摘要
相控阵雷达系统以实现大瞬时带宽、强抗干扰能力、高精度及灵活分布为核心目标,而信号相位稳定度是评估其精度的关键指标。为确保信号在长距离传输中的相位稳定性,提出一种相位噪声消除的雷达信号长距离光纤链路稳定传输方法,通过负反馈相位补偿方法有效抑制与消除相位噪声,从而在远端节点获得高稳定信号输出。实验结果表明:在200 km单模光纤链路中,所提方法支持10~20 GHz信号带宽,并能实现360°相移;在平均1000 s的测试时间内,系统艾伦方差低至约7.65×10^(-17),均方根抖动延时小于0.39 ps。
Phased array radar systems are designed with the core objectives of achieving large instantaneous bandwidth,robust anti-jamming capabilities,high precision,and flexible distribution,among which signal phase stability serves as a key metric for evaluating their accuracy.To ensure phase stability during long-distance signal transmission,a phase-stable transmission method for radar signals over long-haul fiber links with phase noise cancellation is proposed.This method effectively suppresses and eliminates phase noise through a negative feedback phase compensation technique,thereby enabling high-stability signal output at the remote node.Experimental results demonstrate that,over a 200 km single-mode fiber link,the proposed method supports a signal bandwidth of 10~20 GHz and achieves a 360°phase shift.Within an average measurement time of 1000 seconds,the system Allan deviation is as low as approximately 7.65×10^(-17),with a root-mean-square jitter delay of less than 0.39 ps.
作者
翟文胜
辛运霞
李兴旺
翟秀丽
朱安福
李亚萍
陈黎霞
关娜
阎宽
李新
ZHAI Wensheng;XIN Yunxia;LI Xingwang;ZHAI Xiuli;ZHU Anfu;LI Yaping;CHEN Lixia;GUAN Na;YAN Kuan;LI Xin(Key Laboratory of Henan University,North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Henan University of Technology,Jiaozuo Henan 454150,China;Engineering Laboratory of Henan University,Xinxiang Vocational and Technical College,Xinxiang Henan 453003,China;State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications,Beijing 100876,China)
出处
《光通信技术》
北大核心
2025年第5期63-66,共4页
Optical Communication Technology
基金
河南省自然基金面上项目(242300420288)资助
河南省高校重点科研项目(13B510401)资助。
关键词
微波光子学
光纤链路
反馈补偿
相位噪声消除
精度
microwave photonics
optical fiber link
feedback compensation
phase noise cancellation
accuracy
