfare equipment is within a radius of 3 km to 10 km from point O, referred to as Area B. Proceed to Step 2.

[0024] Step 2, see Figure 2 As shown, based on the theoretical ballistic data, the missile's entry direction is determined. Jamming equipment, reconnaissance equipment, and radar equipment should be deployed in advance. In the geographic information system, a straight line is drawn on the projection of the theoretical ballistic data onto the ground. A line perpendicular to this projection line is drawn through the protected target location point O. Then, using this perpendicular line as the boundary, regions A and B are further divided. The part of region A that is closer to the theoretical ballistic launch point is recorded as region A1, and the part of region B that is closer to the theoretical ballistic launch point is recorded as region B1. Proceed to step 3.

[0025] Step 3: When the missile passes overhead, the maximum elevation angle relative to the jamming equipment, reconnaissance equipment, and radar equipment should not exceed 70 degrees. For regions A1 and B1, calculate the maximum elevation angle of the theoretical trajectory relative to each point in 1-second increments of latitude and longitude. After removing the area composed of points with a maximum elevation angle greater than or equal to 70 degrees from region A1, the remaining area is region A2. After removing the area composed of points with a maximum elevation angle greater than or equal to 70 degrees from region B1, the remaining area is region B2. Proceed to step 4.

[0026] Step 4, see Figure 3 As shown, in the geographic information system, topographic data is overlaid, and considering standard atmospheric refraction and the equivalent Earth radius (equivalent Earth radius is 8500 km), the shielding angle θ between the top of the radar antenna and the shielding object is calculated:

[0027]

[0028] Among them, h grd The elevation of the object being shielded, in km and h. rda d is the elevation of the top of the radar antenna in km, and d is the horizontal distance between the top of the radar antenna and the obstruction in km. The region in region A2 that satisfies the obstruction angle less than θ is the unobstructed region A3 between the highest point of the relative theoretical trajectory and the landing point. The region in region B2 that satisfies the obstruction angle less than θ is the unobstructed region B3 between the highest point of the relative theoretical trajectory and the landing point. Proceed to step 5.

[0029] As can be seen from the parameters of the formula, the size of the shading angle is determined by the height and horizontal distance between the two points. Therefore, when using the overlay of terrain data from a geographic information system to calculate the shading angle, the corresponding height and horizontal distance must be calculated based on the coordinates of the two points.

[0030] Step 5: The jamming equipment and radar equipment in the unobstructed A3 area and the unobstructed B3 area should be forward-positioned. The jamming equipment should be as close as possible to the theoretical trajectory, while the radar equipment can be appropriately far away. The reconnaissance equipment should be deployed in the sidelobe area of ​​the jamming equipment and radar equipment, and should meet the isolation requirements.

[0031] Calculate the distance R1 between the jamming device and the reconnaissance device:

[0032]

[0033] Among them, P T2 The jamming vehicle's transmission power is expressed in dB and G. T2 G represents the gain of the jamming vehicle's transmitting antenna, in dBm; f represents the jamming vehicle's transmitting frequency, in MHz; and G represents the signal strength of the jamming vehicle's transmitting antenna. R1 Sens1 represents the receiver antenna gain of the reconnaissance vehicle, in dB; Sens1 represents the receiver sensitivity of the reconnaissance vehicle, in dBm; and Antilog[*] represents the anti-logarithmic function.

[0034] Calculate the distance R2 between the radar equipment and the reconnaissance equipment:

[0035]

[0036] Among them, P T3 The radar vehicle's transmit power is expressed in dB (G). T3 Set the gain of the radar vehicle's transmitting antenna, in dBm, and proceed to step 6.

[0037] Step 6: The devices are connected by optical fiber. Due to the limitation of system communication distance, if there is optical terminal information near area A and area B, the jamming equipment, reconnaissance equipment and radar equipment deployed in unobstructed area A3 and unobstructed area B3 should be deployed close to the optical terminal location, with the distance maintained between 300 meters and 500 meters. After obtaining the required deployment areas A4 and B4 respectively, proceed to step 7.

[0038] Step 7: The interference-to-signal ratio (ISR) is a crucial indicator determining the radar's detection probability. Read the parameter files of the tested missile, radar equipment, jamming equipment, and reconnaissance equipment. Evaluate the effectiveness of station deployment areas A4 and B4 in 1-second increments of latitude and longitude. Analyze whether the station locations meet the expected ISR. Calculate the input expected ISR (J / S).

[0039]

[0040] Among them, P j To interfere with the peak power of the device, G j For the antenna gain of the interference device, L j B is the total loss of the interfering equipment. j To interfere with the operating bandwidth of the device, P t For the target radar peak power, G t For the target radar transmitting antenna gain, G r σ is the target radar receiving antenna gain, L is the target radar receiver total loss, σ is the target radar cross section (RCS), τ is the pulse width of the radiated electromagnetic wave, and R is the distance between the jamming equipment and the missile.

[0041] Analyze whether the site location meets the expected interference-to-signal ratio. If it does, give the center location and radius of the site. If it does not, return to step 1 and readjust the site area.

Claims

1. A geographic information system-based comprehensive electronic warfare equipment station planning method, characterized in that, In geographic information system, the target position, the theoretical trajectory data, the terrain data and the optical fiber well information are fused to realize the automatic and visual station planning of the interference equipment, the reconnaissance equipment and the radar equipment, and to provide guidance for the station planning in the test site, which includes the following steps: Step 1: According to the target position point O, the station planning area is determined, the self-defense electronic warfare equipment deployment area is within the range of 0.5 kilometers to 1.5 kilometers from the point O, which is called A area, and the support electronic warfare equipment deployment area is within the range of 3 kilometers to 10 kilometers from the point O, which is called B area, and step 2 is entered; Step 2: According to the theoretical trajectory data, the missile entering direction is determined, and the interference equipment, the reconnaissance equipment and the radar equipment should be deployed in front, in the geographic information system, a straight line is drawn on the projection of the theoretical trajectory data on the earth, and a vertical line is drawn through the target position point O, then the A area and the B area are divided again with the vertical line as the boundary, the part of the A area close to the theoretical trajectory launch point is called A1 area, and the part of the B area close to the theoretical trajectory launch point is called B1 area, and step 3 is entered; Step 3: When the missile passes the top, the maximum pitch angle of the interference equipment, the reconnaissance equipment and the radar equipment should not exceed 70 degrees, and the maximum pitch angle of the theoretical trajectory relative to each point in the A1 area and the B1 area is calculated with 1 second of longitude and latitude as the step, and the A2 area is obtained by removing the area composed of the points with the maximum pitch angle greater than or equal to 70 degrees in the A1 area, and the B2 area is obtained by removing the area composed of the points with the maximum pitch angle greater than or equal to 70 degrees in the B1 area, and step 4 is entered; Step 4: In the geographic information system, the terrain data is superimposed, the unobstructed A3 area of the A2 area relative to the highest point to the landing point interval of the theoretical trajectory is calculated, and the unobstructed B3 area of the B2 area relative to the highest point to the landing point interval of the theoretical trajectory is calculated, and step 5 is entered; Step 5: The interference equipment and the radar equipment in the unobstructed A3 area and the unobstructed B3 area should be pre-positioned, the interference equipment should be as close to the theoretical trajectory as possible, and the radar equipment should be appropriately far away, and the reconnaissance equipment should be deployed in the sidelobe area of the interference equipment and the radar equipment, and should meet the isolation requirement; Under the condition of meeting the isolation requirement, the distance R1 between the interference equipment and the reconnaissance equipment is calculated: where P T2 is the interfering vehicle transmit power in dBm, G T2 is the interfering vehicle transmit antenna gain in dBi, and dB, f is the interference vehicle transmitting frequency in MHz, G R1 is the scout vehicle receiving antenna gain in dB, Sens1 is the scout vehicle receiver sensitivity in dBm, and Antilog[ ] is the antilog function; The distance R2 between the radar equipment and the reconnaissance equipment is calculated: wherein P T3 is the radar vehicle transmit power in dBm, G T3 is the radar vehicle transmit antenna gain in dB; Step 6 is entered; Step 6: The equipment is connected by optical fiber, which is limited by the system communication distance, if there is optical fiber well information near the A area and the B area, the interference equipment, the reconnaissance equipment and the radar equipment in the unobstructed A3 area and the unobstructed B3 area should be preferentially positioned near the optical fiber well position, the distance should be kept within the interval of 300 meters to 500 meters, and the station planning A4 area and the station planning B4 area meeting the requirements are obtained respectively, and step 7 is entered; Step 7, read the subject missile parameter file, radar equipment parameter file, jamming equipment parameter file, reconnaissance equipment parameter file, respectively, according to the latitude and longitude 1 second as the step for the A4 region, B4 region, the effectiveness evaluation, analysis whether the station position meets the expected jamming signal ratio, if it meets, the center position and the area radius of the station are obtained, if it does not meet, return to step 1, adjust the station area again; Calculate the expected jamming signal ratio JS: where P j is the peak power of the jammer, G j is the antenna gain of the jammer, L j is the total loss of the jammer, B j is the operating bandwidth of the jammer, P t is the peak power of the target radar, G t is the transmit antenna gain of the target radar, G r is the receive antenna gain of the target radar, L is the total loss of the target radar receiver, σ is the radar cross section of the target, τ is the pulse width of the radiated electromagnetic wave, and R is the distance between the jammer and the missile.

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