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US 10,761,216 B2Granted
Multiple epoch GNSS carrier phase integer resolution
AssigneeThe Regents of the University of California
InventorsYiming Chen, Sheng Zhao, Jay A. Farrell
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Abstract
Various embodiments each include systems, methods, devices, or software for integer ambiguity resolution approach over a time window of GNSS/IMU data. One purpose of processing a window of data is to enhance the reliability of obtaining high-accuracy position estimation, using carrier-phase measurements, even in challenging environments.
Claims14
A system to reduce computational complexity of integer ambiguity resolution, the system comprising:
- a differential global navigation satellite system (DGNSS) to provide a plurality of carrier-phase measurements and a plurality of code measurements;
- an inertial measurement unit (IMU), the IMU to provide a plurality of IMU measurements;
- and
- a processor configured to:
- determine a float solution based on the plurality of carrier-phase measurements, the plurality of code measurements, and the plurality of IMU measurements;
- and
- determine a common position shift (CPS) vector based on the float solution, a plurality of code measurements, and a plurality of carrier-phase measurements.
4 more elements
A method to reduce computational complexity of integer ambiguity resolution, the method comprising:
- receiving a plurality of differential global navigation satellite system (DGNSS) carrier-phase measurements, a plurality of DGNSS code measurements, and a plurality of inertial measurement unit (IMU) measurements;
- determining a float solution based on the plurality of code measurements, the plurality of carrier-phase measurements, and the plurality of IMU measurements;
- and
- determining a common position shift (CPS) vector based on the float solution, a plurality of code measurements, and a plurality of carrier-phase measurements.
1 more element
Dependencies are inferred from the claim text.