PCM信号间歇收发互补设计与回波重构方法  

PCM signal intermittent transmitting and receiving complementary design and echo reconstruction method

作　　者：苏梦静 刘晓斌 吴其华[1] 艾小锋[1] 赵锋[1] 肖顺平[1] SU Mengjing;LIU Xiaobin;WU Qihua;AI Xiaofeng;ZHAO Feng;XIAO Shunping(State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System,College of Electronic Science,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学电子科学学院电子信息系统复杂电磁环境效应国家重点实验室,湖南长沙410073

出　　处：《系统工程与电子技术》2024年第3期779-785,共7页Systems Engineering and Electronics

基　　金：国家自然科学基金(61890542,62001481);湖南省自然科学基金(2021JJ40686)资助课题。

摘　　要：间歇收发用于辐射式仿真中可以有效解决收发信号互耦的问题,但间歇收发会带来信号损失,导致相位编码信号距离像出现高旁瓣。为了解决这一问题,提出间歇收发互补序列设计方法,给出了收发序列参数设计方法,并对相位编码间歇收发回波进行重组拼接,消除间歇收发导致的回波缺失,获得了精确的目标距离像。仿真结果表明,收发互补设计及回波重组拼接能够准确重构回波,并且重构后互相关系数接近1,验证了所提方法的可行性与正确性。Interrupted transmitting and receiving in radiation simulation can effectively solve the problem of mutual coupling between signals,but it will also bring about signal loss,which will result in high sidelobes in range profile of the phase code modulation signal.To solve this problem,an intermittent transceiver complementary sequence design method is proposed and the design of complementary sequences is also given,and recombines the phase code modulation intermittent transceiver echo to eliminate the echo loss caused by intermittent transceiver and obtain accurate target range profile.Simulation results show that the design of complementary sequences and echo reconstruction splicing can accurately reconstruct the echo,and the reconstructed cross-correlation coefficient is close to 1,which verifies the feasibility and correctness of the proposed method.

关 键 词：辐射式仿真 间歇收发 回波重构 互补序列 

分 类 号：TN959.1[电子电信—信号与信息处理]