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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 wireless base station positioning technology is the hot technology in the field of wireless communication at present, which aims to obtain the position of the user’s mobile terminal device.Wireless communication base station can convert it into the distance information between the terminal and the base station time by positioning and measuring physical indicators such as propagation time, Finally, the localization algorithm is used to convert the information into the coordinate information of the terminal.An important issue to be solved by the positioning model is to solve the problems of Time Of Arrival (TOA) and Non-Line Of Sight , NLOS), the concept of NLOS reduction factor is proposed to eliminate the effect of distance error on the positioning accuracy, and the one-dimensional search convergence algorithm is adopted to reduce the error by finding the best convergence degree.Furthermore, Precision optimization, degree of connection and trajectory analysis.