基于无线通信基站的室内三维定位问题  

3D Positioning Problem Based on Wireless Communication Base Station

作　　者：曹剑锋[1] 叶晨辉 杨蕊鸿 

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804 [2]中电投融和融资租赁有限公司,上海200092 [3]同济大学软件学院,上海201804

出　　处：《数学的实践与认识》2017年第14期211-220,共10页Mathematics in Practice and Theory

摘　　要：无线基站定位技术是目前无线通信领域中的热点技术,它以获取用户移动终端设备的位置为目标.无线通信基站通过定位测量传播时间等物理指标能够将其转化为终端与基站时间的距离信息,最终利用定位算法将这些信息转化为终端的坐标信息.定位模型要解决的一个重要问题是解决终端到基站的信号传播时间(Time Of Arrival,TOA)和非视距传播路径(Non-Line Of Sight,NLOS)造成的误差分析,提出了NLOS折减影响因子的概念来消除距离误差对定位精度的影响,采用一维搜索收敛算法,通过寻找最好的收敛程度来减少误差.通过算法能够进一步探讨精度优化、连接度数及运动轨迹分析的问题.The technology of wireless base station location is a hot spot in the field of wireless communication, which aims at obtaining the location of the user＇s mobile terminal equipment. The wireless communication base station transform the physical indices such as time of arrival to distance between the terminal and base station which can be used to calculate the coordinate information of the terminal. The key point of positioning model is to solve the error coursed by Time of Arrival （TOA） and Non-Line of Sight （NLOS）. In this paper, the NLOS reduction influence factor is proposed to eliminate the influence of range error on positioning accuracy, and linear search algorithm is adopted to reduce the error by locating the best convergence degree. Through this algorithm, the problem of accuracy optimization connection degree and moving path analysis is discussed.

关 键 词：最小二乘法 一维优化搜索 曲线拟合 NLOS折减影响因子 

分 类 号：TN929.5[电子电信—通信与信息系统]