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ICESat Elevations in Antarctica Along the 2007–09 Norway–USA Traverse: Validation With Ground-Based GPS.
- Source :
- IEEE Transactions on Geoscience & Remote Sensing; Mar2013 Part 2, Vol. 51 Issue 3, p1578-1587, 10p
- Publication Year :
- 2013
-
Abstract
- The 2007–09 Norway–USA Traverse of East Antarctica collected dual-frequency Global Positioning System (GPS) data at 5-s intervals on two of the traverse vehicles. The traverse covered 2400 km from the coast to the vicinity of the Amundsen-Scott South Pole Station in 2007–08, and a 2600 km route from the South Pole to the coast in 2008–09. Side traverses were also conducted in 2008–09, for a total of over 10 000 km of GPS data between the two vehicles. We use precise point positioning to post-process our single receiver kinematic GPS data. Analysis of data obtained while the vehicles were stationary shows individual solutions are accurate to ca. 1 cm horizontally and 3 cm vertically. We compare our GPS elevations with those determined by the National Aeronautics and Space Administration's Ice, Cloud, and Land Elevation Satellite (ICESat), a space-based altimeter designed to measure ice elevation. ICESat accuracy is evaluated by cross-over analysis; mean differences calculated between dh/dt-corrected ICESat data and GPS-derived surface elevations for two vehicles and two traverse seasons range from -12 to -2 cm, within ICESat's stated goal of \pm15 cm, while 1-\sigma values of the same data imply that ICESat's precision is ca. 15.8 cm. [ABSTRACT FROM PUBLISHER]
- Subjects :
- GLOBAL Positioning System
ICES (Electronic computer system)
Subjects
Details
- Language :
- English
- ISSN :
- 01962892
- Volume :
- 51
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Geoscience & Remote Sensing
- Publication Type :
- Academic Journal
- Accession number :
- 85921463
- Full Text :
- https://doi.org/10.1109/TGRS.2012.2207963