Gray level image transmission method based on underwater acoustic communication

The invention relates to a gray level image transmission method based on underwater acoustic communication. The method includes the steps that firstly, images are acquired and the compressed and converted images are stored in a serial port communication cache module of an underwater sender and are about to be sent; secondly, connection between the sender and a receiver is established; thirdly, a data sending mode of the sender and a data receiving mode of the receiver are determined; finally, overtime detection is conducted. According to the method, the detection range of underwater acoustic image transmission is greatly enlarged, the restraint of a cable is avoided, and underwater multi-point imaging measurement and control are possible. Meanwhile, the method can be applied to cable-free equipment such as an AUV.