基于RSS的室内可见光差分修正定位算法

可见光通信技术是利用白光LED同时实现照明和通信的新型通信技术,为室内定位技术提供了新的可能.针对可见光通信中接收信号强度RSS随机波动较大的问题,提出一种基于RSS的改进的差分修正定位算法,通过将各个参考节点分别作为差分修正参考节点进行定位修正,规避了设定参考节点权重过大的问题.该定位算法有效地提高了室内定位精度,无需增加额外硬件设备,计算量小,容易实现.仿真结果表明,该定位算法在5m×5m×3m的空间区域中能够实现约15 cm的平均定位误差性能.

Indoor Visible Light Difference Correction Positioning Algorithm Based on RSS

The visible light communication(VLC) is the new green communication technology using white LED illumination. It provides a new possibility for indoor positioning. Based on the received signal strength (RSS) positioning technology, an improved difference correction algorithm was proposed, which puts reference nodes as the difference correction node respectively so as to avoid the situation of a reference node having too big decision in localization. The positioning algorithm with less reference nodes can significantly improve the accuracy of indoor positioning without additional hardware equipments. Simulation results show that the proposed location algorithm is guaranteed to achieve average positioning error below 15cm in the sapce region of 5m×5m×3m .