Remote support interference simulation system and interference simulation method
By mounting an interference simulator on the tethered aircraft, simulating the change in the azimuth pitch angle of the long-distance support jamming, the problem of low fidelity in the ground erecting jammers in the prior art is solved, and efficient long-distance support jamming is achieved.
Patent Information
- Application Number
- CN202510111627.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-04-15
AI Technical Summary
In the prior art, ground jammers are installed to simulate long-distance support for interference, with close interference distances and fixed angles, and the simulation is not very realistic.
By mounting an interference simulator on the tethered aircraft, the aircraft ground station provides power, so that the interference simulator can receive radar signals and generate noise, spoof and combined interference. At the same time, the tethered aircraft can fly according to the planned route, simulating the changes in the pitch angle of the actual interfering aircraft.
It realizes efficient simulation of long-distance interference support, overcomes the problems of close distance, fixed angle, and low simulation realism in the prior art, and improves training efficiency and simulation realism.
Smart Images
Figure CN119828082A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an interference simulation system and an interference simulation method, in particular to a long-distance support interference simulation system and an interference simulation method, belonging to the technical field of radar simulation training. Background Art
[0002] Long-distance support jamming against radar is generally carried out by a dedicated high-power jammer. If the jammer is placed on the ground, it is far away from the radar. Affected by the curvature of the earth, the jammer radiation cannot enter the radar main lobe, but can only enter the side lobe of the radar antenna. By injecting strong radiation jamming signals into the receiver through the side lobe of the radar antenna, suppressive jamming or dense false target jamming is used. To jam the radar, line-of-sight conditions must be achieved. Line-of-sight conditions refer to the line between the jammer's radiating antenna and the radar antenna being free of obstructions such as the ground or mountains. Therefore, it is generally achieved by mounting the jammer on an aircraft and flying it to a certain altitude.
[0003] In the process of combat training in a complex electromagnetic environment, in order to build a long-distance support interference scenario, it is generally achieved by mounting jammer pods on manned aircraft or simulating long-distance support interference by setting up jammers on the ground. The cost of mounting jammer pods on manned aircraft is high, and the test scenario is complex to set up, which is not suitable for routine teaching and training; the ground-mounted jammer simulates long-distance support interference, the interference distance is short, the angle is fixed, and the simulation fidelity is not high. Summary of the invention
[0004] The purpose of the present invention is to solve the shortcomings of the prior art that the ground-mounted jammer simulates long-distance support interference, the interference distance is short, the angle is fixed, and the simulation fidelity is not high, and to provide a long-distance support interference simulation system.
[0005] In order to solve the above problems, the present application is implemented through the following technical solutions: A long-distance support jamming simulation system includes a jamming simulator, which is special in that: the jamming simulator is mounted on a tethered aircraft, and the jamming simulator and the tethered aircraft are powered by an aircraft ground station; Wherein, the interference simulator receives radar signals, performs parameter measurement sample storage on the signals, and generates noise, deception and combined interference; The tethered aircraft flies according to the planned route, simulating the azimuth and pitch angle changes of the actual interfering aircraft.
[0006] Furthermore, the interference simulator includes a receiving antenna, a transmitting antenna, a transceiver component, a digital frequency storage component and a power amplifier component. The receiving antenna receives the radar signal and outputs it to the receiving branch of the transceiver component, and outputs the intermediate frequency signal to the digital frequency storage component after filtering, amplifying and frequency conversion. The digital frequency storage component measures and sorts the received intermediate frequency signal to generate an interfering intermediate frequency signal; The interfering intermediate frequency signal is frequency-converted through the transmitting branch of the transceiver component, converted into an interfering radio frequency signal, and then output to the power amplifier component; The power amplifier component amplifies the interference signal and outputs it to the transmitting antenna, which radiates it into space.
[0007] Further, the transceiver assembly includes a receiving branch and a transmitting branch, the receiving branch is electrically connected to the input end of the digital frequency storage assembly, the transmitting branch is electrically connected to the output end of the digital frequency storage assembly, the receiving branch can filter, amplify, and frequency-convert the received signal, and the transmitting branch can frequency-convert the received signal; Furthermore, the aircraft ground station provides power to the tethered aircraft and the interference simulator via a tethered cable, and the tethered cable is automatically retracted and extended as the tethered aircraft flies; Furthermore, the aircraft ground station controls the flight of the tethered aircraft, plans the route, and monitors the status of the tethered aircraft.
[0008] The method for simulating interference using the long-distance support interference simulation system is special in that it includes the following steps: Step 1: Set the simulated flight route of the long-distance support jamming aircraft, and calculate the distance, azimuth and pitch angle of the long-distance support jamming aircraft relative to the radar at different times according to the flight route; Step 2, calculating the flight trajectory of the tethered aircraft according to the azimuth and pitch angles of the long-range support jammer aircraft relative to the radar at different times and the length of the tethered cable calculated in step 1; Step 3, the tethered aircraft mounted with the jamming simulator flies according to the flight trajectory calculated in step 2. During the flight, the jamming simulator simulates the long-range support jamming aircraft to generate jamming signals, and the tethered aircraft simulates the changes in the distance, azimuth and pitch angle relative to the radar during the flight of the long-range support jamming aircraft.
[0009] Furthermore, in step 1, the azimuth and pitch angles of the long-range support jamming aircraft relative to the radar at different times are calculated according to the flight route as follows: Decompose the route into multiple discrete route points, and calculate the distance, azimuth and pitch angle of the route point relative to the radar based on the radar coordinates and route point coordinates: Assume that the longitude, latitude and altitude of the radar are (L R , B R , H R ), the longitude, latitude and altitude of the route points are (L T ,B T ,H T), first, convert the coordinates of the two points into spatial rectangular coordinates (X R , Y R , Z R ) and (X T ,Y T ,Z T ), the conversion formula is as follows: (1), Then, according to (X R , Y R , Z R ) and (X T ,Y T ,Z T ) to obtain the local rectangular coordinates (x, y, z) of the radar station center, (2), (3), Where: R is a rotation matrix, which converts the relative coordinates of the radar and the track point in the spatial rectangular coordinate system into the coordinates of the track point in the local rectangular coordinate system of the radar station center. (4), Finally, the distance can be obtained by converting the local rectangular coordinates of the radar station center into the station center spherical coordinate system, that is, the distance of the route point relative to the radar. , azimuth , Pitch angle : (5); Furthermore, the step 2 is specifically as follows: Assume that the azimuth of the simulated target is , the pitch angle is The length of the mooring line is , according to the formula Solve the equation to get the local rectangular coordinates of the radar station center of the tethered aircraft , and then according to , , , calculate the space rectangular coordinates of the aircraft , and then according to , solve the equation to get the latitude and longitude of the aircraft .
[0010] The long-distance support interference simulation system of the present application uses a tethered aircraft for simulation. The aircraft and the interference simulator are powered by the aircraft ground station and can work for a long time, which can ensure that training can be repeated and improve training efficiency. The aircraft-mounted interference simulator is used to simulate the long-distance support interference at a close distance, which can reduce the interference power and improve the efficiency, and can also truly simulate the change of the interference angle. The cost is low, the test scene is simple to set up, and it is easy to implement. Compared with the simulation of mounting jammer pods, it provides a highly efficient teaching and training method for radar operators. Operators are not restricted by manned aircraft flight time, field, environment, support and other conditions, and can repeatedly train in the field until they master the relevant skills. Compared with ground simulation equipment, it overcomes the shortcoming of being unable to simulate different interference angles and can realistically simulate the changes of different interference angles in actual combat. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 Provides a block diagram of the long-range support jamming simulation system; Figure 2 Provide a block diagram for the interference simulator; Figure 3 It is a schematic diagram of the connection between the transceiver component and the digital frequency storage component; Figure 4 Schematic diagram of the interference angle simulation principle of a tethered aircraft. DETAILED DESCRIPTION
[0012] The following is a specific implementation of the present invention with reference to the accompanying drawings to further illustrate the composition of the present invention.
[0013] Embodiment 1. A remote support interference simulation system, such as Figure 1 As shown, it includes an interference simulator, the interference simulator is mounted on a tethered aircraft, and the interference simulator and the tethered aircraft are powered by an aircraft ground station; Wherein, the interference simulator receives radar signals, performs parameter measurement sample storage on the signals, and generates noise, deception and combined interference; The tethered aircraft flies according to the planned route, simulating the azimuth and pitch angle changes of the actual interfering aircraft.
[0014] Among them, Figure 2 As shown, the interference simulator includes a receiving antenna, a transmitting antenna, a transceiver component, a digital frequency storage component and a power amplifier component. The receiving antenna receives the radar signal and outputs it to the receiving branch of the transceiver component, and outputs the intermediate frequency signal to the digital frequency storage component after filtering, amplifying and frequency conversion. The digital frequency storage component measures and sorts the received intermediate frequency signal to generate an interfering intermediate frequency signal; The interfering intermediate frequency signal is frequency-converted through the transmitting branch of the transceiver component, converted into an interfering radio frequency signal, and then output to the power amplifier component; The power amplifier component amplifies the interference signal and outputs it to the transmitting antenna, which radiates it into space.
[0015] Among them, Figure 3As shown, the transceiver assembly includes a receiving branch and a transmitting branch, the receiving branch is electrically connected to the input end of the digital frequency storage assembly, the transmitting branch is electrically connected to the output end of the digital frequency storage assembly, the receiving branch can filter, amplify, and frequency-convert the received signal, and the transmitting branch can frequency-convert the received signal; The aircraft ground station provides power to the tethered aircraft and the interference simulator via a tethered cable, and the tethered cable is automatically retracted and released as the tethered aircraft flies; The aircraft ground station controls the flight of the tethered aircraft, plans the route, and monitors the status of the tethered aircraft.
[0016] Embodiment 2. The method of simulating interference using the remote support interference simulation system described in Embodiment 1 is as follows: Figure 4 As shown, the following steps are included: Step 1: Set the simulated flight route of the long-distance support jamming aircraft, and calculate the distance, azimuth and pitch angle of the long-distance support jamming aircraft relative to the radar at different times according to the flight route; Step 2, calculating the flight trajectory of the tethered aircraft according to the azimuth and pitch angles of the long-range support jammer aircraft relative to the radar at different times and the length of the tethered cable calculated in step 1; Step 3, the tethered aircraft mounted with the jamming simulator flies according to the flight trajectory calculated in step 2. During the flight, the jamming simulator simulates the long-range support jamming aircraft to generate jamming signals, and the tethered aircraft simulates the changes in the distance, azimuth and pitch angle relative to the radar during the flight of the long-range support jamming aircraft.
[0017] The azimuth and pitch angles of the long-range support jamming aircraft relative to the radar at different times are calculated in step 1 according to the flight route as follows: Decompose the route into multiple discrete route points, and calculate the distance, azimuth and pitch angle of the route point relative to the radar based on the radar coordinates and route point coordinates: Assume that the longitude, latitude and altitude of the radar are (L R , B R , H R ), the longitude, latitude and altitude of the route points are (L T ,B T ,H T ), first, convert the coordinates of the two points into spatial rectangular coordinates (X R , Y R , Z R ) and (X T ,Y T ,Z T ), the conversion formula is as follows: (1), Then, according to (X R , Y R , Z R ) and (X T ,Y T ,Z T ) to obtain the local rectangular coordinates (x, y, z) of the radar station center, (2), (3), Where: R is a rotation matrix, which converts the relative coordinates of the radar and the track point in the spatial rectangular coordinate system into the coordinates of the track point in the local rectangular coordinate system of the radar station center. (4), Finally, the distance can be obtained by converting the local rectangular coordinates of the radar station center into the station center spherical coordinate system, that is, the distance of the route point relative to the radar. , azimuth , Pitch angle : (5); Wherein, the step 2 is specifically as follows: Assume the azimuth of the simulated target is , the pitch angle is The length of the mooring line is , according to the formula Solve the equation to get the local rectangular coordinates of the radar station center of the tethered aircraft , and then according to , , , calculate the space rectangular coordinates of the aircraft , and then according to , solve the equation to get the latitude and longitude of the aircraft .
[0018] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the spirit of the present invention or exceeding the defined scope.
Claims
1. A remote support jamming simulation system, comprising a jamming simulator, characterized in that: The interference simulator is mounted on a tethered aircraft, and the interference simulator and the tethered aircraft are powered by an aircraft ground station; The interference simulator receives radar signals, performs parameter measurement and sample storage on the signals, and generates noise, deception and combined interference; the tethered aircraft flies according to the planned route to simulate the azimuth and pitch angle changes of the actual interfering aircraft.
2. A remote support jamming simulation system according to claim 1, characterized in that: The interference simulator includes a receiving antenna, a transmitting antenna, a transceiver component, a digital frequency storage component and a power amplifier component. The receiving antenna receives the radar signal and outputs it to the receiving branch of the transceiver component, and outputs the intermediate frequency signal to the digital frequency storage component after filtering, amplifying and frequency conversion. The digital frequency storage component measures and sorts the received intermediate frequency signal to generate an interfering intermediate frequency signal; the interfering intermediate frequency signal is frequency-converted through the transmitting branch of the transceiver component, converted into an interfering radio frequency signal and then output to the power amplifier component; the power amplifier component amplifies the interfering signal and then outputs it to the transmitting antenna to radiate it into space.
3. A remote support interference simulation system according to claim 2, characterized in that: The transceiver component includes a receiving branch and a transmitting branch. The receiving branch is electrically connected to the input end of the digital frequency storage component, and the transmitting branch is electrically connected to the output end of the digital frequency storage component. The receiving branch can filter, amplify, and frequency convert the received signal, and the transmitting branch can frequency convert the received signal.
4. A long-distance support interference simulation system according to claim 1, 2 or 3, characterized in that: The aircraft ground station provides power to the tethered aircraft and the interference simulator via a tethered cable, and the tethered cable is automatically retracted and released as the tethered aircraft flies.
5. A remote support jamming simulation system according to claim 4, characterized in that: The aircraft ground station controls the flight of the tethered aircraft, plans the route, and monitors the status of the tethered aircraft.
6. A method for simulating interference using the remote support interference simulation system of claim 5, characterized in that: The following steps are involved: Step 1: Set the simulated flight route of the long-distance support jamming aircraft, and calculate the distance, azimuth and pitch angle of the long-distance support jamming aircraft relative to the radar at different times according to the flight route; Step 2, calculating the flight trajectory of the tethered aircraft according to the azimuth and pitch angles of the long-range support jammer aircraft relative to the radar at different times and the length of the tethered cable calculated in step 1; Step 3, the tethered aircraft mounted with the jamming simulator flies according to the flight trajectory calculated in step 2. During the flight, the jamming simulator simulates the long-range support jamming aircraft to generate jamming signals, and the tethered aircraft simulates the changes in the distance, azimuth and pitch angle relative to the radar during the flight of the long-range support jamming aircraft.
7. The remote support interference simulation method according to claim 6, characterized in that: In step 1, the azimuth and pitch angles of the long-range support jamming aircraft relative to the radar at different times are calculated according to the flight route as follows: Decompose the route into multiple discrete route points, and calculate the distance, azimuth and pitch angle of the route point relative to the radar based on the radar coordinates and route point coordinates: Assume that the longitude, latitude and altitude of the radar are (L R , B R , H R ), the longitude, latitude and altitude of the route points are (L T ,B T ,H T ), first, convert the coordinates of the two points into spatial rectangular coordinates (X R , Y R , Z R ) and (X T ,Y T ,Z T ), the conversion formula is as follows: （1）， Then, according to (X R , Y R , Z R ) and (X T ,Y T ,Z T ) to obtain the local rectangular coordinates (x, y, z) of the radar station center, （2）， （3）， Where: R is a rotation matrix, which converts the relative coordinates of the radar and the track point in the spatial rectangular coordinate system into the coordinates of the track point in the local rectangular coordinate system of the radar station center. （4）， Finally, the local rectangular coordinates of the radar station center are converted into the station center spherical coordinate system to obtain the distance, that is, the distance of the route point relative to the radar. , azimuth , Pitch angle : (5).
8. The remote support interference simulation method according to claim 6, characterized in that: The step 2 is as follows: Assume the azimuth of the simulated target is , the pitch angle is The length of the mooring line is , according to the formula Solve the equation to get the local rectangular coordinates of the radar station center of the tethered aircraft , and then according to , , , calculate the spatial rectangular coordinates of the aircraft , and then according to , solve the equation to get the latitude and longitude of the aircraft .