How long must we wait? The duration of GPS observations for short baseline measurements

Document Type

Article

Publication Date

6-1-2003

Abstract

The Global Positioning System (GPS) is becoming a dominant surveying tool. Therefore, it is prudent to evaluate GPS capabilities in terms of accuracy vs. observation methods, and duration of observation sessions as they apply to typical surveying projects. This paper presents the findings of such an evaluation. The durations of observation sessions using Static and Rapid Static methods with dual- and single-frequency receivers were investigated. In addition, the accuracy of Real-Time Kinematic (RTK) with dual-frequency receivers was evaluated. It was found that under normal conditions and with GDOP of less than 3.5, as few as 2 minute (dual-frequency) and 10 minute (single-frequency) observation sessions may be adequate to measure short baselines with an accuracy of ± 3 mm (0.01 ft.).

Identifier

1942516404 (Scopus)

Publication Title

Surveying and Land Information Science

ISSN

15381242

First Page

77

Last Page

86

Issue

2

Volume

63

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