METHOD FOR FINDING UNDERWATER FERROMAGNETIC OBJECTS Russian patent published in 2007 - IPC G01V3/08 

FIELD: technology for reconnaissance with usage of magnetic fields, possible use for finding underwater ferromagnetic objects.

SUBSTANCE: in accordance to method, to magnetic field sources are towed along research strip. Limits of research strip are set by dispersing ferromagnetic material, formed in form of masses in 1m³, positioned at distance of 80-170 meters from each other along axis of boundary with creation of a tetragon. By means of block for monitoring alternating operation of towed magnetic field sources, registration of total magnetic field of towed sources and ferromagnetic masses is performed by primary three-component transformer of magnetic field. Registered signals of total magnetic field of towed sources and ferromagnetic masses are amplified and transformed by a secondary transformer. Amplified and transformed signals of total magnetic field of towed sources and ferromagnetic masses are dispatched to computing block, in computing block, signal is determined, generated due to presence of ferromagnetic masses or underwater ferromagnetic object. Signal is sent from computing block to executing block with its following relay to monitoring block. Monitoring block ensures movement of towed magnetic field sources within given limits of research strip by means of determining signal coordinates in navigation module.

EFFECT: extended research strip.

2 dwg