Abstract:This paper describes the characteristics and classification of warship’s magnetic field firstly, and indicates that it is better to distinguish the fixed and induced magnetic field of the warship under zero magnetic space. Secondly, through optimizing the design, combining the characteristics of the warship and the building, the coils are kept away from the doors and windows of the building, and a zero magnetic space with large slenderness ratio is designed. The test results show that in the area of Ф2 m×24 m, the magnetic field strength achieves ±100 000 nT, the heterogeneity reaches 3. 7%, and the measured results are consistent with the design values.
