System and method for using data phase to reduce position ambiguities
First Claim
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1. A method, comprising:
- identifying an initial position point on a range intersection curve that is consistent with a code phase measurement and a data phase measurement of a positioning satellite signal that is taken by a mobile terminal; and
performing an iterative calculation process on the initial position point to produce a final position solution for the mobile terminal.
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Abstract
A geographic tracking system with minimal power and size required at the mobile terminal collects observation data at the mobile terminal and forwards the data to a processor, which calculates the position. The mobile terminal is configured to measure both code phase and data phase of a GPS satellite signal. The code phase and data phase information enables the processor to reduce the number of candidate points to be considered.
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Citations
20 Claims
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1. A method, comprising:
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identifying an initial position point on a range intersection curve that is consistent with a code phase measurement and a data phase measurement of a positioning satellite signal that is taken by a mobile terminal; and performing an iterative calculation process on the initial position point to produce a final position solution for the mobile terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system, comprising:
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one or more circuits that enable determination of a location of a mobile terminal, the one or more circuits being operable to; identify an initial position point on a range intersection curve that is consistent with a code phase measurement and a data phase measurement of a positioning satellite signal that is taken by the mobile terminal; and perform an iterative calculation process on the initial position point to produce a final position solution for the mobile terminal. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A non-transitory machine-readable storage having stored thereon, a computer program having at least one code section for determining a location of a mobile terminal, the at least one code section being executable by a machine for causing the machine to perform steps comprising:
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identifying an initial position point on a range intersection curve that is consistent with a code phase measurement and a data phase measurement of a positioning satellite signal that is taken by the mobile terminal; and performing an iterative calculation process on the initial position point to produce a final position solution for the mobile terminal. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification