LIU Chen, CONG Sunli, ZHU Zhengwei, et al. Improved 3D localization model based on least square method in NLOS environment[J]. 2020, (6): 41-44. DOI: 10.13873/J.1000-9787(2020)06-0041-04.
用尽可能少的基站完成对终端设备的高精度定位。实验结果表明:在NLOS环境下所提模型最大定位误差不超过1. 5 m
定位精度显著提高并优于其他定位模型。
Abstract
Aiming at the problem of three dimensional( 3D) localization of mobile terminals in indoor non-line-ofsight( NLOS) wireless environment
an improved 3 D positioning model based on the least square method in nonline-of-sight environment is proposed. Firstly
the linear relationship between the true value of the wireless signal time of arrival( TOA) and the measured value can be found. Then
according to the linear relationship
the mobile terminal is positioned in 3D by using the least squares. Next
the data model for the target of positioning optimization is set
and the high-precision positioning of the terminal equipment is completed with as few base stations as possible. The experimental results show that the maximum positioning error of the model in NLOS environment is not more than 1. 5 m
the positioning precision is significantly improved and prior to other positioning models.