Roll-independent magneto meter system
US4995165A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1989 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Sep 29, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/045
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A roll-independent magnetometer which may be used for example in a towed array magnetometer system comprises a first magnetic field sensor having iso-angular flux sensitivity about a roll axis and a second magnetic field sensor having sensitivity along the roll axis, the arrangement being such that a component of a magnetic field along the roll axis is measured by the second unidirectional sensor and the component of the field lateral to the roll axis is measured by the first sensor. Corrections may be applied for the inclination of the sensor and the angle of dip of the Earth's field. The angle of dip may be measured either in the towing vessel, in the towed body, or provided in look-up tabulated form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.