一种相位编码信号和失配滤波器联合优化方法  

Joint optimization of the phase coded waveform and mismatched filter

作　　者：徐磊磊[1,2] 周生华[1,2] 刘宏伟[1,2] 马林[2] XU Leilei;ZHOU Shenghua;LIU Hongzvei;MA Lin(National Key Lab.of Radar Signal Processing,Xidian Univ.,Xi5an 710071,China;;Collaborative Innovation Center of Information Sensing and Understanding,Xidian Univ.,Xi5an 710071,China)

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071 [2]西安电子科技大学信息感知技术协同创新中心,陕西西安710071

出　　处：《西安电子科技大学学报》2018年第5期19-24,63,共7页Journal of Xidian University

基　　金：国家自然科学基金资助项目(61401329;61372134);国家杰出青年科学基金资助项目(61525105)

摘　　要：针对相位编码信号和失配滤波器分开优化输出的距离旁瓣电平仍然过高的问题,提出了一种恒定主瓣宽度的相位编码信号和失配滤波器联合优化方法.首先,在给定发射信号持续时间和需要的距离分辨率的条件下,给出了恒定主瓣宽度的相位编码信号和失配滤波器联合优化准则;然后,基于罚函数法和p范数理论,将带约束并且非光滑的优化问题进行转化;最后,使用最小p范数算法进行求解.仿真实验表明,在给定发射信号持续时间和需要的距离分辨率的条件下,与分开优化方法相比,该联合优化方法输出的峰值旁瓣电平分别可以降低10.72dB和4.77dB.For the high range sidclobcs of the output of separately optimiizing the phase coded wave for mi and mismatched filter,a joint optimization method for the phase coded wave for mi with the constant miainlobe width(PCW-CMW)and mismatched filter isproposed.First,given the duration timie of the transmit waveform and a needed range resolution,a criterion of jointly optimiizing the PCW-CMW and mismatched filter is proposed?Then,based on a penalty method and the theory of p-norm,we reformulate the constraint and non-smooth optimization problem as an unconstraint and smooth optimization one.Finally,we use a lcast-_pth algorithm to address it Numerical results indicate that under the given duration time of the transmit waveform and keeping a constant range resolution, the peak sidclobe level of the joint optimization method can be decreased by 10.72 dB and 4.77 dB,respectively,compared with the separate design methods of the PCW and mismatched filter.

关 键 词：波形设计 相位编码信号 恒定主瓣宽度 失配滤波器 联合优化 

分 类 号：TN953[电子电信—信号与信息处理]