一类新的脉冲压缩信号的旁瓣抑制

Side-lobe suppression of one kind of new pulse compression signal

报导了一类由二相编码信号与线性调频信号组合而成的新的脉冲压缩信号以及其旁瓣抑制方法。介绍了该类信号的匹配滤波器输出、多卜勒特性、Hamming加权输出波形等方面的性能 ,模拟了当采用 8位 A/D和 D/A变换器进行双加权时的脉压输出以及其多卜勒特性 ,给出了其优化结果。分析证明 ,该类信号分别具有线性调频信号和二相编码信号的优点 。

A method used in pulse compression technology for side lobe suppression of one kind of new pulse compression radar signal obtained by combining chirp waveform with binary pseudorandom sequence is discussed. In the method, the parameter of filter is obtained by the desired wave of compression pulse. First, several main characteristics of the radar signal are discussed, such as the response weighting in Hamming or not of the matching filter, Doppler frequency. Second, Through the computer simulation, the response and Doppler properies and weighting with the method which we call double weighting are discussed on the condition of 8 bits A/D and D/A converters. At the same time, the optimized conclusion is given. Those are showing this kind of signal with advantages of LFM and BC satisfies practical requirement through the double weighting.