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:
Jan. 03, 2017
Filed:
Jun. 02, 2014
Sagem Defense Securite, Boulogne-Billancourt, FR;
David Roberfroid, Boulogne-Billancourt, FR;
Vincent Cournou, Boulogne-Billancourt, FR;
SAGEM DEFENSE SECURITE, Boulogne-Billancourt, FR;
Abstract
The invention relates to a method for the autocalibration of an inertial rig comprising an inertial core defining a sensor reference frame, implemented in the course of at least two missions (M, M) each comprising the determination, on the basis of measurements of gyroscopes, of the orientation of the rig in a reference frame comprising the north axis (N) and the vertical axis (Up), the method comprising the implementation:—in the course of a mission (M), of an estimation () of drift errors of the gyroscopes for the orientation of the rig at least with respect to the north axis (dgyrN); and—in the course of a following mission (M), of a calculation () of corrections of drift errors (DX) of the sensor reference frame (X,Y,Z), on the basis of the estimated drift errors; and—of a calculation () of drift errors (X), consisting in correcting drift errors (X) of the sensor reference frame that were calculated during the previous mission (M).