脉内调频脉冲合成宽带信号及相位误差分析  

Wideband Signal Forming by Stepped Chirp and Phase Error Analysis

作　　者：宋岳鹏[1] 杨汝良[1] 

机构地区：[1]中国科学院电子学研究所

出　　处：《现代雷达》2007年第8期56-59,共4页Modern Radar

摘　　要：高距离分辨率需要大的信号带宽,在获得宽带信号的方法中,研究主要是采用单发射机的顺次发射接收情况。该文提出了采用多发射机多接收机情况下同步脉内调频脉冲串合成宽带信号的方法,计算机仿真结果证明了其可行性和有效性,并得到了较好的方位模糊特性。重点分析了通道间相位误差对子脉冲合成后压缩结果的影响,提出了一种采用相关方法实现多通道间相位均衡的误差校正技术。High range resolution needs wide-band signals. Most reported research into wideband signal adopts stepped chirp using single transmitter. In this paper, we propose a method using multiple transmitter-receivers which can transmit and receive signal synchronously to obtain wideband signal. The computer simulation shows the feasibility and effectiveness of this method, and the azimuth ambiguity performance is much better. We analyze the effects which result from the phase error between different channels, and a error correction method was proposed to achieve phase balance between channels.

关 键 词：合成孔径雷达 脉内调频脉冲 延时误差 

分 类 号：TN78[电子电信—电路与系统]