Patent ID: 7982667
Filing Date: 2011-07-19
Classification: G01S

Abstract:
1. A method of predicting post-processed accuracy of observations collected at a rover over multiple epochs from signals of GNSS satellites, comprising: a. obtaining observations collected at the rover for a current epoch, b. obtaining a current-epoch satellite position for each satellite, c. obtaining an approximate current-epoch rover position, d. obtaining a current-epoch error models, e. determining a current-epoch error estimate from the current epoch error models and the approximate current-epoch rover position and the current-epoch satellite positions and a prior-epoch error estimate, the current-epoch error estimate representing an estimated rover position error to be expected upon subsequent differential post-processing of the observations of the plurality of epochs with reference data of a corresponding plurality of epochs, and f. providing the current-epoch error estimate for use in determining whether observations of further epochs are needed to obtain a desired rover position error upon said subsequent differential post-processing.