Carrier phase gps positioning device and method
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Abstract
A carrier phase GPS positioning device is disclosed, which acquires a carrier phase accumulation value of satellite signals at one time on the mobile station side, associates plural carrier phase accumulation values on the reference station side at plural times prior to the one time with the carrier phase accumulation value on the mobile station side, and estimates an integer ambiguity included in the carrier phase accumulation value of signals transmitted from the satellite received by the mobile station.
33 Citations
34 Claims
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1-17. -17. (canceled)
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18. A carrier phase GPS positioning device, comprising:
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a first integer ambiguity estimation unit that combines a plurality of first carrier phase accumulation data in a first duration extracted from data received from a satellite by a reference station at a fixed position, with one or more second carrier phase accumulation data received from the satellite by a mobile station in a second duration shorter than the first duration, and estimates an integer ambiguity included in the second carrier phase accumulation data; and
a positioning unit that determines the position of the mobile station using the integer ambiguity estimated by the first integer ambiguity estimation unit. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A carrier phase GPS positioning method, comprising the steps of:
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combining a plurality of first carrier phase accumulation data in a first duration extracted from data received from a satellite by a reference station at a fixed position, with one or more second carrier phase accumulation data received from the satellite by a mobile station in a second duration shorter than the first duration, and estimating an integer ambiguity included in the second carrier phase accumulation data; and
determining the position of the mobile station using the estimated integer ambiguity.
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31. A carrier phase GPS positioning method, comprising the steps of:
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acquiring a carrier phase accumulation value at one time on the mobile station side;
acquiring a plurality of carrier phase accumulation values at a plurality of times prior to the one time on the reference station side;
combining the carrier phase accumulation values on the reference station side at the plural times, with a carrier phase accumulation value on the mobile station side at the one time, and estimating an integer ambiguity included in the carrier phase accumulation value of signals transmitted from the satellite received by the mobile station.
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32. A carrier phase GPS positioning system, comprising:
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a reference station that extracts a plurality of first carrier phase accumulation data in a first duration based on received data from a satellite;
a carrier phase GPS positioning device including a first integer ambiguity estimation unit that combines the first carrier phase accumulation data with one or more second carrier phase accumulation data received from the satellite by a mobile station in a second duration shorter than the first duration, and estimates an integer ambiguity included in the second carrier phase accumulation data; and
a positioning unit that determines the position of the mobile station using the estimated integer ambiguity; and
a communication path that enables communication between the carrier phase GPS positioning device and the reference station.
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33. A reference station that extracts a plurality of first carrier phase accumulation data in a predetermined duration based on received data from a satellite, and transmits the first carrier phase accumulation data to a carrier phase GPS positioning device including an estimation unit that combines the first carrier phase accumulation data with one or more second carrier phase accumulation data received from the satellite by a mobile station in a second duration shorter than the predetermined duration, and estimates an integer ambiguity included in the second carrier phase accumulation data;
- and a positioning unit that determines the position of the mobile station using the estimated integer ambiguity.
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34. A reference station, comprising:
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an acquisition unit that acquires a carrier phase accumulation value at one time on a mobile station side;
an integer ambiguity estimation unit that combines a plurality of the carrier phase accumulation values at a plurality of times prior to the one time on the reference station side with the carrier phase accumulation value on the mobile station side, and estimates an integer ambiguity included in the carrier phase accumulation value on the mobile station side; and
a positioning unit that determines the position of the mobile station using the integer ambiguity estimated by the integer ambiguity estimation unit; and
a transmission unit that transmits the position detected by the positioning unit to the mobile station.
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Specification