一种基于可见光信标的室内定位系统及实现

摘要

设计了一种基于LED可见光信标的室内定位系统，具有成本低、功耗低、调制解调算法简单等优点，实验数据表明，使用光学天线可以明显减小误码率并增大可见光通信的传输距离，该室内系统定位最小所需时间为76 ms，当LED信标高度为1 m时，定位精度约为20 cm。%A LED beacon based indoor positioning system is designed, which has advantages of low power, low cost and simple modulation/demodulation. Experimental results show the use of optical antenna can improve the BER performance of visible light communication system. The minimum delay to receive beacon ID is 76 ms, and the positioning accuracy is around 20 cm when the LED beacon height is 1 m.