Title:
POSITION MEASUREMENT DEVICE, POSITION MEASUREMENT METHOD, AND POSITION MEASUREMENT PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/233865
Kind Code:
A1
Abstract:
[Problem] To calculate a highly reliable precision index using only a GNSS signal. [Solution] This position measurement device 10 comprises a reception unit 20, a position measurement calculation unit 30, an individual precision index calculation unit 41, and an integrated precision index calculation unit 42. The reception unit 20 receives position measurement signals from a plurality of position measurement satellites SAT. The position measurement calculation unit 30 uses the received plurality of position measurement signals to perform a position measurement calculation. The individual precision index calculation unit 41 uses an error covariance matrix used in the position measurement calculations, a carrier phase from the position measurement signal, or a position measurement result from the position measurement calculations to calculate a plurality of mutually different individual precision indexes. The integrated precision index calculation unit 42 uses the plurality of individual precision indexes to calculate an integrated precision index.
Inventors:
ENDO MASAAKI (JP)
Application Number:
PCT/JP2023/016179
Publication Date:
December 07, 2023
Filing Date:
April 24, 2023
Export Citation:
Assignee:
FURUNO ELECTRIC CO (JP)
International Classes:
G01S19/20; G01S19/23
Domestic Patent References:
| WO2020066155A1 | 2020-04-02 |
Foreign References:
| JP2006518466A | 2006-08-10 | |||
| JP2019138911A | 2019-08-22 | |||
| JP2017173137A | 2017-09-28 | |||
| JP2008209227A | 2008-09-11 | |||
| US9369896B1 | 2016-06-14 |
Other References:
Z. TAKAYAMA, T. URAKUBO, T. TOMINAGA, H. TAMAKI: "Accuracy Enhancement of GNSS/INS Positioning in Dense Urban Environments with NLOS Signal Rejection based on Geometric Model. ", SHISUTEMU-SEIGYO-JôHô-GAKKAI-RONBUNSHI = TRANSACTIONS OF THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS, KYÔTO : GAKKAI, JP, vol. 34, no. 2, 15 February 2021 (2021-02-15), JP , pages 37 - 46, XP009551096, ISSN: 1342-5668
ASARI KOKI, SAITO MASAYUKI, TAKIGUCHI JUN-ICHI: "RTK-PPP: Social Requirement and National Solution", PROCEEDINGS OF THE 28TH INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE DIVISION OF THE INSTITUTE OF NAVIGATION (ION GNSS+ 2015), 1 January 2015 (2015-01-01) - 18 September 2015 (2015-09-18), pages 1159 - 1173, XP093117115
ASARI KOKI, SAITO MASAYUKI, TAKIGUCHI JUN-ICHI: "RTK-PPP: Social Requirement and National Solution", PROCEEDINGS OF THE 28TH INTERNATIONAL TECHNICAL MEETING OF THE SATELLITE DIVISION OF THE INSTITUTE OF NAVIGATION (ION GNSS+ 2015), 1 January 2015 (2015-01-01) - 18 September 2015 (2015-09-18), pages 1159 - 1173, XP093117115
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