超长单基线干涉仪测向方法及对定位性能的提升  

Direction Finding Method of Ultra Long Single-baseline Interferometer and Improvement of Positioning Performance

作　　者：韩剑[1] 黄中华 HAN Jian;HUANG Zhonghua(Southwest China Research Institute of Electronic Equipment,Chengdu 610036,China;Unit 93129 of the PLA,Beijing 100000,China)

机构地区：[1]中国电子科技集团公司第二十九研究所,成都610036 [2]中国人民解放军93129部队,北京100000

出　　处：《电子信息对抗技术》2023年第5期53-58,共6页Electronic Information Warfare Technology

摘　　要：提出利用超长单基线来放大天线阵略微转动引起的干涉仪相位变化以获得可观测性,并通过相位周期的计数,单基线实现了高精度、无模糊测向。克服了传统高精度干涉仪需要多条基线才能解模糊的问题,减小了设备量。推导了超长单基线干涉仪测向公式,分析了测向误差,指出采用该方法后对系统测向和定位性能的提升。通过仿真验证了该方法的测向精度和定位精度,分析结果表明该方法可获得高测向精度和定位精度,同时可提高定位速度。The ultra long single-baseline is proposed to amplify the interferometer phase change caused by slight rotation of the antenna array to obtain observability.By counting the phase period,high-precision and ambiguity-free direction finding is realized by the single-baseline.The method overcomes the problem that traditional high-precision interferometer requires multiple-baselines to solve ambiguity,and reduces the amount of equipment.The direction finding formula of ultra long single-baseline interferometer is derived,and the direction finding error is analyzed.The improvement of direction finding and positioning performance after using this method is also pointed out.Finally,the direction finding accuracy and positioning accuracy of the method are verified by simulation.The simulation results show that the method can achieve high direction finding accuracy and positioning accuracy,and improve the positioning speed.

关 键 词：相位干涉仪 单基线 测向 定位 

分 类 号：TN971.3[电子电信—信号与信息处理]