The use of a base station or other earth-bound source to transmit a correction signal to a GPS receiver refers to
A)CORS.
B)DGPS.
C)WAAS.
D)MSAS.

Question

Quizplus · Accepted Answer

This refers to Differential GPS (DGPS) which is a technique that uses a base station located on the ground to transmit a correction signal to a GPS receiver to improve its accuracy. CORS (Continuously Operating Reference Stations), WAAS (Wide Area Augmentation System), and MSAS (Multi-functional Satellite Augmentation System) are also methods of improving GPS accuracy, but they do not involve transmitting correction signals from an earth-bound source to a GPS receiver.

The Use of a Base Station or Other Earth-Bound Source