To solve the problem that online verification is difficult because large amount of calculation of high precision LFMCW radar ranging signal processing algorithm

a scheme of radar ranging signal processing system based on DSP and FPGA is proposed

and software and hardware are designed and ranging algorithm is embedded.The DSP works as signal processing core and FPGA conducts as peripheral devices control core. The phase match method-based ranging algorithm realized by C language is embedded in DSP

while function modules of FPGA are described by VHDL. Online ranging experimental results show that each functional module works as expected and the phase match method-based ranging algorithm gains high precision.