Portable base station network for local differential GNSS corrections
First Claim
1. A positioning system for differentially computing a location of a rover unit with a differential Global Navigation Satellite System (GNSS) including a master base station with a master base GNSS antenna, a master base GNSS receiver coupled to the base GNSS antenna and a master base communication system including a master base transmitter;
- and a secondary base station with a secondary base GNSS antenna, a secondary base GNSS receiver coupled to the secondary base GNSS antenna and a secondary base communication system including a secondary base transmitter;
the positioning system including a computer system configured to;
calculate a position offset corresponding to an offset between differential corrections created by the master base station and the secondary base station;
transmit the position offset to the rover unit as the rover unit transitions from a coverage area for one of the master and secondary base station to a coverage area for the other one of the master and secondary base station; and
cause the rover unit to correct a rover GNSS-defined position with the position offset.
1 Assignment
0 Petitions
Accused Products
Abstract
A DGNSS-based guidance system, wherein a rover receiver first utilizes data from a master base station transceiver, a DGNSS reference network, or some other differential source to compute a differentially corrected location to establish a reference DGNSS relationship. Using this location and data observed only at the rover, the rover computes an internal set of differential corrections, which set is stored in computer memory, updated as necessary, and applied in future times to correct observations taken by the rover. As the rover enters into areas of other base station receiver reference networks, the rover transceiver will send positional information it receives from the master base station to the new, secondary base station. The secondary base station then calibrates its own reference information using information sent from the original master base station.
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Citations
21 Claims
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1. A positioning system for differentially computing a location of a rover unit with a differential Global Navigation Satellite System (GNSS) including a master base station with a master base GNSS antenna, a master base GNSS receiver coupled to the base GNSS antenna and a master base communication system including a master base transmitter;
- and a secondary base station with a secondary base GNSS antenna, a secondary base GNSS receiver coupled to the secondary base GNSS antenna and a secondary base communication system including a secondary base transmitter;
the positioning system including a computer system configured to; calculate a position offset corresponding to an offset between differential corrections created by the master base station and the secondary base station; transmit the position offset to the rover unit as the rover unit transitions from a coverage area for one of the master and secondary base station to a coverage area for the other one of the master and secondary base station; and cause the rover unit to correct a rover GNSS-defined position with the position offset. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- and a secondary base station with a secondary base GNSS antenna, a secondary base GNSS receiver coupled to the secondary base GNSS antenna and a secondary base communication system including a secondary base transmitter;
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8. A method for using a computing device to compute a location of a vehicle, comprising:
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receiving first differential correction data for a master base station; receiving second differential correction data for a secondary base station; identifying a position shift between the first differential correction data and the second differential correction data; sending the position shift to the secondary base station to adjust the second differential correction data; using the position shift to correct a vehicle GNSS-defined position. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A positioning system for computing a location of a rover unit, comprising:
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a computer system configured to; receive first differential corrections from a first base station; receive second differential corrections from a second base station; calculate a position offset between the first differential corrections from the first base station and the second differential corrections from the second base station; send the position offset to the second base station to calibrate the second differential corrections; and use the position offset to correct a vehicle GNSS-defined position. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification