Title:
SATELLITE SIGNAL RECEPTION DEVICE, SATELLITE SIGNAL SELECTION METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/135863
Kind Code:
A1
Abstract:
A satellite signal reception device according to the present invention is provided with: a signal selection unit that selects a prescribed number of satellite signals on the basis of the reception quality of a satellite signal received by a GNSS antenna; and a measurement unit that performs positioning by using the prescribed number of satellite signals selected by the signal selection unit and determines an initial estimated position. The signal selection unit selects a plurality of satellite signals to be used for positioning or time synchronization, on the basis of a comparison result obtained by comparing a reception time when a satellite signal is expected to be received at the initial estimated position as a direct wave with the actual reception time of the satellite signal.
Inventors:
YOSHIDA SEIJI (JP)
Application Number:
PCT/JP2022/034447
Publication Date:
July 20, 2023
Filing Date:
September 14, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G01S19/22; G01S19/28
Domestic Patent References:
| WO2019171633A1 | 2019-09-12 |
Foreign References:
| JP2005069729A | 2005-03-17 | |||
| JP2020201282A | 2020-12-17 | |||
| JP2008045896A | 2008-02-28 | |||
| JP2010256301A | 2010-11-11 | |||
| JP2012520491A | 2012-09-06 | |||
| US20100231445A1 | 2010-09-16 |
Other References:
SEIJI YOSHIDA, KATSUNORI NORITAKE: "Improvement of the time synchronization precision in the multipath satellite signal reception environment by an algorithm for statistical satellite signals selection applied in the GPS receiver", IEICE TECHNICAL REPORT, vol. 116, no. 468, 16 February 2017 (2017-02-16), pages 7 - 12, XP055676183
YAMAMOTO, HARUO ET AL. : "Study on the Reliability Improvement of Multi-GNSS based Train Positioning", IEICE TECHNICAL REPORT, vol. 114, no. 152 (SANE2014-46), 18 July 2014 (2014-07-18), pages 19 - 26, XP009547753, ISSN: 0913-5685
YAMAMOTO, HARUO ET AL. : "Study on the Reliability Improvement of Multi-GNSS based Train Positioning", IEICE TECHNICAL REPORT, vol. 114, no. 152 (SANE2014-46), 18 July 2014 (2014-07-18), pages 19 - 26, XP009547753, ISSN: 0913-5685
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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