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一种NLOS环境下TOA定位算法和算法比较
引用本文:方鹏,胡宗福.一种NLOS环境下TOA定位算法和算法比较[J].数字社区&智能家居,2007(15).
作者姓名:方鹏  胡宗福
作者单位:同济大学,通信与信息系统,上海,200092 同济大学,通信与信息系统,上海,200092
摘    要:本文提出了当基站在空间随意分布时考虑非视线(NLOS)传播影响的TOA算法.其主要思想把权值最大的基站即存在NLOS误差的基站的非视距误差当作未知量,把非线性问题转化为最大似然(ML)线性估计.此算法结构简单,计算结果有较高的精度.并把该算法与其他算法做了详细的比较.

关 键 词:非视距传播  信号到达时间  最大似然估计

A TOA-based Location Algorithm in NLOS Environment and the Comparison of Algorithms
FANG Peng,HU Zong-fu.A TOA-based Location Algorithm in NLOS Environment and the Comparison of Algorithms[J].Digital Community & Smart Home,2007(15).
Authors:FANG Peng  HU Zong-fu
Abstract:An effective TOA algorithm which includes the influence of non-line-of sight(NLOS) Propagation when the Base stations are distributed arbitrarily is proposed. The main idea is that when identifying the NLOS error BS by the weight of each BS, the NLOS error is referred to the variable, and the nonlinear equation can be transformed into a maximum-likelihood(ML) linear estimation. This algorithm is simple and has higher accuracy. Then, other algorithms are compared with this.
Keywords:non-line-of-sight propagation  time of arrival  maximum likelihood(ML) estimation
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