24GHz车载防撞雷达及中频信号处理电路设计  

Design of 24 GHz automotive collision avoidance radar and intermediate frequency signal processing circuit

作　　者：姜兴[1] 刘涛[1] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《微型机与应用》2014年第1期56-59,共4页Microcomputer & Its Applications

基　　金：广西科学研究与技术开发项目(桂科攻0996028)

摘　　要：介绍了FMCW雷达测距、测速原理和系统结构;并针对24 GHz线性调频连续波汽车防撞雷达系统的信号处理问题,对雷达后端中频信号处理电路进行了相关的研究及实现。设计了相应的滤波电路、增益控制放大电路,并取得了良好的效果。该设计提高了防撞雷达系统的测量精度和距离,对汽车主动安全性能起到一定积极作用。The principle of the measurement of the distance and velocity of the FMCW radar and the structure of the system are described in this paper. To solve the problems of the signal processing of the 24 GHz linear frequency modulation continuous wave automotive anti-collision radar system, the back-end intermediate frequency signal processing circuit is researched and implemented. The corresponding filter circuit and gain control amplifier circuit are designed , and a good result is achieved in improving the measure accuracy and distance of the collision avoidance radar system. This design is useful to improve the performance of the automobile active safety to some extent.

关 键 词：防撞雷达 信号处理 滤波 AGC 放大 

分 类 号：TN949.7[电子电信—信号与信息处理] U491.62[电子电信—信息与通信工程]