A processing strategy for the application of the GPS in networks

Abstract

Cover: Polyhedron consisting of the between-receiver single differences formed at one epoch between 14 receivers. The WCS-84 ellipsoid is visualized by depicting some of its meridians and parallels.

Troposphere Modeling and Filtering for Precise GPS Leveling

“…Undifferenced observation models and the presence of several rank deficiencies in these models were earlier shown in [De Jonge, 1998]. The systematics in deriving rank deficiencies in the troposphere-fixed model and the derivation of partial design matrices is by the author in cooperation with Odijk (2002).…”

“…[ De Jonge, 1998]: The a-priori correction term may include corrections for the satellite clock, phase center variations, tropospheric and ionospheric delay, phase wind-up, ocean tide loading, and solid earth tides. Unmodeled errors like multipath may occur in the term dm s r,l (t).…”

“…Evaluation in receiver time gives rise to several more terms in the linearization of the observation equations. For a more elaborate discussion, see [De Jonge, 1998].…”

“…Special attention is given to the inclusion of troposphere parameters. An extensive description of (undifferenced) observation equations without troposphere parameters is given in [De Jonge, 1998]. This part starts with a review.…”

“…This part starts with a review. Like in [De Jonge, 1998], we distinguish global parameters, which are constant for some time span, and temporal parameters, which change every epoch.…”