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Spurious draconitic harmonic errors in GPS analyses
Citation
Tregoning, P and Watson, CS, Spurious draconitic harmonic errors in GPS analyses, Geophysical Research Abstracts, 12, (2010) pp. 1. ISSN 1607-7962 (2010) [Non Refereed Article]
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Copyright Statement
Copyright © Author(s) 2010
Official URL: http://www.geophysical-research-abstracts.net/volu...
Abstract
Time series of parameter estimates from GPS analyses (including Earth
orientation parameters, geocentre estimates and coordinate time
series) contain spurious periodic signals at harmonics of the GPS
draconitic year. These harmonic signals are expressions of error in
the GPS analyses and the causes of these errors are not fully
understood. It has been demonstrated that mis-modelling sub-daily
loading signals (for example atmospheric tidal loading deformation),
high multipath as well as failing to resolve ambiguities to integer
values can influence the expression of these spurious signals. The
dominant source of the error however remains unknown, and
the residual periodic error limits the ability of GPS to detect surface
deformations at the mm level. In this poster we describe the problem
and investigate several possible causes pertaining to orbit modelling
of the GPS constellation.
Item Details
Item Type: | Non Refereed Article |
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Keywords: | GPS draconitic, GPS constellation |
Research Division: | Engineering |
Research Group: | Geomatic engineering |
Research Field: | Geospatial information systems and geospatial data modelling |
Objective Division: | Environmental Management |
Objective Group: | Marine systems and management |
Objective Field: | Oceanic processes (excl. in the Antarctic and Southern Ocean) |
UTAS Author: | Watson, CS (Dr Christopher Watson) |
ID Code: | 63688 |
Year Published: | 2010 |
Deposited By: | Geography and Environmental Studies |
Deposited On: | 2010-05-24 |
Last Modified: | 2010-08-16 |
Downloads: | 445 View Download Statistics |
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