非视距环境下基于RSS-TOA的定位算法

doi:10.11959/j.issn.1000-0801.2019146

Abstract

Abstract:

The existence of non-line-of-sight (NLOS) error can degrade the positioning performance in wireless sensor network localization system,especially in indoor localization.To overcome the localization error caused by NLOS propagation,a localization algorithm was proposed based on received signal strength (RSS) and time-of-arrival (TOA).Firstly,a non-convex optimization problem was established based on RSS and TOA.Then,the original non-convex optimization problem was transformed into a convex optimization problem through the second-order cone relaxation technique,therefore a sub-optimal solution to the original problem could be obtained efficiently.Finally,computer simulation results show that the proposed method can provide higher estimation accuracy and better performance.

Key words: received signal strength, time-of-arrival, second-order cone relaxation, non-line-of-sight

CLC Number:

TP393

Zhigang LU,·ouming LI,Xianghong JIA,Shengming CHANG,Xiaoli WANG. RSS-TOA based localization algorithm in non-line-of-sight environment[J]. Telecommunications Science, 2019, 35(9): 107-113.

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References 17

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