Centimeter accurate global positioning system receiver for on-the-fly real-time kinematic measurement and control
First Claim
1. A system, comprising:
- an on-the-fly real-time kinematic (OTF-RTK) global positioning system (GPS) reference station configured to provide RTK GPS data at a first rate; and
a rover station configured to receive the RTK GPS data and to update its own position at a second rate faster than the first rate.
2 Assignments
0 Petitions
Accused Products
Abstract
A system embodiment of the present invention comprises a fixed and a roving pair of four-observable GPS receivers and a communication link between them for double differencing code and carrier measurements. Carrier phase integer ambiguities are resolved efficiently by searching the simultaneous narrow-lane intersections of both the L1 and L2 wave fronts propagated by the GPS satellites being tracked. External constraint information, such as elevation, is additionally used to speed up integer ambiguity resolution. Data between the reference station and the rover is communicated in compressed form at a regular interval, e.g., once a second at each epoch, and demi-measurements of carrier phase are obtained more frequently, e.g., ten times a second, and used to propagate solutions between epochs.
-
Citations
8 Claims
-
1. A system, comprising:
-
an on-the-fly real-time kinematic (OTF-RTK) global positioning system (GPS) reference station configured to provide RTK GPS data at a first rate; and a rover station configured to receive the RTK GPS data and to update its own position at a second rate faster than the first rate. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A method, comprising:
-
providing on-the-fly real-time kinematic (OTF-RTK) global positioning system (GPS) data to a rover station at a first rate; and updating the position of said rover station at a second rate faster than the first rate. - View Dependent Claims (7, 8)
-
Specification