Method and system for determining clock corrections

摘要

A satellite clock error Is determined for each navigation satellite based on the pseudo-range code measurements, the carrier phase measurements, and broadcast satellite clock errors provided by a receiver network (S402). Differences are determined between the computed satellite clock errors and the broadcast clock errors for each satellite (S406). For each constellation, a clock reference satellite Is selected from among the navigation satellites, where the clock reference satellite has the median value of clock error difference for that satellite constellation (S408). A correction is determined for the broadcast clock error by applying a function of the reference satellite's clock error to the broadcast clock error for each satellite in the one or more constellations (S410).