| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for magnetically measuring warships capable of separately measuring the permanent magnetism PLM and the vertical magnetism VM in the bow and stern directions of a warship. SOLUTION: Triaxial magnetic sensors 2 and 3 are arranged on the left and right sides of the warship 1 to be measured, and a triaxial magnetic sensor 4 is arranged at a sea bottom below the keel. Magnetic fields are measured with the triaxial magnetic sensors 2 and 3 when the bow of the warship to be measured is turned northward and southward. By computing their Hx components, the permanent magnetism PLM and the induced magnetism ALM in the bow and stern directions are separated from each other. A model of computed permanent magnetism PLM is created and converted into a magnetic field waveform of the triaxial magnetic sensor 4 to separate the magnetism PLM and the vertical magnetism VM in the bow and stern directions from each other. COPYRIGHT: (C)2005,JPO&NCIPI
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