Differential correction can be post-processed or achieved in real-time. In most cases, real-time correction is acquired from a differential correction provider who computes timing errors and transmits the differential correction to GPS receivers in the local area.
A commercial vendor that provides wide-area differential GPS service, using satellite broadcast techniques. Pricing, service and contact information.
U.S. Coast Guard Navigation Center
Maintained for the purpose of disseminating navigational status information for the GPS, DGPS, and LORAN radio navigation systems. Coverage plot map, DGPS status, discusses nationwide expansion, outages, and general information relevant to precision agriculture.
Last update:June 24, 2015 at 11:54:06 UTC