Title:
搬送波伝播距離のアンビギュイティ推定用分散カルマン・フィルタ・アーキテクチャ
Document Type and Number:
Japanese Patent JP6907083
Kind Code:
B2
Abstract:
Methods and apparatus for determining navigation data (124) using carrier range measurements obtained by a GNSS receiver for a plurality of GNSS satellites, the apparatus comprising: a first Kalman filter (100) configured to determine an a posteriori estimate of a first state vector based at least in part on a first set of GNSS measurements (104) obtained by the, and/or a further, GNSS receiver and an a priori estimate of the first state vector, the first state vector comprising carrier range ambiguity values relating to the plurality of GNSS satellites and a position of the, and/or the further, GNSS receiver; and a second Kalman filter (102) configured to determine an a posteriori estimate of a second state vector, which comprises the navigation data (124), based at least in part on a second set of GNSS measurements (106) obtained by the, and/or a further, GNSS receiver, an a priori estimate of the second state vector, and carrier range ambiguity data (126) based on the carrier range ambiguity values determined in the a posteriori estimate of the first state vector.
Inventors:
Christopher David Hyde
Alexander James Perkins
Alexander James Perkins
Application Number:
JP2017182789A
Publication Date:
July 21, 2021
Filing Date:
September 22, 2017
Export Citation:
Assignee:
u-blox AG
International Classes:
G01S19/44; G01S19/55
Domestic Patent References:
| JP2019529900A | ||||
| JP2005164395A | ||||
| JP5503775A | ||||
| JP2015125119A |
Foreign References:
| US5451964 | ||||
| CN108680942A |
Other References:
CAO Wei, et al.,Performance Evaluation of GPS/Galileo Multiple-frequency RTK Positioning Using a Single-difference Processor,Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008),米国,The Institute of Navigation,2008年09月19日,Pages 2841-2849
Attorney, Agent or Firm:
Hiroyuki Nagai
Yukitaka Nakamura
Yasukazu Sato
Satoru Asakura
Takeshi Sekine
Hiroshi Yoshimoto
Yukitaka Nakamura
Yasukazu Sato
Satoru Asakura
Takeshi Sekine
Hiroshi Yoshimoto