Visible light positioning
The characteristics of visible light positioning
Compared with some traditional indoor positioning methods, visible light positioning has the following advantages:
①: Bandwidth, these frequency bands can be without authorization, and the transmission speed is fast;
②: No need to install additional infrastructure and low cost;
③ : Avoid electromagnetic interference, and can be installed in airplanes or hospitals;
④: LEDs are widely used, green, environmentally friendly, long service life, and cheap;
⑤: Light cannot penetrate walls, and uses light to transmit information, which is relatively safe ;
⑥: positioning accuracy is relatively high;
#一. The direct path of visible light
#二, a reflection path
to sum up
Simple modeling of visible light positioning.