扩谱雷达性能研究与设计

System Analysis and Design of Spread Spectrum Radar

综合应用扩谱技术和雷达技术 ,对连续波扩谱雷达进行系统性能研究和设计。在系统设计中 ,采用伪随机码调制信号作为发射信号 ,在接收时利用扩谱码的自相关函数特性进行测距 ,使用锁相环实现频率的捕获与跟踪 ,采用一种多环路分段法进行码的快速捕获 ,本系统具有抗干扰能力强 ,距离分辨力和测距精度以及测速精度高 ,反应时间快 ,设备简单 。

A type of spread spectum(SS)CW radar is studied and designed in this paper.In this system,pseudo random code is used as SS code.Phase lock(PLL) employed to realize frequency acquisition and track,and a kind of mulit loop segment method fast code acquisition.This system has many advantages,such as quality,simple and easy realization,good robustness against noise,fast reaction and so on.