微波光子联合时差/相差的高精确度测向技术  

High precision direction finding technique of microwave photonics combined time difference and phase difference

作　　者：唐龙 朱扬辉 王斌 颜健 TANG Long;ZHU Yanghui;WANG Bin;YAN Jian(Guilin Changhai Development Co.,Ltd.,Guilin Guangxi 541001,China)

机构地区：[1]桂林长海发展有限责任公司,广西桂林541001

出　　处：《太赫兹科学与电子信息学报》2024年第7期716-722,共7页Journal of Terahertz Science and Electronic Information Technology

基　　金：广西创新驱动发展专项资助项目(桂科AA21077008)。

摘　　要：针对短基线时差测向精确度低、长基线相差测向存在模糊和传统的微波技术难以满足电子战设备分布式部署的长距离传输需求的问题,结合微波光子学,提出一种基于微波光子联合时差相差的分布式长距离单基线高精确度测向技术。该技术使用直调模式微波光子传输设备,克服了微波信号经过长距离传输后引起的时差和相差变化影响,满足长距离微波光子的稳定传输;并在此基础上采用改进的时差曲面拟合插值方法解决相差模糊问题。仿真和实验测试验证了该技术实现分布式长距离单基线高精确度测向的可行性。Addressing the issues of low precision in short baseline time-difference direction finding,ambiguity in long baseline phase-difference direction finding,and the difficulty of traditional microwave technologies to meet the long-distance transmission requirements for distributed deployment of electronic warfare equipment,a distributed long-distance single-baseline high-precision direction finding technology based on microwave photonics combining time-difference and phase-difference is proposed.This technology employs direct modulation mode microwave photonic transmission equipment,overcoming the impact of time-difference and phase-difference variations caused by long-distance transmission of microwave signals,ensuring stable transmission of microwave photonics over long distances.Furthermore,an improved time-difference surface fitting interpolation method is adopted to resolve the phase-difference ambiguity issue.Simulations and experimental tests have verified the feasibility of this technology for implementing high-precision distributed long-distance single-baseline direction finding.

关 键 词：微波光子 时差测向 相差测向 实时校正 

分 类 号：TN971[电子电信—信号与信息处理]