In GPS terminology, which method provides corrections during observation via a base station to improve accuracy?

In GPS terminology, which method provides corrections during observation via a base station to improve accuracy?

• A. Real time kinematic differential GPS
• B. Differential correction
• C. Dilation of precision
• D. Post processed kinematic positioning

Answer: (A)

Real-time corrections from a base station are provided when observations are made, because the base station with a precisely known position compares its satellite measurements to this known point, computes the errors, and broadcasts these corrections to the rover as you observe. The rover then applies these live corrections to its own data, yielding much higher accuracy in real time—often at centimeter level. This is different from methods that apply corrections after data collection, where you compute and apply the adjustments in post-processing rather than during the observation. The other terms either refer to processing after the fact or are unrelated concepts, so they don’t describe a real-time, base-station–based correction method.

Real-time corrections from a base station are provided when observations are made, because the base station with a precisely known position compares its satellite measurements to this known point, computes the errors, and broadcasts these corrections to the rover as you observe. The rover then applies these live corrections to its own data, yielding much higher accuracy in real time—often at centimeter level. This is different from methods that apply corrections after data collection, where you compute and apply the adjustments in post-processing rather than during the observation. The other terms either refer to processing after the fact or are unrelated concepts, so they don’t describe a real-time, base-station–based correction method.