Method for combined use of local positioning system and a global positioning system
First Claim
Patent Images
1. A method for positioning or navigating an object associated with both a local reference receiver and a wide-area differential satellite positioning system, comprising:
- determining a floating ambiguity value and a first position of the object in accordance with carrier-phase measurements using the wide-area differential satellite positioning system;
determining a first position of the local reference receiver in accordance with carrier-phase measurements using the wide-area differential satellite positioning system;
determining a position offset of the local reference receiver in accordance with the first position of the local reference receiver and a second position of the local reference receiver, wherein the second position of the local reference receiver is pre-determined; and
determining a second position of the object in accordance with the first position of the object and the position offset.
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Abstract
The present invention includes a method for a combined use of a local RTK system and a regional, wide-area, or global differential carrier-phase positioning system (WADGPS) in which disadvantages associated with the RTK and the WADGPS navigation techniques when used separately are avoided. The method includes determining a floating ambiguity value and a first position of an object using WADGPS in a first mode of operation, and determining a second position of the object using the local RTK system in a second mode of operation.
18 Citations
18 Claims
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1. A method for positioning or navigating an object associated with both a local reference receiver and a wide-area differential satellite positioning system, comprising:
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determining a floating ambiguity value and a first position of the object in accordance with carrier-phase measurements using the wide-area differential satellite positioning system; determining a first position of the local reference receiver in accordance with carrier-phase measurements using the wide-area differential satellite positioning system; determining a position offset of the local reference receiver in accordance with the first position of the local reference receiver and a second position of the local reference receiver, wherein the second position of the local reference receiver is pre-determined; and determining a second position of the object in accordance with the first position of the object and the position offset. - View Dependent Claims (2, 3)
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4. A method for positioning or navigating an object associated with both a local reference receiver and a wide-area differential satellite positioning system, comprising:
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determining a floating ambiguity value and a first position of the object in accordance with carrier-phase measurements using the wide-area differential satellite positioning system in a first mode of operation; and determining a second position of the object in accordance with information received from the local reference receiver using real-time kinematic positioning in a second mode of operation. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12)
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13. A computer readable medium storing therein computer readable program instructions that, when executed by a processor, cause the processor to perform a method for positioning or navigating an object associated with both a local reference receiver and a wide-area differential satellite positioning system, the program instructions comprising:
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instructions for determining a floating ambiguity value and a first position of the object in accordance with carrier-phase measurements using the wide-area differential satellite positioning system; instructions for determining a first position of the local reference receiver in accordance with carrier-phase measurements using the wide-area differential satellite positioning system; instructions for determining a position offset of the local reference receiver in accordance with the first position of the local reference receiver and a second position of the local reference receiver, wherein the second position of the local reference receiver is pre-determined; and instructions for determining a second position of the object in accordance with the first position of the object and the position offset.
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14. A computer readable medium storing therein computer readable program instructions that, when executed by a processor, cause the processor to perform a method for positioning or navigating an object associated with both a local reference receiver and a wide-area differential satellite positioning system, the program instructions comprising:
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instructions for determining a floating ambiguity value and a first position of the object in accordance with carrier-phase measurements using the wide-area differential satellite positioning system in a first mode of operation; and instructions for determining a second position of the object in accordance with information received from the local reference receiver using real-time kinematic positioning in a second mode of operation.
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15. A satellite navigation receiver configured to operate in a first mode and a second mode of operation, wherein in the first mode of operation a floating ambiguity value and a first position of an object are determined in accordance with carrier-phase measurements using a wide-area differential satellite positioning system, and wherein in the second mode of operation a second position of the object is determined in accordance with information received from a local reference receiver using real-time kinematic positioning.
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16. A satellite navigation receiver, comprising:
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a memory; a processor; and a program, stored in the memory and executed by the processor, the program including; instructions for determining a floating ambiguity value and a first position of an object in accordance with carrier-phase measurements using a wide-area differential satellite positioning system; instructions for determining a first position of a local reference receiver in accordance with carrier-phase measurements using the wide-area differential satellite positioning system; instructions for determining a position offset of the local reference receiver in accordance with the first position of the local reference receiver and a second position of the local reference receiver, wherein the second position of the local reference receiver is pre-determined; and instructions for determining a second position of the object in accordance with the first position of the object and the position offset.
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17. A satellite navigation receiver, comprising an integrated circuit configured to perform:
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operations for determining a floating ambiguity value and a first position of an object in accordance with carrier-phase measurements using a wide-area differential satellite positioning system; operations for determining a first position of a local reference receiver in accordance with carrier-phase measurements using the wide-area differential satellite positioning system; operations for determining a position offset of the local reference receiver in accordance with the first position of the local reference receiver and a second position of the local reference receiver, wherein the second position of the local reference receiver is pre-determined; and operations for determining a second position of the object in accordance with the first position of the object and the position offset.
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18. A satellite navigation receiver, comprising:
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a memory means; a processor means; and a program means, stored in the memory means and executed by the processor means, for positioning or navigating an object, the program means including; instructions for determining a floating ambiguity value and a first position of an object in accordance with carrier-phase measurements using a wide-area differential satellite positioning system; instructions for determining a first position of a local reference receiver in accordance with carrier-phase measurements using the wide-area differential satellite positioning system; instructions for determining a position offset of the local reference receiver in accordance with the first position of the local reference receiver and a second position of the local reference receiver, wherein the second position of the local reference receiver is pre-determined; and instructions for determining a second position of the object in accordance with the first position of the object and the position offset.
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Specification