LFMCW Surveillance Radar Signal Processing Algorithms Analysis And Hardware Design

LFMCW (Linear Frequency Modulated Continuous Wave) radar is very suitable for battlefield surveillance applications, for the advantages of the distance-no blind spots, high range resolution, low interception rate, low emission peak power, small size and light weight, etc. By the widespread concern at home and abroad in recent years, the theory and applications have been developed rapidly. The range of LFMCW radar is much shorter than pulse radar, it is very suitable for short-range applications. For the above advantages of LFMCW radar, the Ground Surveillance Radar designed in this paper uses the LFMCW principle.At present, research on LFMCW radar signal processing is mainly concentrated in the target detection and parameter extraction, and have made some research. On the other hand, the rapid development of digital signal processor simplifies the implementation of LFMCW radar. This thesis have made a theoretical analysis and integration on the achievements. At last, we have changed these research results into practical applications.This paper introduced the principle of LFMCW radar. The procedure of entire signal processing is simulated by MATLAB. The simulation verified the correctness and feasibility of the signal processing and provide the reference data for the hardware debugging. According to the research results of the LFMCW radar signal processing theory and the actual demand of short-range surveillance radar, we developed the signal processing platform with high-performance DSP and FPGA. It has achieved the targets with range10km and maximum detectable velocity50m/s. The work of this paper includes hardware system design, circuit design, the peripheral interface and the implementation of algorithm. This design has laid a theoretical and practical foundation for future short-range ground surveillance radar.