基于移动网络和地图匹配的TDOA定位算法

The TDOA Location Algorithm Based on Mobile Network and Map Matching

为了满足越来越多的对位置信息的需求,提出了一种基于移动网络和地图匹配的TDOA定位。一方面,采用移动网络信息,引入基于Chan算法的TDOA定位对用户定位,不仅极大地减少了运算量和复杂度,而且有效避免了GPS数据遇到"城市峡谷"而造成的数据缺失,同时减少了终端安装GPS设备产生的费用。另一方面,利用地图匹配对移动网络的定位进行修正,增加了定位精确度。仿真结果验证了算法的可行性和有效性,表明了该算法具有较高的定位精度。

In order to meet the increasing demand for location information, it proposed a TDOA location based on mobile network and map matching. On the one hand, the use of mobile network information, the introduction of Chart algorithm based on TD-A lo- cation positioning for users, not only greatly reduces the calculating amount and complexity, but also effectively avoid the loss of GPS data caused by urban canyon, at the same time reduce the cost of the terminal to install GPS devices. On the other hand, the use of map matching to modify the positioning of the mobile network, increase the positioning accuracy. The simulation results verify the feasibility and effectiveness of the proposed algorithm, shows that the algorithm has a higher positioning accuracy