Abstract
Aiming at the problems of city underground cable trench, a serious shortage of illumination light, GPS system receives signal which is very faint, proposed to visible light communication technology (VLC, visible light communication) and the power line carrier communication technology (PLC, power line communication) positioning system design and development scheme of combining. The technical principles and characteristics of VLC description, analysis function, and the key technology of the underground cable channel positioning system, and explain the application of the system and the effect of.
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