Long Distance Commucation Technology of Deep sea Acoustic Release Transponder

Deep-sea examination and oceanographic surveys have become normally, deep sea acoustic release transponder is an important guarantee for mass laying and reliable release of instruments. This paper proposes pseudo-random code and wideband multiple access technology, which has been used in the self-developed product of 6000m acoustic releaser. The technology increases the processing gain and allows the releaser to communicate robustly over long distances at low signal-to-noise ratios, which is proved by the experimentation the lake and in the sea that the method is effective.