FMCW雷达系统的双模方向判断模块研究  

Research on dual mode direction judging module in FMCW radar system

作　　者：戚昊琛[1] 胡智文[2] 张鉴[1] 

机构地区：[1]合肥工业大学电子科学与应用物理学院,合肥230009 [2]浙江传媒学院新媒体学院,杭州310018

出　　处：《电子测量与仪器学报》2014年第5期486-492,共7页Journal of Electronic Measurement and Instrumentation

基　　金：东南大学MEMS教育部重点实验室开放研究基金;合肥工业大学科学发展基金(J2014HGXJ0091;J2014HGXJ0082);浙江省自然科学基金(LY13F010006)资助项目

摘　　要：方向判断模块是雷达防撞系统中的一个重要功能模块。为实现该模块,完成了对差频信号频率及相位与目标运动方向关系的理论推导,得到并验证了频率及相位与目标靠近或远离关系的2种判定法则。利用这2种法则,设计了基于频率和相位变化判断目标运动方向的双模判断模块。该模块集成了2种模式的方向判断电路,连接计频器得到用于DSP计算的频率,并利用光电报警器直观显示目标的运动方向,可极大地提高方向判断的准确性。对电路的模拟结果验证了利用双模理论实现方向判断模块设计的可行性。The direction judging module is an important functional portion in radar collision-avoidable system. To realize this module, the theoretical derivation of difference frequency, as well as phase to object-moving direction, is firstly performed. The relationships of frequency-direction and phase-direction are successfully established. Based on these two rules, a dual mode object-moving direction judging module is designed, which integrates two direction judging circuits and frequency counter, and the moving direction result can be displayed by photoelectric alarm. The presented module can improve the direction judging accuracy. And furthermore, the simulations of circuits validate the feasibility to realize the hardware module using dual mode rules.

关 键 词：FMCW 雷达防撞系统 方向判断 电路模块 

分 类 号：TN952[电子电信—信号与信息处理]