摘要
为提高商用移动通信系统中通信终端的定位精度,提出了一种基于可移动锚点的定位跟踪算法(MAPT)。MAPT通过牛顿高斯迭代算法更新锚点的位置,使锚点逐步靠近被定位的目标终端,提高目标节点位置坐标的估计精度。MAPT还可有效突破传统三角定位法中,难以跟踪三角区域以外的目标终端的问题。仿真实验表明,MAPT算法能够实时对三维空间中的通信终端进行定位及跟踪,定位精度可以达到25 m以内。
To improve the positioning accuracy of communication terminals in commercial mobile communication systems, a mobile anchor node based positioning and tracking （MAPT） algorithm is proposed in this paper. MAPT updates the position coordinates of the anchor nodes by the Newton Gaussian iteration algorithm to make the anchor nodes gradually approach the target terminal with the enhanced estimation accuracy of the target node position coordinates. Moreover, MAPT can effectively address the problem of positioning the target terminal outside the triangular area, which is intractable due to the use the traditional triangulation method. Simulation results demonstrate that MAPT algorithm can effectively locate and track wireless terminals in 3D space with the accuracy of 25 meters or less.
出处
《移动通信》
2017年第13期55-60,共6页
Mobile Communications
关键词
移动定位
终端定位
定位跟踪
到达时间
到达时间差
mobile positioning terminal positioning tracking and positioning time of arrival （TOA） time difference of arrival （TDOA）
