Wireless Frequency Synchronization Method for Transmit Beamforming of Distributed Coherent Aperture Radar

WANG Nan; WANG Hua-lin; GAO Jing; YANG Chang-shan

doi:10.12263/DZXB.20241025

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Wireless Frequency Synchronization Method for Transmit Beamforming of Distributed Coherent Aperture Radar

PAPERS | 更新时间：2025-07-24

- Wireless Frequency Synchronization Method for Transmit Beamforming of Distributed Coherent Aperture Radar
- ACTA ELECTRONICA SINICA Vol. 53, Issue 4, Pages: 1241-1250(2025)
- 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：
- 基金信息：
  
  Proof of Concept Foundation of Hangzhou Institute of Research of Xidian University(20107230015)
- DOI：10.12263/DZXB.20241025
  CLC： TN952;
- Received：12 November 2024，
  
  Revised：2025-03-04，
  
  Published：25 April 2025
- 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

刘泉华 , 张凯翔 , 梁振楠 , 等 . 地基分布式相参雷达技术研究综述 [J ] . 信号处理 , 2022 , 38 ( 12 ): 2443 - 2459 .

LIU Q H , ZHANG K X , LIANG Z N , et al . Research overview of ground-based distributed coherent aperture radar [J ] . Journal of Signal Processing , 2022 , 38 ( 12 ): 2443 - 2459 . (in Chinese)

刘兴华 , 王国玉 , 徐振海 , 等 . 分布式孔径相参合成原理、发展与技术实现综述 [J ] . 雷达学报 , 2023 , 12 ( 6 ): 1229 - 1248 .

LIU X H , WANG G Y , XU Z H , et al . Review of principles, development and technical implementation of coherently combining distributed apertures [J ] . Journal of Radars , 2023 , 12 ( 6 ): 1229 - 1248 . (in Chinese)

XIAO X D , LI S Y , PENG S W , et al . Microwave photonic wideband distributed coherent aperture radar with high robustness to time synchronization error [J ] . Journal of Lightwave Technology , 2021 , 39 ( 2 ): 347 - 356 .

TIAN W M , LIU H B , ZENG T . Frequency and time synchronization error analysis based on generalized signal model for Bistatic SAR [C ] // 2009 IET International Radar Conference . London : IET , 2009 : 1 - 4 .

曾涛 , 殷丕磊 , 杨小鹏 , 等 . 分布式全相参雷达系统时间与相位同步方案研究 [J ] . 雷达学报 , 2013 , 2 ( 1 ): 105 - 110 .

ZENG T , YIN P L , YANG X P , et al . Time and phase synchronization for distributed aperture coherent radar [J ] . Journal of Radars , 2013 , 2 ( 1 ): 105 - 110 . (in Chinese)

RODRIGUES-SILVA E , RODRIGUEZ-CASSOLA M . Analysis of a POD-based approach for phase and time synchronization of bistatic and multistatic SAR systems [C ] // 13th European Conference on Synthetic Aperture Radar . Online : VDE , 2021 : 1 - 6 .

KRIEGER G , YOUNIS M . Impact of oscillator noise in bistatic and multistatic SAR [J ] . IEEE Geoscience and Remote Sensing Letters , 2006 , 3 ( 3 ): 424 - 428 .

LORIA E , PRAGER S , SEKER I , et al . Modeling the effects of oscillator phase noise and synchronization on multistatic SAR tomography [J ] . IEEE Transactions on Geoscience and Remote Sensing , 2023 , 61 : 5204212 .

来驰攀 , 刘爱芳 , 穆冬 . 一种编队卫星InSAR系统相位同步方法研究 [C ] // 第七届高分辨率对地观测学术年会论文集 . 长沙 : 高分辨率对地观测学术联盟 , 2020 : 232 - 236 .

LAI C P , LIU A F , MU D . Study and simulation on phase synchronization method of a format flying satellites inSAR system [C ] // 7th Annual Conference on High Resolution Earth Observation . Changsha : China High Resolution Earth Observation Academic Alliance , 2020 : 232 - 236 . (in Chinese)

DONG Y , LIU Z , WANG X C , et al . Distribution of millimeter waves over a fiber link with high frequency stability [J ] . Chinese Optics Letters , 2016 , 14 ( 12 ): 120006 - 120009 .

王小成 . 时间和频率信号的光纤稳定传输技术研究 [D ] . 上海 : 上海交通大学 , 2019 .

WANG X C . Research on Optical Fiber Stable Transmission Technology of Time and Frequency Signals [D ] . Shanghai : Shanghai Jiao Tong University , 2019 . (in Chinese)

殷丕磊 . 地基宽带分布式全相参雷达技术研究 [D ] . 北京 : 北京理工大学 , 2016 .

YIN P L . Research on Ground-based Broadband Distributed All-coherent Radar Technology [D ] . Beijing : Beijing Institute of Technology , 2016 . (in Chinese)

ZHANG W T , MIAO C , WU W . An optimization algorithm-based coherence method for the DCAR tracking process [J ] . IEEE Transactions on Aerospace and Electronic Systems , 2024 , 60 ( 2 ): 1970 - 1984 .

MERLO J M , SCHLEGEL A , NANZER J A . High accuracy wireless time-frequency transfer for distributed phased array beamforming [C ] // 2023 IEEE/MTT-S International Microwave Symposium-IMS 2023 . Piscataway : IEEE , 2023 : 109 - 112 .

RASHID M , NANZER J A . Online expectation-maximization based frequency and phase consensus in distributed phased arrays [J ] . IEEE Transactions on Communications , 2023 , 71 ( 6 ): 3721 - 3735 .

KENNEY R H , METCALF J G , MCDANIEL J W . Wireless distributed frequency and phase synchronization for mobile platforms in cooperative digital radar networks [J ] . IEEE Transactions on Radar Systems , 2024 , 2 : 268 - 287 .

MUDUMBAI R , BROWN III D R , MADHOW U , et al . Distributed transmit beamforming: Challenges and recent progress [J ] . IEEE Communications Magazine , 2009 , 47 ( 2 ): 102 - 110 .

WENTZ M , CHOWDHURY K R . Intra-network synchronization and retrodirective distributed transmit beamforming with UAVs [J ] . IEEE Transactions on Vehicular Technology , 2024 , 73 ( 2 ): 2017 - 2031 .

苗菁 . 自由空间时间频率同步 [D ] . 北京 : 清华大学 , 2015 .

MIAO J . Free Space Time Frequency Synchronization [D ] . Beijing : Tsinghua University , 2015 . (in Chinese)

PRAGER S , HAYNES M S , MOGHADDAM M . Wireless subnanosecond RF synchronization for distributed ultrawideband software-defined radar networks [J ] . IEEE Transactions on Microwave Theory and Techniques , 2020 , 68 ( 11 ): 4787 - 4804 .

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