基于多传感器的水声定位精度研究  

Research on Acoustic Locating Accuracy Algorithm Based on Multi-sensor

作　　者：王怡[1] 付丽琴[1] 

机构地区：[1]中北大学电子测试技术国家重点实验室,山西太原030051

出　　处：《计算机测量与控制》2009年第2期363-364,367,共3页Computer Measurement &Control

摘　　要：针对TDOA定位算法中几何不确定性对定位精度的负面影响,提出一种基于多传感器信息融合的水声定位算法;该算法首先对多传感器合理布阵,确定若该个TDOA定位子系统,再对每个定位子系统用TDOA算法求得目标位置信息,最后依据几何精度因子(GDOP)对得到的若干个目标位置信息进行加权融合,得到最终定位结果;利用软件仿真对算法可行性进行了验证,结果表明,与基本的五元阵定位系统相比,该算法有效消除了因几何不确定性引起的误差,大大提高了定位精度。The geometric uncertainty in TDOA location algorithm leads to negative impact on positioning accuracy. This paper presents a multi--sensor acoustic positioning algorithm that eliminates effectively of geometric uncertainty caused by the error. The method increases the number of sensors and creates TDOA location sub--system by arranging multi--sensor reasonably. Then, combines positioning information of each TDOA location sub-- system to achieve final results. Finally, weighted fusion based on the geometric dilution of precision （GDOP） is implemented and the ultimate positioning result is got. Simulations are accomplished to prove the feasibility of the algorithm. The experimental results show that the algorithm can greatly reduce the positioning error compared with the basic element of five compared array positioning system

关 键 词：时差定位 多传感器 融合 几何精度因子 

分 类 号：TN958[电子电信—信号与信息处理]