Abstract
In order to overcome the shortcomings of motion target range — velocity coupling in the LFMCW (Linear Frequency Modulation Continuous Wave) radar mechanism, based on the relevant theoretical research results of LFMCW radar signal processing method, combined with the actual needs of the system, a signal processing method based on multi cycle LFMCW radar “beat — Fourier spectral analysis — MID” structure is put forward, and the distance — velocity decoupling is realized. It is done from the system scheme design, acquisition circuit analysis, and algorithm theory research to the final algorithm DSP realization process. The experimental results show that this method can achieve target detection and parameter estimation, and it can improve the ranging and speed measurement accuracy, and realize the distance — velocity decoupling of LFMCW radar. As a result, it is concluded that the method proposed in this study is simple and feasible, and the measurement accuracy is high, so it can greatly improve the efficiency of radar signal processing.
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