Title:
NAVIGATION SATELLITE SYSTEM RECEPTION DEVICE, METHOD FOR PROCESSING NAVIGATION SATELLITE SIGNAL FROM SAME, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2020/013284
Kind Code:
A1
Abstract:
Provided is a navigation satellite system reception device with which it is possible to effectively exclude a multipath signal not associated with a direct wave from an invisible satellite in a reception environment in which open space is greatly limited, and to realize highly precise time synchronization or position measurement. The present invention comprises: a satellite trajectory information acquisition unit 42 that acquires trajectory information pertaining to a navigation satellite; an installation position information acquisition unit 43 that acquires position information pertaining to an installation position; a goniometer 3 that acquires heading information pertaining to a heading in which a wall surface of a nearby object is present; and a heading mask generation unit 44 that calculates, on the basis of the heading information, a mask region for selecting a navigation satellite as a target of processing. A position measurement/time synchronization processing unit 45 calculates the headings and elevations of navigation satellites on the basis of the trajectory information and the position information, selects a navigation satellite as a target of processing on the basis of the calculated headings and elevations as well as the mask region, and performs a position measurement process and/or a time synchronization process on the basis of a navigation satellite signal received from the selected navigation satellite.
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Inventors:
YOSHIDA SEIJI (JP)
FUJIWARA MASAKATSU (JP)
FUJIWARA MASAKATSU (JP)
Application Number:
PCT/JP2019/027537
Publication Date:
January 16, 2020
Filing Date:
July 11, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G01S19/22; G01C21/28; G01S19/28
Foreign References:
| US20140266884A1 | 2014-09-18 | |||
| JP2009288131A | 2009-12-10 | |||
| JP2001289652A | 2001-10-19 | |||
| US20080166011A1 | 2008-07-10 | |||
| JP2010534849A | 2010-11-11 | |||
| JP2006047218A | 2006-02-16 |
Other References:
NISHI, KEISUKE ET AL.: "Improvement of the time synchronization precision by the network- assisted GPS time synchronization systems", IEICE TECHNICAL REPORT, vol. 115, no. 406, January 2016 (2016-01-01), pages 1 - 6, ISSN: 0913-5685
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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