一种借助单基中点测向所实现的双机时差定位方法  

Time Difference Location Method Using Two Planes Realized by Single-Base Midpoint DF

作　　者：郁涛[1] 

机构地区：[1]中国电子科技集团公司第五十一研究所,上海201802

出　　处：《现代导航》2017年第1期28-32,共5页Modern Navigation

摘　　要：设双机同向同速沿直线飞行,利用单基中点测向法,通过两次测量目标的时差,即可在两个不同位置处得到目标的方位角,在此基础上,基于三角定位原理即可获得目标距离的线性解析解。与平面三机时差或双机测向交叉定位法相比,借助单基中点测向法所得到双机时差定位法具有更好的定位精度。Assume that the two planes flying along a straight line with the same direction and speed, the two azimuth of the target can be obtained by measuring time difference in two different locations according to single-base midpoint DF method. On this basis, the linear solution of target distance can be solved out based on the principle of triangulation location. Compared with the time difference location method using three planes or the DF location method using two planes, the two plane location method based on time difference measuring obtained by single-base midpoint DF method has the better positioning accuracy.

关 键 词：时差定位 双机定位 测向 测距 机载无源定位 

分 类 号：TN953[电子电信—信号与信息处理]