Since the product of time width and band width of single carrier frequency pulse signal is close to one, and wide time width and band width can not be obtained simultaneously, the concept of pulse compression is introduced with the matching filter theory. LFM signal and phase-coded signal are the typical pulse-compression signals, which have large time width and band width product. They also satisfy the two indexes of distance and velocity resolutions. The weighted pulse-compression capability of LFM signal is analyzed with Matlab language. The simulation result is presented and analysed. It is found that the weighted window pulse-compression can effectively lower the sidelobe level of compression output and improve the main sidelobe ratio.%由于单载频脉冲信号的时宽带宽乘积接近于1,大的时宽和带宽不可兼得,在匹配滤波器理论下引入脉冲压的概念.线性调频信号和相位编码信号是2种典型的脉冲压缩信号,它具有大的时宽带宽积,满足距离分辨力和速度分力2项指标,在此首先介绍了LFM信号脉压分析,进而引出加权处理降低旁瓣.采用Matlab对LFM信号的加权脉压性进行了详细分析,在给出仿真结果的同时,对结果进行了分析,可以看出进行加窗脉压可以有效地降低压缩输出中的旁瓣平,提高主旁瓣比,取得了较好的效果.
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