The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 01, 1982
Filed:
Mar. 05, 1980
Crouzet, Paris, FR;
Abstract
In a device for determining the direction of a line of sight, or the orientation of a sighting trihedron associated with said line of sight, defined by a magnetic azimuth angle, an elevation angle and an inclination angle determined in a reference trihedron, a sighting unit defines the sighting trihedron and a gravimetric detector measures components of the gravity acceleration vector in the sighting trihedron. A microprocessor computes the elevation and inclination angles in terms of the components of the gravity acceleration vector, and a magnetometric detector measures components of the earth magnetic field vector in the sighting trihedron. The sighting and reference trihedrons define long and cross axes and the microprocessor computes the components of the earth magnetic field vector along long and cross axes in terms of the components of the earth magnetic field vector. The magnetic azimuth angle is computed in terms of the components along the long and cross axes.