基于干涉仪辅助测量的空中运动目标高度跟踪方法  

Height Tracking Method of Aerial Moving Target Based on Interferometer Aided Measurement

作　　者：张东 余昊 谢振杰 王欣 孟涛 ZHANG Dong;YU Hao;XIE Zhenjie;WANG Xin;MENG Tao(Southwest China Research Institute of Electronic Equipment,Chengdu 610036,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

出　　处：《电子信息对抗技术》2023年第4期39-44,共6页Electronic Information Warfare Technology

摘　　要：对空中机动目标的三维无源定位,现多采用四站时差定位方法。由于受地形遮挡等条件限制,四站时差定位系统有时无法同时侦收到同一目标信号而退化为三站时差,无法实现高度测量。且由于四个侦察站的高程差限制,即使四站同时侦收到目标信号时也存在高度测量误差较大的问题。针对该问题,设计了一种基于时差定位和多通道相位干涉仪测向相结合的三维无源定位方法。该方法在三站情形下也可实现三维定位,在四站情形下通过统计信息网格(Statistical Information Grid,STING)聚类融合四站时差定位高度和干涉仪辅助测量高度,显著减小高度测量误差。Four-station time difference of arrival(TDOA)algorithm is widely used for 3D passive location of airborne targets.Due to the limitation of terrain occlusion and other conditions,the four-station TDOA positioning system sometimes fails to detect the same target signal at the same time and degenerates into the three station TDOA,unable to achieve altitude measurement.Due to the limitation of the elevation difference of the four reconnaissance stations,even if the four stations detect the target signal at the same time,there is a problem of large height measurement error.An algorithm based on the combination of TDOA and interferometer direction finding is proposed.3D positioning in the case of three stations is realized.In four-station scenario,the height measurement error is significantly reduced by fusing the height measured by TDOA and the interferometer based on statistical information grid(STING)cluster.

关 键 词：空中目标 三维定位 相位干涉仪 STING聚类 

分 类 号：TN953.7[电子电信—信号与信息处理]