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. 02, 2001
Filed:
Dec. 04, 1998
Applicant:
Inventor:
Jean-Pierre Arethens, Beaumont les Valence, FR;
Assignee:
Sextant Avionique, Velizy Villacoublay, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S 1/02 ;
U.S. Cl.
CPC ...
G01S 1/02 ;
Abstract
A satellite positioning receiver with velocity calculation integrity check. In order to increase the reliability of the velocity measurements by the receiver, it is proposed to measure the divergence between the measurements taken on n satellite director axes (n>4) and to given an alarm if this divergence exceeds a predetermined threshold. The divergence is measured by the mean square error between the calculated velocity vector and the velocities as measured along the director axes and projected on to the calculated velocity vector.