一种陆基分布式全相参雷达时间同步方案研究  

A Time Synchronization Scheme for Ground-based Distributed Coherent Aperture Radar

作　　者：张雨博 高剑[1] 王仁涛[1] ZHANG Yubo;GAO Jian;WANG Rentao(Xi'an Electronic Engineering Research Institute,China,Xi'an 710100)

机构地区：[1]西安电子工程研究所,西安710100

出　　处：《火控雷达技术》2025年第1期94-98,共5页Fire Control Radar Technology

摘　　要：陆基分布式全相参雷达(Ground-based Distributed Coherent Aperture Radar,GB-DCAR)相较于传统单站雷达具有部署灵活、威力大、范围广等优势。然而实际应用中,信号全相参合成要求实现系统精确同步。该文首先分析了时间同步误差对系统相参合成效率的影响,接着提出一种基于全球定位系统-秒脉冲(Global Positioning System-1 Pulse Per Second,GPS-1PPS)和双向时间对比法的系统时间同步方案,最后建立了仿真模型验证方案可行性并分析同步信号脉冲带宽对时间同步效果的影响。Compared with traditional single-station ralar,ground-based distributed coherent aperture radar(GB-DCAR)has the advantages of flexible deployment,high power and wide monitoring range.However,in practical applications,the fully coherent synthesis of signals requires precise synchronization of the system.This paper first analyzes the impact of time synchronization error on the efficiency of system coherent synthesis,and then proposes a system time synchronization scheme based on Global Positioning System-l Pulse Per Second(GPS-1PPS)and two-way time comparison method.Finally,a simulation model is established to verify the feasibility of the scheme and analyze the impact of the synchronization signal pulse bandwidth on the time synchronization effect.

关 键 词：系统时间同步 GPS-1PPS 双向时间对比法 

分 类 号：TN95[电子电信—信号与信息处理]