Loading patent…
AssigneeTRIMBLE NAVIGATION LIMITED, a corporation of California
InventorsJunjie Liu, Ulrich Vollath, Peter Ian West, Soeren Ulf Klose
Estimating the term…
Methods and apparatus for processing of data from GNSS receivers are presented. A post-processing engine and a post-processed accuracy predictor are described. The post-processing engine provides high accuracy GNSS (GPS) position determination with short occupation time for GIS applications. The post-processed accuracy predictor calculates during data collection an estimate of the accuracy likely to be achieved after post-processing. This helps to optimize productivity when collecting GNSS data for which post-processed accuracy is important. The predictor examines the quality of carrier measurements and estimates how well the post-processed float solution will converge in the time since carrier lock was obtained.
A method of preparing GNSS reference data for processing data acquired by a GNSS receiver at times corresponding to first intervals, comprising:
The method of 25, wherein the backward estimate and the forward estimate are prepared with GNSS receiver data collected over a period substantially longer than a feature-occupation time.
The method of 25, further comprising combining the backward estimate and the forward estimate to produced a smoothed position estimate.
Apparatus for preparing GNSS reference data for processing data acquired by a GNSS receiver at times corresponding to first intervals, comprising:
Dependencies are inferred from the claim text.