Analysis of Electric Field Interference Characteristics and Signal Detection Method Based on Ocean Buoys

Abstract

To solve the problems of electric field acquisition and target detection in the deep ocean environment, the interference characteristics of an electric field measured by a deep sea electric field detection buoy are analyzed. It has been confirmed that the energy of buoy shaking interference is primarily below 0.5 Hz and decreases with depth increases. The interference of the electric field can be reduced to 0.1 μV / m . Then, to detect the electric field signals of the buoy platform, an improved detection method based on adaptive threshold line spectrum energy sum is proposed, based on the analysis of interference characteristics. Simulation and experimental results show that the proposed improved algorithm can effectively detect the target electric field signals and reduce the false alarm probability while ensuring target detection probability.