Dynamic magnetic anomaly compensation

Details Dynamic magnetic anomaly compensation Dynamic magnetic anomaly compensation

2008-07-15

2008-07-15

Lefkowitz, Edward (Department: 2862)

Electricity: measuring and testing

Magnetic

Magnetometers

C324S202000, C033S356000, C073S001770, C073S001780, C367S125000, C367S131000

Reexamination Certificate

active

07400142

ABSTRACT:
An array of three-axis magnetometers used for dynamic magnetic anomaly compensation are located at the corners of a parallelopiped, with pairs of magnetometer outputs used to derive a magnetic anomaly gradient vector used to compensate a compass and/or the output of a gyroscope in an inertial management unit. The system may be used in a neutrally buoyant remotely operated vehicle to permit ascertaining of course and position in the absence of surface control signals.

REFERENCES:
patent: 3942257 (1976-03-01), Erspamer
patent: 5682335 (1997-10-01), Assous et al.
patent: 6476610 (2002-11-01), Wiegert et al.
patent: 6543146 (2003-04-01), Smith et al.

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