Methods of Differential Submarine Detection Based on Magnetic Anomaly and Technology of Probes Arrangement

Abstract

Magnetic anomaly submarine detection methods detect submarines by the additional magnetic field generated by the ferromagnetic shell. Using a single magnetic measurement probe to detect submarines has difficult to overcome the background signal interference of geomagnetic field. So, this paper propose multi-probe method based on differential detection principle. It's advantage is that it can filter out the background noise, but as the magnetic field is directional, this approach has problem of blind zone. To overcome the problem of blind zone, this paper proposes two solutions. By comparing the submarine detection range of the two schemes, the detection system with four probes in two detection directions is demonstrated to have better detection effect, which overcomes the problem of blind zone and makes the detection distance farther.