Anti-collision millimeter wave radar target signal simulation system and method based on quadrature modulation system

Abstract

The invention discloses an anti-collision millimeter-wave radar target signal simulation system and method based on an orthogonal modulation system, comprising: a radio frequency conversion transceiver module, the radio frequency frequency conversion transceiver module receives the linear frequency sweep signal transmitted by the anti-collision millimeter-wave radar and performs Frequency conversion to obtain intermediate frequency signals; quadrature modulation module, the quadrature modulation module receives the intermediate frequency signal output by the radio frequency conversion transceiver module, as the local oscillator signal of the quadrature modulator; the baseband signal processing module, through any loading speed and distance mode Frequency and phase remapping of speed and distance can simulate any scene, and the simulated distance or speed signal is divided into two orthogonal channels and output to the quadrature modulation module; the present invention is based on the quadrature modulation system for anti-collision millimeter-wave radar target signal simulation method Based on the software radio and RF frequency conversion transceiver architecture, it adopts the "full digital baseband + RF frequency conversion transceiver" mode, and the analog functions are all realized by digital, which has the advantages of small size, low cost, practicality and convenience.

Description

technical field [0001] The invention relates to the technical field of anti-collision millimeter-wave radar target signal simulation, in particular to a system and method for anti-collision millimeter-wave radar target signal simulation based on an orthogonal modulation system. Background technique [0002] The traditional anti-collision millimeter-wave radar target signal simulator uses the signal delay line method, which is large in size and high in cost. The distance and speed cannot be continuously simulated in a wide range. It can only provide fixed-point simulation, which cannot meet the comprehensive requirements of the anti-collision radar development process and experiments. Test requirements. [0003] Anti-collision millimeter-wave radar uses millimeter-level radar to quickly and accurately obtain information around the vehicle body, and based on the detected information, it performs target tracking, identification and classification, and makes corresponding warnin...

AI Technical Summary

Problems solved by technology

[0006] 1. The traditional anti-collision millimeter wave radar target simulator adopts the delay line method, which is large in size, high in cost, not light in weight, poor in flexibility and convenience, and very impractical

[0007] 2. The delay line method can only provide discrete fixed-distance simulation, the range of distance simulation is limited, and there is no continuous distance simulation function, which cannot meet the needs of wide-range continuous simulation.

[0008] 3. The delay line method cannot be used for arbitrary speed simulation, and the simulation scene is single. It cannot realize high-precision continuous and complex mixed simulation of distance and speed, and cannot realistically reflect the real working environment.

[0009] 4. The traditional delay line method requires additional delay line modules when simulating multiple targets. To simulate several targets, it is necessary to add corresponding delay line modules. The cost and volume increase exponentially, which is not practical.

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