一种具有检错和容错能力的测向算法  

A Direction Finding Method With Ability of Detecting Error and Fault Tolerance

作　　者：王玉林[1] 陈建峰[1] 孙哲 刘刚 WANG Yulin;CHEN Jianfeng;SUN Zhe;LIU Gang(The 54th Research Institute of CETC,Shijiazhuang 050081,China;Naval Military Representative Office in Handan,Handan 056000,Hebei,China;Unit 63780 of PLA,Huayin 714200,Shaanxi,China)

机构地区：[1]中国电子科技集团公司第54研究所,石家庄050081 [2]海军驻邯郸地区军事代表室,河北邯郸056000 [3]解放军63780部队,陕西华阴714200

出　　处：《电子信息对抗技术》2020年第6期1-5,共5页Electronic Information Warfare Technology

基　　金：国家部委基金资助项目。

摘　　要：为了提高现有相关干涉仪测向算法的容错能力,提出一种具有检错和容错能力的测向算法。从固定基准法、最短基线法及最长基线法三种测向算法中选择测向精度和测向解模糊能力兼有的固定基准法开展研究,结合固定基准法测向误差随基准天线变化的特征,提出遍历所有基准天线得到多个测向结果并聚类处理的新算法。通过仿真证明,该算法除测向精度优于单基准测向算法外,还具有一定的检错和容错能力,能够识别单天线故障且测向精度仅有微小恶化。该算法通过增加运算量提高测向性能,硬件可实现,适合应用在测向天线容易发生故障的场合。Considering the weak fault tolerance of the conventional interferometer direction finding algorithm in engineering,a direction finding algorithm with error detection and error correction capability is proposed.Firstly,the effects of three baseline combinations of fixed reference method,shortest baseline method and longest baseline method on direction finding error are compared and analyzed.The fixed reference method with medium performance but more practicality is selected to optimize.Secondly,the variation law of the direction finding error of different reference antennas is compared with the azimuth angle.It is found that the fluctuation of the error is related to the specific base antenna.By clustering the five fixed reference direction finding results,the error unit selecting and error minimization are realized.Finally,the proposed new algorithm has the advantages of error detection,error correction and high direction finding accuracy.The performance of this algorithm is verified in engineering.

关 键 词：干涉仪测向 基线组合 容错 检错 聚类 

分 类 号：TN971.3[电子电信—信号与信息处理]