So in order to remove the error, all you need is a GPS receiver in a known location to measure the current deviation and a way to transmit correction information to other units. DGPS does just ...

The Kenaz® DGPS receiver is a high-accuracy GPS accessory that provides sub-meter positional performance for handheld mapping. The Kenaz DGPS receiver has been specifically developed for the ...

Hemisphere GPS brings innovative technology to the XF101 DGPS receiver. Position accuracy and stability are optimized by their exclusive Crescent® Receiver Technology for sub-meter accuracy. COAST™ ...

The USCG's DGPS system is designed to provide navigation ... Trimble was awarded a contract with the USCG to provide 326 NT200CG GPS receivers for use in the USCG's Aids to Navigation (ATON ...

Also called a "differential GPS" (DGPS), an augmentation system compensates for those discrepancies by transmitting corrections to the GPS receivers either via satellite or terrestrial radio.