Real-time kinematic integrity estimator and monitor
First Claim
1. A method comprising the steps of:
- computing a position of a first receiver using Global Positioning System (GPS) positioning data from sources chosen according to conditions at a second receiver, said conditions having been specified by data transmitted from said second receiver to said first receiver, and real-time kinematic (RTK) GPS reference data provided by an RTK GPS reference station; and
comparing said computed position with a known position of said first receiver.
3 Assignments
0 Petitions
Accused Products
Abstract
A first receiver computes its position using data from sources chosen according to conditions at a second receiver and reference data. The computed position is compared with a known position. The data may be GPS positioning data from satellites and/or pseudolites and the reference data may be RTK GPS data provided by an RTK GPS reference station. The conditions at the second receiver generally correspond to satellite constellations and other parameters and the position of the first receiver may be computed by configuring the first receiver to mimic the conditions at the second receiver. The comparison of the computed position to the known position may result in an error measurement which may be used to initiate an alert condition. In a further embodiment, a receiver has first circuitry configured to compute its position using data from sources chosen according conditions at a remote receiver and reference data. The receiver may further include second circuitry for comparing the computed position with a known position. The first circuitry may include a GPS engine which is configured to compute the position from GPS data derived from GPS satellites and/or pseudolites. In yet another embodiment, a system includes a first unit and a second unit, the second unit being configured to compute its position using data from sources chosen according to conditions at the first unit and reference data. The system may also include a reference unit configured to provide RTK GPS reference data to the second unit.
83 Citations
34 Claims
-
1. A method comprising the steps of:
-
computing a position of a first receiver using Global Positioning System (GPS) positioning data from sources chosen according to conditions at a second receiver, said conditions having been specified by data transmitted from said second receiver to said first receiver, and real-time kinematic (RTK) GPS reference data provided by an RTK GPS reference station; and comparing said computed position with a known position of said first receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
- 10. A receiver comprising first circuitry configured to compute a position of said receiver using data from sources chosen according to conditions at a remote receiver, said conditions having been specified by data transmitted from said remote receiver to said receiver, and real-time kinematic (RTK) global positioning system (GPS) reference data.
-
20. A system comprising:
-
a first unit configured to transmit data specifying conditions being experienced at said first unit; and a second unit configured to compute a position of said second unit using data from sources chosen according to said conditions at said first unit and real-time kinematic (RTK) global positioning system (GPS) reference data. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
-
Specification