Water surface information relay system used for bionic machine fish

A water surface information relay system of bionic machinery fish comprises video information relay and digital information relay. It is featured as setting light emitter and level conversion module M1 in machinery fish; setting light receiver, high frequency radio transmission module, level conversion module M2, low frequency radio module W2, double-ring antenna and power supply in water surface floating beacon; connecting units in said beacon to machinery fish, sending video-digital signal to ground control table by radio modules of high frequency and low frequency.