基于多普勒变化率的星载无源跟踪方法  

A Method of Passive Tracking on Satellite Platform Based on Doppler Rate-of-Change

作　　者：成志强 刘永旭 李建军 CHENG Zhi-qiang;LIU Yong-xu;LI Jian-jun(Science and Technology on Electronic Information Control Laboratory,Chengdu 610036,China)

机构地区：[1]电子信息控制重点实验室

出　　处：《电子信息对抗技术》2019年第4期6-10,共5页Electronic Information Warfare Technology

摘　　要：针对星载平台对高速运动目标的无源跟踪定位,提出一种利用多普勒变化率信息对目标运动状态进行估计的方法。在分析多普勒变化率与目标运动参数关系的基础上,介绍了基于测向的解模糊方法,以及基于无迹卡尔曼滤波的数据处理方法。通过仿真研究了不同位置、不同运动状态目标多普勒变化率的特征,并对一种匀速直线运动的目标进行了状态跟踪仿真。仿真结果表明基于本方法可以实现对运动目标三维位置、速度和速度方向的估计。For passive tracking and localizing the high-speed-moving target on a satellite platform,a method of estimating target motion state using the Doppler rate-of-change is presented.After analyzing the relations between the Doppler rate-of-change and the target's moving parameters,a method of solving ambiguity based on direction-finding,and a method of data processing based on unscented Kalman filter are introduced.By simulation,the Doppler rate-ofchange property of the target on different altitudes and with different velocity is studied,and an instance of tracking a CV linear motion state is simulated.The result shows that the estimation of the 3-D location,the velocity and the direction of motion can be realized using passive tracking based on the method.

关 键 词：卫星 多普勒变化率 目标跟踪 

分 类 号：TN971.1[电子电信—信号与信息处理]