面向发射波束形成的分布式相参雷达无线频率同步方法研究

王楠; 王华林; 高晶; 杨长山

doi:10.12263/DZXB.20241025

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面向发射波束形成的分布式相参雷达无线频率同步方法研究

学术论文 | 更新时间：2025-07-24

- 面向发射波束形成的分布式相参雷达无线频率同步方法研究
- Wireless Frequency Synchronization Method for Transmit Beamforming of Distributed Coherent Aperture Radar
- 电子学报 2025年53卷第4期页码：1241-1250
- 作者机构：
  
  1.西安电子科技大学电子工程学院，陕西西安 710071
  2.西安中电科西电科大雷达技术协同创新研究院有限公司，陕西西安 710071
  3.西安电子科技大学杭州研究院，浙江杭州 311231
- 作者简介：
  
  [ "王楠男，1994年2月出生，陕西咸阳人.西安电子科技大学电子工程学院博士研究生、西安中电科西电科大雷达技术协同创新研究院有限公司工程师.主要研究方向为分布式相参雷达、分布式信号处理等.中国电子学会会员编号：E190027116M. E-mail: wang_nan@xidian.edu.cn" ]
  [ "王华林男，1981年12月出生，山东威海人.西安电子科技大学知识产权战略与运营中心副研究员、西安中电科西电科大雷达技术协同创新研究院有限公司总经理.主要研究方向为分布式雷达系统、分布式数据融合. E-mail: wanghualin@mail.xidian.edu.cn" ]
  [ "高晶男，1982年7月出生，山西运城人.西安中电科西电科大雷达技术协同创新研究院有限公司工程师.主要研究方向为雷达数据处理、分布式数据融合. E-mail: 48407193@qq.com" ]
  [ "杨长山男，1992年7月出生，河北邯郸人.西安中电科西电科大雷达技术协同创新研究院有限公司技术转移部中级技术经理人.主要研究方向为雷达系统工程、分布式数据融合. E-mail: 1206129302@qq.com" ]
- 基金信息：
  
  西安电子科技大学杭州研究院概念验证基金(20107230015)
- DOI：10.12263/DZXB.20241025
  中图分类号： TN952;
- 收稿：2024-11-12，
  
  修回：2025-03-04，
  
  纸质出版：2025-04-25
- 稿件说明：
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王楠, 王华林, 高晶, 等. 面向发射波束形成的分布式相参雷达无线频率同步方法研究[J]. 电子学报, 2025, 53(04): 1241-1250.

WANG Nan, WANG Hua-lin, GAO Jing, et al. Wireless Frequency Synchronization Method for Transmit Beamforming of Distributed Coherent Aperture Radar[J]. Acta Electronica Sinica, 2025, 53(04): 1241-1250.
王楠, 王华林, 高晶, 等. 面向发射波束形成的分布式相参雷达无线频率同步方法研究[J]. 电子学报, 2025, 53(04): 1241-1250. DOI：10.12263/DZXB.20241025

WANG Nan, WANG Hua-lin, GAO Jing, et al. Wireless Frequency Synchronization Method for Transmit Beamforming of Distributed Coherent Aperture Radar[J]. Acta Electronica Sinica, 2025, 53(04): 1241-1250. DOI：10.12263/DZXB.20241025

摘要

在分布式相参雷达（Distributed Coherent Aperture Radar，DCAR）中，节点间需要频率同步，才能调整雷达各节点发射信号的时间和信号相位，完成分布式发射波束形成.但现有有线同步方法无法在可移动平台或复杂地形等场景下实现频率同步.为此，本文提出了一种分布式相参雷达的无线频率同步方法，用于发射波束的形成.首先，推导频率同步偏差与发射波束增益的量化关系；其次，将雷达节点分为一个主节点和多个从节点，提出一种二维相干测频算法，估计从节点相对于主节点的频率偏差，并对频率偏差进行了补偿，实现频率同步；再次，推导了所提方法的频率同步及波束形成性能界限；最后，通过仿真验证所提方法的性能与理论性能界限一致，通过合理选取同步信号参数，让频率同步结果满足分布式相参雷达发射波束形成需求.

Abstract

In Distributed Coherent Aperture Radar (DCAR)

inter-node frequency synchronization is required to adjust the time and phase of the emitted signals from various radar nodes

thereby completing the distributed transmission beamforming. However

existing wired synchronization methods cannot achieve frequency synchronization in scenarios such as mobile platforms or complex terrains. Therefore

this paper proposes a wireless frequency synchronization method for DCAR

aimed at transmission beamforming. Firstly

the paper derives the quantitative relationship between frequency synchronization deviation and transmission beam gain. Secondly

the DCAR nodes are divided into a master node and multiple slave nodes

and a two-dimensional coherent frequency measurement algorithm is proposed to estimate the frequency deviation of the slave nodes relative to the master node

and compensate for the frequency deviation

thus achieving frequency synchronization. Thirdly

the performance limits of frequency synchronization and beamforming using the proposed method are derived. Finally

the simulation confirmed that the performance of the proposed method is consistent with the theoretical performance limits

and by reasonably selecting the synchronization signal parameters

the frequency synchronization results can meet the requirements for the transmission beamforming of distributed coherent aperture radar.

关键词

Keywords

references

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