METHOD FOR MAGNETICAL MEASURING WARSHIP

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 o...

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Bibliographic Details
Main Author TAKAHATA MITSUHIRO
Format Patent
LanguageEnglish
Published 21.07.2005
Edition7
Subjects
AIRCRAFT CARRIERS
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
MINE-LAYING
MINE-SWEEPING
OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS
PERFORMING OPERATIONS
PHYSICS
RELATED EQUIPMENT
SHIPS OR OTHER WATERBORNE VESSELS
SUBMARINES
TESTING
TRANSPORTING
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Summary: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
Bibliography:Application Number: JP20040002568