基于DSP+FPGA的LFMCW雷达测距信号处理系统设计  

Design of LFMCW radar ranging signal processing system based on DSP + FPGA

作　　者：陈林军[1] 涂亚庆[1] 刘鹏[1] 沈艳林[1] 

机构地区：[1]后勤工程学院后勤信息与军事物流工程系,重庆401311

出　　处：《传感器与微系统》2015年第12期94-96,100,共4页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(61271449;61302175);重庆市自然科学基金资助项目(CSTC2013JCYJA40030);重庆市研究生科研创新项目(CYB14100)

摘　　要：为解决计算量大的高精度线性调频连续波(LFMCW)雷达测距信号处理算法难以在线验证的问题,提出一种基于数字信号处理器(DSP)和现场可编程门阵列(FPGA)双核架构的雷达测距信号处理系统方案,并完成了软硬件设计和测距算法嵌入。设计方案以DSP为信号处理核心,FPGA为外围设备控制核心。采用C语言实现了基于相位匹配法的LFMCW雷达测距算法在DSP中的嵌入,采用VHDL语言实现FPGA功能模块。在线测距实验结果表明:各功能模块工作正常,基于相位匹配法的测距算法精度高。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.

关 键 词：数字信号处理器 现场可编程门阵列 雷达测距 信号处理 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]