Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL077429 |
Independent DEM of Antarctica Using GNSS-R Data From TechDemoSat-1 | |
Cartwright, Jessica1,2; Clarizia, Maria Paola3,4; Cipollini, Paolo1,5; Banks, Christopher J.6; Srokosz, Meric1 | |
2018-06-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:12页码:6117-6123 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | The first digital elevation model (DEM) of the Antarctic ice sheet derived from Global Navigation Satellite Systems-Reflectometry (GNSS-R) data from the UK TechDemoSat-1 satellite is presented. This is obtained using 32months of data from the mission. This opportunistic and inexpensive method is shown to produce encouraging results from the technology demonstration platform of TechDemoSat-1, with median bias under 18m and root-mean-square difference under 91m when compared to the CryoSat-21-kmDEMv1.0. Discrepancies between the two data sets are explored along with possible causes of such differences and potential improvements to further optimize this technique for future GNSS-R missions. Plain Language Summary Obtaining measurements of the Antarctic ice sheet is critical for understanding the effects that climate change might be having on it and its potential future contribution to rising sea levels. The only practical way to do this is by using satellite data, and this has been done successfully previously from the CryoSat-2 satellite, which carries a radar altimeter. However, due to its orbit, it cannot measure an area near the South Pole. Here we demonstrate that measurements of the Antarctic ice sheet, including the vicinity of the South Pole, can be made by taking advantage of GPS signals that bounce off the ice sheet surface. The data are obtained from the UK's TechDemoSat-1 mission, which carries a simple low-cost receiver to pick up the reflected GPS signals. The results from this demonstration mission (which was not designed to survey ice sheets) are promising, showing the potential of this approach for measuring the ice sheet in the future with a dedicated satellite mission. |
英文关键词 | GNSS-R Antarctic ice shelf altimetry Antarctic DEM TechDemoSat-1 |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000438499100033 |
WOS关键词 | DIGITAL ELEVATION MODEL ; OCEAN ALTIMETRY ; LASER DATA ; ICE ; RADAR ; REFLECTOMETRY ; SIGNALS ; SYSTEM ; INTERFEROMETRY ; SURFACE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28036 |
专题 | 气候变化 |
作者单位 | 1.Natl Oceanog Ctr, Southampton, Hants, England; 2.Univ Southampton, Natl Oceanog Ctr Southampton, Ocean & Earth Sci, Southampton, Hants, England; 3.Univ Southampton, Geog & Environm, Southampton, Hants, England; 4.Deimos Space UK, Harwell Oxford, England; 5.Telespazio VEGA UK Ltd, European Space Agcy, ECSAT, Harwell, Berks, England; 6.Natl Oceanog Ctr, Liverpool, Merseyside, England |
推荐引用方式 GB/T 7714 | Cartwright, Jessica,Clarizia, Maria Paola,Cipollini, Paolo,et al. Independent DEM of Antarctica Using GNSS-R Data From TechDemoSat-1[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(12):6117-6123. |
APA | Cartwright, Jessica,Clarizia, Maria Paola,Cipollini, Paolo,Banks, Christopher J.,&Srokosz, Meric.(2018).Independent DEM of Antarctica Using GNSS-R Data From TechDemoSat-1.GEOPHYSICAL RESEARCH LETTERS,45(12),6117-6123. |
MLA | Cartwright, Jessica,et al."Independent DEM of Antarctica Using GNSS-R Data From TechDemoSat-1".GEOPHYSICAL RESEARCH LETTERS 45.12(2018):6117-6123. |
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