Combined positioning method based on video monitoring and wireless communication in cable tunnel

The invention discloses a combined positioning method based on video monitoring and wireless communication in a cable tunnel. The method comprises the steps that a plurality of video monitoring unitsand a wireless communication system based on an optical fiber repeater and a leakage cable are installed in the cable tunnel; when operation and maintenance personnel work in a cable tunnel, a processor of the cable online monitoring main station platform realizes coarse positioning of the operation and maintenance personnel by using video monitoring and image identification algorithms and realizes fine positioning of the operation and maintenance personnel and defects by using mutual cooperation of a wireless communication system and a mobile terminal. The two positioning methods adopted by the invention are matched with each other and have a main and backup supplement function at the same time, so that accurate positioning of operation and maintenance personnel and defects in the tunnelcan be realized even if on