Multi-target signal generation method and RF multi-target signal source

A signal generation, multi-target technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of inability to meet radar testing, low fidelity of false targets, etc., to meet the needs of radar testing and improve the effect of fidelity

Active Publication Date: 2016-08-24
BEIJING ZHENXING METROLOGY & TEST INST
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Radio frequency storage technology is widely used in radar target simulation and interferenc

Method used

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  • Multi-target signal generation method and RF multi-target signal source
  • Multi-target signal generation method and RF multi-target signal source

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Embodiment one

[0021] refer to figure 1 , this embodiment provides a multi-target signal generation method, including:

[0022] Step S101, detecting whether a radar radio frequency signal or an active trigger signal is received;

[0023] Step S102, if a radar radio frequency signal is received, then generate a continuous wave signal, and process the radar radio frequency signal to generate a radar intermediate frequency signal, calculate a Doppler frequency value according to the radar intermediate frequency signal and the moving speed of the target, and convert the The Doppler frequency value, the continuous wave signal and the radar intermediate frequency signal are superimposed to generate the first multi-target signal;

[0024] Step S103, if an active trigger signal is received, actively generate multiple digital signals according to the active trigger signal, and perform superposition processing on the preset Doppler frequency value and the multiple mathematica...

Example Embodiment

[0044] Embodiment two

[0045] refer to figure 2 , this embodiment provides a radio frequency multi-target signal source, including:

[0046] The radio frequency module 201 is used for receiving the radio frequency signal transmitted by the radar, and sending the first multi-target signal or the second multi-target signal;

[0047] The signal processing module 202 is configured to generate a continuous wave signal according to the radar radio frequency signal, and process the radar radio frequency signal to generate a radar intermediate frequency signal, and calculate a Doppler frequency value according to the radar intermediate frequency signal and the moving speed of the target, and convert The Doppler frequency value, the continuous wave signal and the radar intermediate frequency signal are superimposed to generate a first multi-target signal;

[0048] or,

[0049] The multi-channel digital signal is actively generated according to the active trigger signal, and the pr...

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Abstract

The invention provides a multi-target signal generation method and an RF multi-target signal source. The multi-target signal generation method comprises the steps of: detecting whether a radar RF signal or an active trigger signal is received; generating a continuous wave signal if the radar RF signal is received, processing the radar RF signal to generate a radar intermediate frequency signal, calculating a Doppler frequency value according to the radar intermediate frequency signal and a target moving speed, carrying out superposition processing on the Doppler frequency value, the continuous wave signal and the radar intermediate frequency signal, and generating a first multi-target signal; generating multi-path digital signals actively according to the active trigger signal if the active trigger signal is received, carrying out superposition processing on a preset Doppler frequency value and the multi-path digital signals, and generating a second multi-target signal. The multi-target signal generation method and the RF multi-target signal source provided by the invention can effectively improve verisimilitude of target simulation, and satisfy radar test requirements.

Description

technical field [0001] The invention relates to the field of electronic countermeasures, in particular to a multi-target signal generation method and a radio frequency multi-target signal source. Background technique [0002] The radio frequency multi-target signal source is a device used in radar ground testing. It can realistically simulate multiple targets and false targets. It has the ability to detect, search and track targets in the echo of the test radar system. It can be used to test the radar system to distinguish real The ability to detect target echoes and false targets, and to spot real targets against a background of false targets, helps improve the realism of radar system testing. [0003] With the rapid development of information technology and electronic countermeasures technology, active-passive composite system radar is more and more widely used, and the target environment faced by radar is becoming more and more complex. The information of multiple targets...

Claims

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Application Information

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IPC IPC(8): G01S7/40
Inventor 王斌关文硕李亮游福初李永翔
Owner BEIJING ZHENXING METROLOGY & TEST INST
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