Single Frequency RTK Technology for Handheld GPS


Traditional GPS RTK system requires at least two receivers one of which serves as base station with known coordinates. Assuming separation between base and rover receivers is not too long, for example 10 km, spatial correlations for GPS observation errors are pretty significant. Base station can be used to correct rover observations. As a result, 2 cm horizontal and 5 cm vertical positioning accuracy within less than 5 minutes initialization time is available at rover.