PCM信号间歇收发互补设计与回波重构方法

doi:10.12305/j.issn.1001-506X.2024.03.02

系统工程与电子技术 ›› 2024, Vol. 46 ›› Issue (3): 779-785.doi: 10.12305/j.issn.1001-506X.2024.03.02

PCM信号间歇收发互补设计与回波重构方法

苏梦静, 刘晓斌, 吴其华, 艾小锋, 赵锋, 肖顺平

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

收稿日期:2022-12-06 出版日期:2024-02-29 发布日期:2024-03-08
通讯作者: 刘晓斌
作者简介:苏梦静(1999—), 女, 硕士研究生, 主要研究方向为雷达信号处理
刘晓斌(1990—), 男, 讲师, 博士, 主要研究方向为雷达信号处理
吴其华(1990—), 男, 讲师, 博士, 主要研究方向为雷达对抗试验与评估
艾小锋(1983—), 男, 副研究员, 博士, 主要研究方向为雷达目标特性分析
赵锋(1978—), 男, 副教授, 博士, 主要研究方向为雷达电子战建模与仿真
肖顺平(1964—), 男, 教授, 博士, 主要研究方向为雷达电子战仿真与评估
基金资助:
国家自然科学基金(61890542);国家自然科学基金(62001481);湖南省自然科学基金(2021JJ40686)

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

Mengjing SU, Xiaobin LIU, Qihua WU, Xiaofeng AI, Feng ZHAO, Shunping XIAO

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

Received:2022-12-06 Online:2024-02-29 Published:2024-03-08
Contact: Xiaobin LIU

摘要/Abstract

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。

关键词: 辐射式仿真, 间歇收发, 回波重构, 互补序列

Abstract:

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.

Key words: radiation simulation, interrupted transmitting and receiving, echo reconstruction, complementary

中图分类号:

TN959.1

苏梦静, 刘晓斌, 吴其华, 艾小锋, 赵锋, 肖顺平. PCM信号间歇收发互补设计与回波重构方法[J]. 系统工程与电子技术, 2024, 46(3): 779-785.

Mengjing SU, Xiaobin LIU, Qihua WU, Xiaofeng AI, Feng ZHAO, Shunping XIAO. PCM signal intermittent transmitting and receiving complementary design and echo reconstruction method[J]. Systems Engineering and Electronics, 2024, 46(3): 779-785.

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参数	数值	参数	数值
天线与目标之间的距离R/m	30	天线收发增益G/dB	30
RCS/m²	1	接收机信噪比SNR/dB	20
码元宽度τ/μs	0.1	发射功率P/W	1
码元个数M	511	间歇周期T_s/μs	0.3
载频频率f₀/MHz	2	设置组数K	3

[1]	谢艾伦, 刘晓斌, 赵锋, 艾小锋, 肖顺平. 辐射式仿真中PCM信号间歇收发回波重构方法[J]. 系统工程与电子技术, 2022, 44(3): 771-776.
[2]	刘晓斌, 赵锋, 艾小锋, 徐志明, 肖顺平. 雷达半实物仿真及其关键技术研究进展[J]. 系统工程与电子技术, 2020, 42(7): 1471-1477.
[3]	高军萍1，李琦1，戴居丰2. 二元互补序列偶集理论[J]. Journal of Systems Engineering and Electronics, 2010, 32(3): 445-449.

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

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