Design of high performance underwater multi-channel data acquisition and processing system

To address the issues of miniaturization, low power consumption, and high signal-to-noise ratio in the receiving electronic systems of underwater unmanned equipment, this paper investigates key technologies such as multi-channel acquisition technology and field programmable gate array(FPGA) technology. By reducing the equivalent input noise of the analog digital converter(ADC), the dynamic range of the received signal is improved. The parallel computing advantage and flexible configurability of FPGA reduce the number of boards, thereby lowering system complexity. An improved design was applied to the original synthetic aperture sonar underwater receiving electronic system. The improved underwater electronic receiving system has reduced its volume by 55%, weight by 53%, and power consumption by 61%. Furthermore, due to the increased signal-to-noise ratio, it can operate at a greater distance.