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Articles

Volume 8, Number 2 (2007)

GPS Techniques in Tidal Modelling

Submitted
August 13, 2013
Published
2007-06-06

Abstract

With advances in processing techniques, and the associated improvement in positioning accuracies, it is apparent that deriving estimates of water level from GPS height observations is becoming accepted as a viable alternative to traditional tidal solutions. This paper outlines GPS techniques providing high-accuracy solutions that are of potential use in tidal modelling, describes a trial of alternative GPS systems, and presents data examples from actual survey projects. Within the discussion the concept of accuracy versus precision is defined, with special emphasis on the problem of vertical datums.