针对低轨卫星移动通信终端的无源定位技术  

Passive locating technology for LEO satellite mobile communication terminal

作　　者：朱国富 ZHU Guofu(Southwest China Institute of Electronic Technology,Chengdu 610036,China)

机构地区：[1]中国西南电子技术研究所,四川成都610036

出　　处：《电子设计工程》2022年第7期185-188,193,共5页Electronic Design Engineering

摘　　要：针对低轨卫星移动通信地面终端的无源定位问题,结合低轨卫星移动通信系统的特点,提出了基于地面通信终端“多普勒频移预补偿机制”的无源定位技术,通过多普勒频移的目标位置分布曲线结合测向方位进行位置解算,从而可直接单站实现对地面终端的快速无源定位。仿真实验结果表明,定位系统复杂度低,解算速度快,定位误差在合理范围内,对于地面终端的监控具有重要意义。For passive locating problem of the LEO satellite mobile communication ground terminal,the passive locating technology based on the“Doppler shift pre-compensation mechanism”of the ground communication terminal is proposed with the characteristics of LEO satellite mobile communication system.Through the target position distribution curve of Doppler frequency shift and the direction finding azimuth,the fast passive locating of the ground terminal can be realized directly by one single station.The simulation results show that the positioning system has low complexity,fast calculation speed and reasonable positioning error,which is of great significance for the monitoring of ground terminal.

关 键 词：低轨卫星 地面通信终端 多普勒频移预补偿 无源定位技术 

分 类 号：TN97[电子电信—信号与信息处理]