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:
Dec. 30, 2014
Filed:
Oct. 26, 2009
Naomi Fujisawa, Nishinomiya, JP;
Katsuo Yamada, Nishinomiya, JP;
Yoji Goto, Nishinomiya, JP;
Hiraku Nakamura, Nishinomiya, JP;
Naomi Fujisawa, Nishinomiya, JP;
Katsuo Yamada, Nishinomiya, JP;
Yoji Goto, Nishinomiya, JP;
Hiraku Nakamura, Nishinomiya, JP;
FURUNO Electric Company Limited, Nishinomiya, Hyogo-Pref., JP;
Abstract
A pseudo range is corrected with high accuracy using a pseudo range correction method that incorporates carrier smoothing. A code pseudo range correction unit () performs carrier smoothing of an L1 code pseudo range (PR(i)) by the temporal change (ΔADR(i)) in an L1 carrier phase, and performs carrier correction of a code ionosphere delay (I(i)) by the temporal change (ΔI(i)) in a carrier ionosphere delay. The code pseudo range correction unit () performs ionosphere delay correction by subtracting the corrected ionosphere delay (I'sm(i)) from the L1 code pseudo range (PRsm(i)) after smoothing processing. At this time, a direction of the delay in the temporal change (ΔI(i)) in the carrier ionosphere delay included in the temporal change (ΔADR(i)) in the L1 carrier phase is matched with a direction of the delay in the temporal change (ΔI(i)) in the carrier ionosphere delay used to calculate the corrected ionosphere delay (I′sm(i)).