(GPS terminology)

The process of determining the relative difference in position between two marks This can be done with a much greater precision than absolute, single point positioning. A receiver (antenna) is placed over each spot and measurements are made by observing the same satellites with each receiver at exactly the same observation interval and with overlapping times . This technique allows the cancellation (during computations) of all errors that are common to both receivers. These include satellite clock errors, propagation delays, etc.

Log in or registerto write something here or to contact authors.