摘要
目的:欲提出一种基于接收信号强度检测的可见光室内定位技术。方法:由四个LED光源发出信号光,被待定位设备上的光探测器接收。利用带通滤波和傅里叶变换,降低噪声并提取源信号。采用三边法估算位置坐标,确定待定位设备的位置。结果:实验结果表明,RSSI可见光定位的误差在5 cm以内。结论:本技术有效提高了定位精度,具有实际应用意义。
Aims:This paper proposed an indoor positioning technique on received signal strength indication(RSSI)of visible light.Methods:Light signals from four LED sources was received by the detectors on the device to be positioned.The received light signal was processed by using band pass filtering and Fourier transform to reduce the noises.The position coordinates is estimated by the trilateral positioning method to determine the position of the equipment to be located.Results:The experimental result shows that the error range of RSSI of visible light positioning is less than 5 cm.Conclusions:The algorithm of this method improved the positioning accuracy.
作者
余桂英
金炜佳
YU Guiying;JIN Weijia(College of Metrology and Measurement Engineering,China Jiliang University,Hangzhou 310018,China)
出处
《中国计量大学学报》
2020年第1期21-25,78,共6页
Journal of China University of Metrology
基金
浙江省公益技术应用研究计划项目(No.LGG18F050001)。
关键词
室内定位
可见光
接收信号强度
三边法
indoor positioning
received signal strength indication
visible light
trilateral positioning method
