Design of an Underwater Real-Time Integrated Electromagnetic Detection System

Abstract

To address the issues of single physical quantity detection, poor real-time performance, and weak comprehensive adaptability in current underwater target electromagnetic detection systems, an underwater real-time integrated electromagnetic detection system was developed by using the technology of ultra-low noise signal detection and amplification, automatic gain control, etc. The system achieved high-precision electromagnetic signal acquisition, storage, and network real-time trans- mission within a wide dynamic range. Laboratory tests have validated the system’s ability to acquire high-precision electromagnetic field signals and transmit them in real time. The background noise of the electric field channel is 2 nV/\begin{document}$\sqrt {{\text{Hz}}} $\end{document}@1 Hz, and that of the magnetic field channel is 0.12 μV/\begin{document}$\sqrt {{\text{Hz}}} $\end{document}@1 Hz, while the network real-time transmission rate is 6.32 MB/s.

Keywords

• underwater target detection
• electromagnetic detection
• ultra-low noise signal detection
• real-time integrated observation