A tracking radar decoupling joint test system and method

Abstract

The application relates to a tracking radar decoupling combined test system, which comprises a scanning frame which is movable, a echo emission device which is connected with a signal source and fixed on the scanning frame to follow the scanning frame to move and used for simulating a target, a radar which is fixed on a rotating table to simulate disturbance of the radar fixed on a satellite through rotation of the rotating table, a host computer which is connected with the rotating table and used for controlling the rotating table, and a radar test device which is connected with the host computer at an input end, acquires angular velocity information sent by the host computer to the rotating table, and is connected with the radar at an output end to output the angular velocity information to the radar and used for simulating angular velocity information output by a gyroscope of a satellite platform; the radar executes decoupling processing according to the angular velocity information and outputs position information of the simulated target in real time for testing. The application firstly proposes to test the decoupling function of the radar in a system mode, simultaneously realizes combined testing of high-precision radar tracking targets and decoupling platform disturbance, and can simulate real use working conditions.

Description

Technical Field

[0001] This invention relates to the field of monopulse radar tracking technology, and in particular to a tracking radar decoupling joint testing system and method. Background Technology

[0002] As the tracking accuracy of domestic spaceborne radar continues to improve, platform disturbances can affect radar tracking performance. High-precision tracking radar utilizes the platform's gyroscope information for decoupling, which places new demands on radar testing systems and methods.

[0003] Currently, existing technologies have solved the problem of real-time stable radar tracking of satellites in orbit by using decoupling methods, but no relevant technologies for radar decoupling testing have been disclosed. This invention utilizes existing radar testing systems and can achieve high-precision radar tracking and decoupling joint testing without investing in hardware modifications. Summary of the Invention

[0004] To achieve the above objectives, the present invention proposes a tracking radar decoupling joint test system, comprising: a tracking radar decoupling joint test system, characterized in that it comprises:

[0005] The scanning frame is movable;

[0006] An echo transmitter, which is communicatively connected to the signal source and fixed on the scanning frame, moves with the scanning frame to simulate a target;

[0007] The radar, which is fixed on a turntable, uses the turntable to achieve yaw and altitude movement, and is used to simulate the disturbance of radar fixed on a satellite;

[0008] The host computer is connected to the turntable signal and is used to control the turntable;

[0009] The radar testing equipment has an input end connected to a host computer to acquire angular velocity information sent from the host computer to the turntable; and an output end connected to the radar signal to output the acquired angular velocity information to the radar, which is used to simulate the angular velocity information output by the gyroscope of a satellite platform.

[0010] The radar performs decoupling processing based on the received angular velocity information and outputs the simulated target's position information in real time for testing.

[0011] Furthermore, the target echo signal source of the signal output includes target delay and Doppler information, which is used to transmit to the echo transmitting device to simulate the target distance and velocity.

[0012] Furthermore, the tracking radar decoupling joint test system is placed in a microwave anechoic chamber.

[0013] Furthermore, the host computer outputs yaw and altitude angular velocity information to the radar test equipment via the network using UDP.

[0014] A joint testing method for decoupling tracking radar, implemented using the above-mentioned system, includes the following steps:

[0015] S1. The echo transmitter emits a target echo signal to simulate the target distance and speed; at the same time, it controls the scanning frame to move along the yaw direction and altitude direction, thereby moving the echo transmitter to simulate the target position change.

[0016] S2. The radar is powered on and set to working status. The tracking echo transmitter outputs target position information, including target distance, speed, and angle, in real time.

[0017] S3. The turntable rotates along the yaw and altitude directions to simulate satellite platform disturbances, and the host computer outputs the angular velocity information in the yaw and altitude directions to the radar test equipment.

[0018] S4. The radar test equipment will receive and output yaw and altitude angular velocity information to the radar; the radar receives the yaw and altitude angular velocity information and performs decoupling operation.

[0019] S5. Based on the target position information, scanning frame motion information and turntable rotation information output by the radar in real time, evaluate the tracking decoupling effect to complete the decoupling joint test.

[0020] Furthermore, the host computer outputs yaw and altitude angular velocity information to the radar test equipment via the network using UDP.

[0021] Furthermore, the radar test equipment receives and outputs angular velocity information in the yaw and altitude directions, performs protocol conversion, and outputs the angular velocity information in the yaw and altitude directions to the radar using the serial port 422 method.

[0022] Furthermore, the host computer performs multiple filtering processes on the angular velocities of yaw and pitch to improve the accuracy of the angular velocity.

[0023] Furthermore, the host computer performs differential processing on the yaw and elevation angles to obtain the angular velocities of the yaw and elevation rotations.

[0024] This invention proposes for the first time a system test for radar decoupling function, which has the following beneficial effects:

[0025] This invention modifies existing radar systems to avoid the use of high-precision gyroscopes, and is characterized by ease of implementation and low cost.

[0026] This invention simultaneously achieves joint testing of high-precision radar target tracking and decoupling platform disturbances, simulating real-world operating conditions. Attached Figure Description

[0027] Figure 1 This is a diagram of the joint test environment for tracking radar decoupling according to the present invention;

[0028] Figure 2 This is a flowchart of the joint test procedure for tracking radar decoupling according to the present invention;

[0029] Figure 3 Generate a flowchart for angular velocity excitation. Detailed Implementation

[0030] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the tracking radar decoupling joint testing system and method proposed in this invention. The advantages and features of this invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the embodiments of this invention. Please refer to the drawings to make the objectives, features, and advantages of this invention more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this invention, should still fall within the scope of the technical content disclosed in this invention.

[0031] like Figure 1 As shown, the tracking radar decoupling joint test system provided by the present invention is placed in a microwave anechoic chamber 8 and includes:

[0032] Scanner 1 is movable;

[0033] The echo transmitter 2 is communicatively connected to the signal source 3 and is fixed on the scanning frame 1, moving with the scanning frame 1 to simulate a target; the echo transmitter 2 can be a horn.

[0034] Radar 4 is fixed on turntable 5 by tooling. Radar 4 is a high-precision tracking radar. Turntable 5 is a two-dimensional turntable that can rotate along the yaw and altitude directions, driving the high-precision tracking radar to rotate and simulating satellite platform disturbances.

[0035] The host computer 6 is connected to the turntable 5 via signal and is used to control the rotation of the turntable 5;

[0036] The radar testing equipment 7 has an input end connected to the host computer 6 to acquire the angular velocity information sent by the host computer 6 to the turntable 5; and an output end connected to the radar 4 to output the acquired angular velocity information to the radar 4 to simulate the angular velocity information output by the satellite platform gyroscope.

[0037] Radar 4 performs decoupling processing based on the received angular velocity information and outputs the simulated target's position information in real time for testing.

[0038] Furthermore, the target echo signal output by the signal source 3 includes target delay and Doppler information, which is used to transmit to the echo transmitting device 2 to simulate the target distance and speed.

[0039] Furthermore, the host computer 6 outputs yaw and altitude angular velocity information to the radar test device 7 via the network using UDP (User Datagram Protocol). The radar test device 7 receives the output yaw and altitude angular velocity information, performs protocol conversion, and outputs the yaw and altitude angular velocity information to the radar 4 using a serial port 422 method. The radar 4 receives the yaw and altitude angular velocity information and performs decoupling operations to reduce the impact of platform disturbances on its pointing during target tracking.

[0040] This invention also proposes a joint testing method for decoupling tracking radar, such as... Figure 2 As shown, it includes the following steps:

[0041] S1. By turning on the signal source 3, the target echo signal containing the target delay and Doppler information is output to the echo transmitter 2, and the echo transmitter 2 emits the target echo signal to simulate the target distance and target speed; at the same time, the scanning frame 1 is controlled to move along the yaw direction and the altitude direction, thereby driving the echo transmitter 2 to move and simulate the target position change.

[0042] S2, Radar 4 is powered on and set to working status, stably tracks echo transmitter 2, and outputs target position information including target distance, speed and angle in real time;

[0043] S3, turntable 5 rotates along the yaw and altitude directions to simulate satellite platform disturbances. The host computer 6 transmits the angular velocity information of the yaw and altitude directions to the radar test equipment 7 via the network in UDP mode. The host computer performs multiple filtering processes on the angular velocities of yaw and altitude rotation to improve the accuracy of the angular velocity. It also performs differential processing on the yaw and altitude angles to obtain the angular velocities of yaw and altitude rotation.

[0044] S4 and radar test equipment 7 perform protocol conversion on the angular velocity information in the yaw and altitude directions, and output the angular velocity information in the yaw and altitude directions to radar 4 using the serial port 422 method; radar 4 performs decoupling operation based on the received angular velocity information in the yaw and altitude directions.

[0045] S5. Based on the target position information, scanning frame motion information and turntable rotation information output by radar 4 in real time, evaluate the tracking decoupling effect, thereby completing the decoupling joint test.

[0046] like Figure 3 As shown, the angular velocity excitation generation process further describes how the decoupled joint test system achieves simulation testing. It mainly includes the following: On-orbit mission scenario excitation; controlling turntable 5 to simulate satellite rotation; controlling scanning frame 1 to simulate target motion, thereby achieving on-orbit operational condition simulation verification; The host computer 6, based on the yaw and elevation angles of turntable 5, performs differential processing on the angles to obtain the angular velocities of yaw and elevation rotation; the angular velocities of yaw and elevation rotation are subjected to multiple filtering processes to further improve angular velocity accuracy. Then, the angular velocities of yaw and elevation rotation are packaged according to a protocol and sent to radar test equipment 7 via the network using UDP; finally, after receiving the angular velocities of yaw and elevation rotation, radar test equipment 7 unpacks and repacks them, sending them to radar 4 via serial port 422.

[0047] This invention proposes for the first time a system test for radar decoupling function, which has the following beneficial effects:

[0048] This invention modifies existing radar systems to avoid the use of high-precision gyroscopes, and is characterized by ease of implementation and low cost.

[0049] This invention simultaneously achieves joint testing of high-precision radar target tracking and decoupling platform disturbances, simulating real-world operating conditions.

[0050] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A tracking radar decoupling joint test system, characterized in that, Include: The scanning frame (1) is movable; The echo transmitter (2) is connected to the signal source (3) and fixed on the scanning frame (1) to move with the scanning frame (1) to simulate the target; Radar (4), which is fixed on turntable (5), achieves yaw and altitude movement through turntable (5) to simulate the disturbance of radar (4) fixed on satellite; The host computer (6) is connected to the turntable (5) by signal and is used to control the rotation of the turntable (5); The radar test equipment (7) has an input end connected to the host computer (6) to obtain the angular velocity information sent by the host computer (6) to the turntable (5); and an output end connected to the radar (4) signal to output the obtained angular velocity information to the radar (4) to simulate the angular velocity information output by the satellite platform gyroscope. The radar (4) performs decoupling processing based on the received angular velocity information and outputs the position information of the simulated target in real time for testing.

2. The tracking radar decoupling joint test system as described in claim 1, characterized in that, The target echo signal output by the signal source (3) contains target delay and Doppler information, which is used to transmit to the echo transmitter (2) to simulate the target distance and speed.

3. The tracking radar decoupling joint test system as described in claim 1, characterized in that, The tracking radar decoupling joint test system is placed in a microwave anechoic chamber (8).

4. The tracking radar decoupling joint test system as described in claim 1, characterized in that, The host computer (6) outputs yaw and altitude angular velocity information to the radar test equipment (7) via the network in UDP mode.

5. A method for decoupling and jointly testing a tracking radar, implemented using the system described in any one of claims 1 to 4, characterized in that, Includes the following steps: S1. The echo transmitter (2) emits a target echo signal to simulate the target distance and target speed; at the same time, it controls the scanning frame (1) to move along the yaw direction and the altitude direction, thereby driving the echo transmitter (2) to move and simulate the target position change. S2. The radar (4) is powered on and set to working status. The tracking echo transmitter (2) outputs target position information including target distance, speed and angle in real time. S3, the turntable (5) rotates along the yaw and altitude directions to simulate satellite platform disturbances, and the host computer (6) outputs the angular velocity information in the yaw and altitude directions to the radar test equipment (7); S4. The radar test equipment (7) receives and outputs the yaw and altitude angular velocity information to the radar (4); the radar (4) receives the yaw and altitude angular velocity information and performs decoupling operation. S5. Based on the target position information, scanning frame motion information and turntable rotation information output by the radar (4) in real time, evaluate the tracking decoupling effect and thus complete the decoupling joint test.

6. The tracking radar decoupling joint testing method as described in claim 5, characterized in that, The host computer (6) outputs yaw and altitude angular velocity information to the radar test equipment (7) via the network in UDP mode.

7. The tracking radar decoupling joint testing method as described in claim 5, characterized in that, The radar test equipment (7) receives and outputs yaw and altitude angular velocity information, performs protocol conversion, and outputs the yaw and altitude angular velocity information to the radar (4) using the serial port 422 method.

8. The tracking radar decoupling joint testing method as described in claim 5, characterized in that, The host computer (6) performs multiple filtering processes on the angular velocities of yaw and pitch rotation to improve the accuracy of angular velocity.

9. The tracking radar decoupling joint testing method as described in claim 5, characterized in that, The host computer (6) performs differential processing on the yaw and elevation angles to obtain the angular velocities of the yaw and elevation rotation.

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