Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1117/1.2929394 |
Analysis of advanced synthetic aperture radar data for geometric accuracy and backscattering signatures over the Kuwait desert | |
Rao, Kota S.; Al Jassar, Hala K. | |
通讯作者 | Rao, Kota S. |
来源期刊 | JOURNAL OF APPLIED REMOTE SENSING
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ISSN | 1931-3195 |
出版年 | 2008 |
卷号 | 2 |
英文摘要 | Seven scenes of ASAR images acquired by ENVISAT satellite during the time period April 2004-June 2005 have been analyzed to assess the geo-coding accuracy of the data. Eighty ground control points (GCPs) spread all over Kuwait were measured using Trimble 5700 GPS which are mainly the road intersections. The same road intersections were identified in the ASAR image and its geo-locations were measured using BEST software package provided by the European Space Agency. The GPS and BEST results were compared to estimate the geo-location accuracy of ASAR data. The average accuracy in geocoding is estimated to be 54 m in both azimuth and range directions. These results are in agreement with the results reported in the literature. Twenty well-defined targets (built-up areas, grass lands, airports, agricultural plots, desert soils, etc.) were considered for the backscattering signature study. The size of each target varies from 50,000 to 100,000 Single Look Complex (SLC) pixels for good statistical accuracy. It has been estimated that the Standard Deviation (Std) of backscatter signature is 1.3% (after speckle filtering) of the mean value. The temporal /spatial variability of the signatures are within the Std. During the study period, the soil moisture varied from 6% to 10% as estimated from AMSR-E on board Acqua satellite. |
英文关键词 | GPS geometric accuracy signatures DEM SAR data analysis field work |
类型 | Article |
语种 | 英语 |
国家 | Kuwait |
收录类别 | SCI-E |
WOS记录号 | WOS:000264046200022 |
WOS关键词 | SURFACE |
WOS类目 | Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology |
WOS研究方向 | Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/157877 |
作者单位 | Kuwait Univ, Dept Phys, Safat 13060, Kuwait |
推荐引用方式 GB/T 7714 | Rao, Kota S.,Al Jassar, Hala K.. Analysis of advanced synthetic aperture radar data for geometric accuracy and backscattering signatures over the Kuwait desert[J],2008,2. |
APA | Rao, Kota S.,&Al Jassar, Hala K..(2008).Analysis of advanced synthetic aperture radar data for geometric accuracy and backscattering signatures over the Kuwait desert.JOURNAL OF APPLIED REMOTE SENSING,2. |
MLA | Rao, Kota S.,et al."Analysis of advanced synthetic aperture radar data for geometric accuracy and backscattering signatures over the Kuwait desert".JOURNAL OF APPLIED REMOTE SENSING 2(2008). |
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