基于相位误差估计的干涉仪测向算法  

Direction finding algorithm based on phase error estimation for multi⁃baseline phase interferometer system

作　　者：段陆洋 曹磊 李娜[2] 陈安军 都元松 DUAN Luyang;CAO Lei;LI Na;CHEN Anjun;DU Yuansong(Science and Technology on Electronic Information Control Laboratory,Chengdu 610036,China;Aviation University of Air Force,Changchun 130022,China;Unit 93107 of PLA,Shenyang 110000,China)

机构地区：[1]电子信息控制重点实验室,四川成都610036 [2]空军航空大学,吉林长春130022 [3]中国人民解放军93107部队,辽宁沈阳110000

出　　处：《现代电子技术》2023年第17期151-154,共4页Modern Electronics Technique

摘　　要：针对多基线相位干涉仪系统在工程应用中因测量误差导致的解模糊错误,进而出现测向跳区问题,提出一种基于相位误差估计的干涉仪测向算法。算法在相位差测量值的基础上估计不同通道的相位误差范围,确定不同基线解理论相位差区间,进一步反推理论入射角的区间,根据不同基线的理论入射角区间的交集解算模糊,算法充分考虑不同通道误差差异,提升了干涉仪系统的鲁棒性。仿真结果表明:在测量误差未超过系统误差估计范围时,可以达到100%解模糊正确率;在单通道失效,即测量误差超过系统误差估计范围时,测向有效率和解模糊正确率高于传统算法。In view of the solving ambiguity caused by measurement error in engineering application of multi⁃baseline phase interferometer system,and then the jump zone in the direction finding appears,an interferometer direction finding algorithm based on phase error estimation is proposed.On the basis of the phase difference measurements,the phase error scopes of different channels are evaluated,the range of theoretical phase difference for different baseline solutions is determined,then the range of theoretical incidence azimuth is deduced,the ambiguity of the multi⁃baseline interferometer is solved by the intersection of the theoretical azimuth intervals of different baselines.The algorithm fully considers the error differences of different channels.Using this algorithm,the robustness of the interferometer system is improved.It is verified by simulation that 100%correct rate of ambiguity resolution can be achieved when the measurement error is within the range of system error evaluation;when it fails in the single channel,that is,the measurement error exceeds the range of system error estimation,the direction finding efficiency and ambiguity resolution accuracy are higher than those of the traditional algorithms.

关 键 词：相位干涉仪 解模糊 测向算法 多基线 相位误差 天线阵列 通道失效 系统鲁棒性 

分 类 号：TN98-34[电子电信—信息与通信工程] TH744.3[机械工程—光学工程]