南京师大学报（自然科学版）2017，Vol.40Issue(3)：102-109,8.DOI:10.3969/j.issn.1001-4616.2017.03.015
反射与噪声对室内可见光定位系统精度影响及其克拉美罗界
Errors and the Cramer-Rao Bound Caused by Reflection and Noise on Visible Light Positioning System
摘要
Abstract
The visible light indoor positioning system based on received signal strength(RSS)has positioning error due to the disturbance of the wall reflection and the external noise. This system applies Phong in computer graphics to the wall reflection of visible light positioning. Comparing signal strength from LEDs directly with the reflection and noise simula-tion at the receiving,it is found that signal strength of the wall reflection and direct strength are in the same order of magnitude. Thus the disturbance of the wall reflection and the external noise cannot be ignored. This article compares the simulation error caused by the disturbance to the positioning system with Cramer-Rao bound which represents the lower limit of the positioning error. It is found that maximum error is 1.8 m and the average error is 0.12 m. The disturbance phenomenon is obvious in the corner of the wall.关键词
可见光/定位/反射/噪声/克拉美罗界Key words
visible light/positioning/wall reflection/external noise/cramer-rao bound分类
信息技术与安全科学引用本文复制引用
张秀楠,邵建华,柯炜,袁亚男,聂帅..反射与噪声对室内可见光定位系统精度影响及其克拉美罗界[J].南京师大学报（自然科学版）,2017,40(3):102-109,8.基金项目
教育部博士点基金(2013102SBJ0265). （2013102SBJ0265）
