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Title:
POSITIONING DEVICE
Document Type and Number:
Japanese Patent JP3801774
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a positioning device which uses a GLONASS satellite wherein high-precision positioning is allowed while positioning error is sufficiently suppressed.
SOLUTION: The positioning device comprises a satellite-pair selection part 6 wherein, when double phase difference is calculated at a double phase difference calculation part 3 based on a known-point carrier phase signal from a known-point carrier phase reception part 1 and an unknown-point carrier phase signal from an unknown carrier phase reception part 2, selection result through variation for each double phase difference among GLONASS satellites which receive both with known point and unknown point for less infer-satellite carrier frequency difference with a specific pair of reference satellites is outputted to the double phase difference calculation part 3 as a satellite-pair selection signal, instead of an existing reference satellite selection part wherein the selection result for a specific pair of reference satellites among the GLONASS satellites which receive both with known point and unknown point is outputted as a satellite selection signal.


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Inventors:
Shigeo Kawashima
Application Number:
JP8121398A
Publication Date:
July 26, 2006
Filing Date:
March 27, 1998
Export Citation:
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Assignee:
Japan Radio Co., Ltd.
International Classes:
G01S19/33; G01S19/35; G01S19/43; (IPC1-7): G01S5/14
Domestic Patent References:
JP63314482A
JP6160509A
JP9005420A
JP6265623A
Other References:
Povaliaev,"Using Single Differences for Relative Positioning in GLONASS",ION GPS 97,1997年,pages 929-934
Leick,"Processing GLONASS Carrier Phase Observations - Theory and First Experience",ION GPS 95,1995年,pages 1041-1047
Cooper,"Pre-processing of GNSS Sigals Subject to Interference",ION GPS 97,1997年,pages 1437-1446
Attorney, Agent or Firm:
Kenho Ikeda



 
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