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:
May. 16, 2017
Filed:
Nov. 29, 2013
Thales, Neuilly-sur-Seine, FR;
Sebastien Trilles, Toulouse, FR;
THALES, Courbevoie, FR;
Abstract
A method for determining an error in the estimation of time taken to cross the ionosphere by a signal along a vertical sight axis associated with a receiver, the vertical sight axis cutting the ionosphere at a point of interest, the vertical sight axis being an axis passing through the receiver and a satellite of interest, comprises: determining at least two points of cutting of the ionosphere by two sight axes between a satellite and at least two ground stations; determining at least one angle formed by segments going from the point of interest to two of the cutting points; and determining the spatial dispersion of the cutting points with respect to the point of interest on the basis of the angle, by finding the difference with a predetermined angle and taking the average of the difference or differences.