一种基于WGS84地球模型的地基超视距时差定位算法

An Algorithm of Over-the-Horizon Time Difference of Arrival Location Based on WGS84 Earth Model

基于WGS84地球椭球模型,研究并提出一种对流层散射效应下的超视距时差定位算法,并推导出相关计算公式,最后通过计算机仿真试验在不同目标距离场景下对所提算法进行验证。结论表明定位算法的系统性误差很小,能够实现对地基目标的高精确定位。

Focusing on the WGS84 earth model and troposcatter, an algorithm of over-the-horizon time difference of arrival location is put forward. The detailed formulas are derived as well. Simulations are carried out to demonstrate the performance of proposed scheme under varied target distance. The conclusions are drawn that the algorithm is able to achieve a high accuracy with a low location error.