Abstract
Aiming at the problem that traditional underwater detection technology has been unable to meet the detection requirements, a new type of power-frequency (50Hz) magnetic field detection method is proposed. The space power frequency magnetic field model of the ferromagnetic cylindrical underwater target is deduced, and the magnetic anomaly of the ferromagnetic cylindrical underwater target rotating 0°, 30°, and 90° along the axis direction under the background of the power frequency magnetic field is simulated. The field distribution is further analyzed for the three-component magnetic anomaly spatial distribution law of ferromagnetic underwater targets. Through experiments on the scaled model, the magnetic induction intensity of the scaled model is measured, and the correctness and consistency of the spatial distribution of the power frequency magnetic anomalies of the ferromagnetic cylinder are verified, which is provided thinking for the design of power frequency electromagnetic detection of underwater targets.
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