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. 30, 2017
Filed:
Feb. 17, 2012
Vladimir Viktorovich Veitsel, Moscow, RU;
Mark Isaakovich Zhodzishsky, Moscow, RU;
Viktor Abramovich Veitsel, Moscow, RU;
Andrey Vladimirovich Veitsel, Moscow, RU;
Dmitry Pavlovich Nikitin, Moscow, RU;
Andrey Valeryevich Plenkin, Moscow Rigion, RU;
Vladimir Viktorovich Veitsel, Moscow, RU;
Mark Isaakovich Zhodzishsky, Moscow, RU;
Viktor Abramovich Veitsel, Moscow, RU;
Andrey Vladimirovich Veitsel, Moscow, RU;
Dmitry Pavlovich Nikitin, Moscow, RU;
Andrey Valeryevich Plenkin, Moscow Rigion, RU;
Topcon Positioning Systems, Inc., Livermore, CA (US);
Abstract
A navigation receiver operating in a differential navigation mode can change from one solution type to another. At each epoch, primary estimates of coordinates and the solution type are received. Each solution type has a corresponding accuracy. To improve the positioning quality when the solution type changes, smoothed estimates of coordinates are generated according to a two-branch algorithm. Two conditions are evaluated. If both conditions are satisfied, the current-epoch smoothed estimates of coordinates are set equal to the current-epoch extended estimates of coordinates calculated from the sum of the previous smoothed estimates of coordinates and coordinate increments calculated from carrier phases. If at least one of the conditions is not satisfied, updated smoothed estimates of coordinates are generated based on the sum of the current-epoch extended estimates of coordinates and a correction signal.