Common-view GPS time transfer accuracy and stability results

Results are reported of time and frequency dissemination research that achieved 10-ns timing accuracy and stability of parts in 10¹⁴ over continental baselines. Global Positioning System (GPS) receiver data were processed by a differential, common-view technique that cancels most of the cardinal errors. The noise in the GPS data was characterized by using multicorner-hat separation-of-variances techniques. These noise values set Kalman smoother parameters for removal of random noise in the common-view data. The disagreement between various satellite measurements provides a measure of common-view GPS accuracy