多形态分区的子系统融合多站时差定位

Multi-site TDOA Location Based on Multi-form Subsystems Fusion

以多种4站定位的站点形态特征划分区域,按照定位精度互补原则跨区域组合站点构成子系统,再对子系统的定位解进行数据融合处理。文中还通过一种新的时刻标定方法,以牺牲测量时间误差换取定位解的误差规律,并结合解的几何精度稀释(GDOP)值进行精度修正。仿真实验表明以上方法对多站时差定位的运算效率和定位精度都有明显提高。

In accordance with the form characteristics of sites for Four-site Time Domain of Arrival （TDOA） location, the subsystems are configured using the principle of complementary location accuracy and then utilize the location results from subsystems are fused for intergrated processing. A new method of time calibration to get less location error at the expense of time measurement error is adopted, so as to correct the result with value of GDOP. Simulation shows that both the efficiency and the aeeurary of location are improved significantly with the above methods.