文章摘要信息 关键词 : 无线定位 到达时间差 非视距误差 卡尔曼滤波 [gap=829]Keywords : wireless location;TDOA;NLOS error;kalman filter
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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.
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。
参考来源 - 一种NLOS环境下TOA定位算法和算法比较—《电脑知识与技术》—2007年第23期—龙源期刊网Then the simulation test on TDOA technique has been made and theresults have been analyzed. At last, aiming at non-line-of-sight (NLOS) propagation problem, this thesis proposes a location algorithm for mitigating the influence of it.
最后,针对非视距传播问题,从判决和消除非视距误差相结合的观点出发,提出了一种减轻非视距影响的定位算法。
参考来源 - CDMA系统中的无线定位技术研究Considering the characteristics of WSN, the traits of the NLOS error and the typical NLOS error mitigation/elimination algorithms are analyzed and the unsuitabilities of these algorithms are discussed if they were used in the localization in WSN.
文章分析了NLOS传播的特点和典型的减小或消除非视距误差的算法,并结合无线传感器网络的特点分析了传统算法应用于无线传感器网络中的不足。
参考来源 - 无线传感器网络节点定位算法的分析与研究·2,447,543篇论文数据,部分数据来源于NoteExpress
本文对非视距环境下的定位技术进行了深入研究,提出了两种非视距误差消除的方案。
We made an intensive study aiming at location technique in NLOS environment and proposed two NLOS error mitigation schemes.
距离测量误差包含测量噪声和非视距误差两部分,其中非视距误差是位置估计的主要误差来源。
The distance measurement errors include errors of measuring noise and non-line of sight, of which NLOS error is the main source of error in location estimation.
在无线传感器网络定位中,节点精确定位面临的一个主要问题是信号的非视距传播,非视距误差是节点定位误差的主要来源。
A key obstacle to high accuracy location is the Non Line of Sight (NLOS) transmission of signal in wireless sensor network node localization. NLOS error is the main source of location error.
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