LFMCW雷达的差频信号采集系统设计  

Design of beat signal acquisition system for LFMCW radar

作　　者：王斯盾 涂亚庆[1] 牟泽龙 闫隆基 刘鹏[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》2017年第7期93-95,99,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(CSTC2015JCYJBX0017);重庆市首批百名学术学科领军人才专项项目(渝教人2012-44号)

摘　　要：差频信号采集系统是线性调频连续波(LFMCW)雷达的核心部件之一。针对国产某新型LFMCW雷达传感器,设计并实现了基于C8051F120的LFMCW雷达差频信号采集系统,包括调制信号产生模块、差频信号采集模块以及串口通信模块。主要实现的功能有:产生非线性校正后的锯齿波调制信号;采集雷达差频信号并搭建二阶有源带通滤波器进行放大滤波;发送差频信号至上位机等。实验验证了LFMCW雷达差频信号采集系统的有效性。Beat signal acquisition system is one of the core components of linear frequency modulated continuous wave（LFMCW） radar. A LFMCW radar beat signal acquisition system based on C8051F120 is designed and implemented for a new LFMCW radar sensor, which includes modulation signal generation module, beat signal acquisition module and serial communication module. It can complete the functions such as the generation of non- linear correction of the sawtooth wave modulation signal;radar beat signal acquisition and build a second-order active baudpass filter for amplification ; sending beat signal to the host computer and so on. The experimental results verify the effectiveness of the LFMCW radar beat signal acquisition system.

关 键 词：线性调频连续波雷达 差频信号 采集系统 C8051F120 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]