Magnetic anomaly guidance system and method

Details Magnetic anomaly guidance system and method Magnetic anomaly guidance system and method

2005-03-08

2005-03-08

Nguyen, Thu V. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Automatic route guidance vehicle

C324S246000

Reexamination Certificate

active

06865455

ABSTRACT:
A system and method for magnetic anomaly guidance is provided. Triaxial magnetometer (TM) sensors are positioned at the vertices of an arrangement with an axis of the arrangement, being defined between each pair of the vertices. The arrangement is positioned on a support such that one of the X,Y,Z magnetic sensing axes for all of the sensors defines a forward direction of movement. The sensed magnetic field's X,Y,Z components of the TM sensors are processed to generate a partial gradient contraction associated with each axis of the sensor arrangement. Relationships between the partial gradient contractions are used to generate steering control commands for use by a steering system that is coupled to the support.

REFERENCES:
patent: 5777477 (1998-07-01), Wynn
patent: 6242907 (2001-06-01), Clymer et al.
patent: 6339328 (2002-01-01), Keene et al.
Polvani, “Magnetic Guidance of Autonomous Vehicle Part 2”, Jun. 1987, Unmanned Untethered Submersible Technology, Proceedings of the 1987 5th International Symposium on Jun. 1987, vol. 5, pp. 257-264.

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