摘要
针对基于双星或多星的卫星通信终端定位系统使用约束多、定位误差大等问题,提出一种单星无源高精度定位方法。利用一个高增益窄波束天线接收辐射源旁瓣泄露信号,同时接收主瓣经卫星转发的信号,通过互模糊函数实现微弱旁瓣信号检测和时差参数估计,结合旁瓣接收天线波束指向信息,实现对目标的准确定位。仿真结果表明,可实现对微弱旁瓣信号的检测和运动目标的高精度定位。
High application restrictions and large location errors exist in double or muhi-satellite loeation.A method of passive location based on single satellite is presented.In this method,a high-Gain and narrow beam antenna can receive the side lobe signal the transponded signal at the same time.An ambiguity function approach is used to detect weak side lobe signal and measure time difference of arrival （TDOA）.The target is located exactly by the antenna beam pointing. Simulation results show that this method can provide weak side lobe signal detection and high precision location for moving target.
作者
闫涛
柏如龙
YAN Tao BAI Ru-long(The 54th Research Institute Of CETC ,Shijiazhuang Hebei 050081 ,China Equipment Engineening Technolygy Research Laboratory, Shijiazhuang Hebei 050081, China)
出处
《无线电通信技术》
2017年第1期85-88,共4页
Radio Communications Technology
关键词
单星定位
模糊函数
弱旁瓣信号检测
到达时差
方向
single satellite location
ambiguity function
weak side lobe signal detection
TDOA
direction finding
