Dynamic station coordinates approach to improve network/field performance
Stephen Blatt & Juan Erencia-Guerrero
Presented by Paul Drummond.
Accurate reference position information is essential in Network-RTK positioning to be able to generate reliable correction data. The principle of Network-RTK is that a significant portion of ionospheric, tropospheric and ephemeris errors are estimated over a region and this information is provided to Rovers in the field. The influence of the ionosphere is mostly reflected in a biased 2D position, whereupon the troposphere mainly influences the height component of a position. Incorrect reference position information therefore results in biased ionospheric and tropospheric estimations, which finally have a negative input on the Rover position performance in the field. Rapid movements such as earthquakes or constant position offsets found in local networks are error sources for incorrect position information. This paper presents a solution offered in Trimble Pivot Platform (TPP) to avoid the influence of biased position information during Network-RTK positioning.
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