Analysis and comparison on magnetic field modeling method of submarine

Model of submarine magnetic field should be known when detecting the submarine by use of magnetic anomaly detection(MAD).Submarine magnetism substance distributes complexly,so it is very difficult to evaluate the magnetism using analytic method directly.A few effective methods on magnetic field modeling of submarine have been gained by development in the newly several decades.This paper analyzes several actual modeling method on submarine magnetism.The keystone of each method is expatiated and applicability scope is analyzed.At last the choice of methematics models on submarine magnetic field is explained.