分布式相参雷达相参效率及相参景深研究

doi:10.12305/j.issn.1001-506X.2024.05.12

系统工程与电子技术 ›› 2024, Vol. 46 ›› Issue (5): 1573-1582.doi: 10.12305/j.issn.1001-506X.2024.05.12

• 传感器与信号处理 • 上一篇

分布式相参雷达相参效率及相参景深研究

王元昊¹, 王宏强¹^,*, 刘兴华²^,³, 曾旸¹, 杨琪¹

1. 国防科技大学电子科学学院, 湖南长沙 410073
2. 军事科学院军事科学信息研究中心, 北京 100142
3. 电子信息系统复杂电磁环境效应国家重点实验室, 河南洛阳 471003

收稿日期:2022-09-14 出版日期:2024-04-30 发布日期:2024-04-30
通讯作者: 王宏强
作者简介:王元昊(1997—), 男, 博士研究生, 主要研究方向为分布式雷达相参合成、波束形成
王宏强(1970—), 男, 研究员, 博士, 主要研究方向为雷达信号处理、太赫兹雷达技术
刘兴华(1993—), 男, 助理研究员, 博士后, 主要研究方向为分布式雷达协同探测、阵列信号处理
曾旸(1989—), 男, 副教授, 博士, 主要研究方向为雷达信号处理、目标散射特性分析
杨琪(1989—), 男, 副教授, 博士, 主要研究方向为雷达信号处理、雷达成像
基金资助:
国家自然科学基金(61871386);国家自然科学基金(62035014);国家自然科学基金(61921001)

Research on coherent synthesis efficiency and coherent depth of field of distributed coherent aperture radar

Yuanhao WANG¹, Hongqiang WANG¹^,*, Xinghua LIU²^,³, Yang ZENG¹, Qi YANG¹

1. College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China
2. Center for Information Research, Academy of Military Sciences, Beijing 100142, China
3. State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, Luoyang 471003, China

Received:2022-09-14 Online:2024-04-30 Published:2024-04-30
Contact: Hongqiang WANG

摘要/Abstract

摘要：

分布式相参雷达(distributed coherent aperture radar, DCAR)所发射信号仅能在感兴趣点处完全相参叠加，在一定发射相参效率约束下，因相参位置失配会出现能量弥散现象。对此，定义“相参景深”用以描述该能量弥散现象，并给出相参景深形成原因，指出其有界性和周期性特征，分析其影响因素，以具象化和定量化的方式揭示发射相参效率空间分布规律，可有效支撑DCAR发射信号参数和阵列构型选择等工程实践。最后，以多节点单元雷达的DCAR设计仿真实验，证明了所提方法的有效性。

关键词: 分布式相参雷达, 发射相参效率, 相参景深, 分布式发射波束形成

Abstract:

The signals transmitted by distributed coherent aperture radar (DCAR) can only be completely coherently superimposed at the point of interest. Under the constraint of transmit coherent efficiency, energy dispersion phenomenonmay occur due to mismatched coherence positions. In this regard, the definition of "coherent depth of field" is used to describe the phenomenon of energy dispersion, and the reasons for the formation of coherent depth of field are given. Its bounded and periodic characteristics are pointed out, and its influencing factors are analyzed. The spatial distribution law of transmit coherent efficiency is revealed in a concrete and quantitative way, which can effectively support engineering practices such as the selection of DCAR transmission signal parameters and array configurations. Finally, the effectiveness of the proposed method is demonstrated through simulation experiments of DCAR design using multi node unit radars.

Key words: distributed coherent aperture radar (DCAR), transmit coherent efficiency, coherent depth of field, distributed transmit beamforming

中图分类号:

TN957.3

王元昊, 王宏强, 刘兴华, 曾旸, 杨琪. 分布式相参雷达相参效率及相参景深研究[J]. 系统工程与电子技术, 2024, 46(5): 1573-1582.

Yuanhao WANG, Hongqiang WANG, Xinghua LIU, Yang ZENG, Qi YANG. Research on coherent synthesis efficiency and coherent depth of field of distributed coherent aperture radar[J]. Systems Engineering and Electronics, 2024, 46(5): 1573-1582.

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分布式相参雷达相参效率及相参景深研究

Research on coherent synthesis efficiency and coherent depth of field of distributed coherent aperture radar

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