步进频雷达的距离误差提取方法  

Range Error Extraction Method for Stepped Frequency Radars

作　　者：苏宏艳[1] 何佩琨[1] 

机构地区：[1]北京理工大学电子工程系,北京100081

出　　处：《电讯技术》2005年第6期84-87,共4页Telecommunication Engineering

摘　　要：在宽带系统中如何测距是高分辨雷达亟待解决的问题,本文针对步进频信号提出了一种新的距离误差提取方法。该方法利用步进频脉压结果的泄漏,首先建立脉压包络次大值与目标距离的对应表,然后用实际脉压结果的归一化次大值查表得到目标的距离。仿真结果表明,这种方法与宽度最优波门的波形分析法性能相当,且抗相邻散射点干扰的能力更强。It is a key problem that how to measure range with wide bandwidth system for High Range Resolution Radars （HRRRs）. This paper proposes a new method, which uses energy leakage after IFFT, to measure range for radar with stepped frequency signal. A table, which establishes the relation between secondary maximum peak and range, is stored in ram firstly. And then the range can be obtained according to the table using the unitary secondary maximum peak after IFFT. The simulation results indicate that the performance of this method is equivalent to that of waveform analysis method with optimal gate width. In addition, the method proposed works better than waveform analysis method when a disturbance from adjacent scatterer exists.

关 键 词：步进频雷达 距离误差提取 归一化次大值测距法 

分 类 号：TN95[电子电信—信号与信息处理]