Doppler correction of mobile acoustic communication via adjustable AD sampling rate

Abstract

This paper presents a hardware Doppler suppression method for underwater acoustic (UWA) communication with compact-sized underwater platforms such as autonomous underwater vehicles (AUVs). The proposed method adopts an adjustable AD (analog-to-digital) sampling rate, leading to significant reductions in the computational complexity of the communication receiver. Both direct sequence spread spectrum (DSSS) and channel coding technology are incorporated into the proposed Doppler compensation method to design a mobile UWA communication system. Sea experiments have been conducted with moving vehicles, and the experimental results have demonstrated the effectiveness of the proposed method.