Software And Hardware Design Of Signal Processing For LFMCW Radar

The linear frequency modulation continumous wave (LFMCW) radar has a few advantages,such as good performance of anti-interference,without blind area in range,higher range resolution and sensitivity.It has great development and study implications.This paper introduces the theory of LFMCW firstly,We analyse the characteristics of the signal of symmetrical triangle LFMCW radar.We can realize MTI of LFMCW radar with the method of making state target cancellation in frequency domain,based on the research of the characteristics of time domain and frequency domain for emission signal,echo signal and beat signal of LFMCW.On this basis,we can also realize MTD with the method of two-dimensional FFT.We can eliminate the interference of clutter,improve the SNR and detection performance in corresponding simulation experiment,based on the method of multicycle accumulation and CFAR of adjacent cell detection.On the basis of the work above, we can design a complete signal processor system of LFMCW radar,including the selection of major devices,design of power supply,design of clock and design of interface. On the basis of the result of computer simulation,we can finish the design of software simulation for some algorithm with ADSP TS201S.