Short-range Radar Target The Signal Simulator Technology Research

Short-range radar target simulator, which can simulate the radar signals that contain information of target, is the key of short-range radar simulation system. It is used in radar system to design, analysis and testing. Analysis and design of target echo signal in short-range radar simulator is studied primarily in the paper. The main research contents of the thesis are as follows:A kind of video signal simulator is composed of DSP and FPGA.A DDS source embedded in FPGA is added to generate orthogonal modulation data as Doppler signal in order to do the system self-check. The echo signal which including distance simulation, speed simulation, and cutter signal is realized by FPGA.The DSP application program is developed, which includes PCI interfaces, EMIF interfaces, EDMA data moving, FPGA interface control that can directly receive external simulation target echo signal by DSP or echo data generated by host computer.Complete the corresponding host application design, though the host setting radar echo simulation signal parameters,control DSP and FPGA target distance and speed simulation, produce different parameters of the simulation of the echo signal.At last the radar target echo signal simulation platform which build by the PC, TMS320C6416PA interface card, signal generator and oscilloscope.The feasibility of design is proved to be true by the tests results.