Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016JD025812 |
Improved scheme for Cross-track Infrared Sounder geolocation assessment and optimization | |
Wang, Likun1; Zhang, Bin2; Tremblay, Denis3; Han, Yong4 | |
2017 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | An improved scheme for Cross-track Infrared Sounder (CrIS) geolocation assessment for all scan angles (from -48.5 degrees to 48.5 degrees) is developed in this study. The method uses spatially collocated radiance measurements from the Visible Infrared Imaging Radiometer Suite (VIIRS) image band I5 to evaluate the geolocation performance of the CrIS Sensor Data Records (SDR) by taking advantage of its high spatial resolution (375 m at nadir) and accurate geolocation. The basic idea is to perturb CrIS line-of-sight vectors along the in-track and cross-track directions to find a position where CrIS and VIIRS data matches more closely. The perturbation angles at this best matched position are then used to evaluate the CrIS geolocation accuracy. More importantly, the new method is capable of performing postlaunch on-orbit geometric calibration by optimizing mapping angle parameters based on the assessment results and thus can be further extended to the following CrIS sensors on new satellites. Finally, the proposed method is employed to evaluate the CrIS geolocation accuracy on current Suomi National Polar-orbiting Partnership satellite. The error characteristics are revealed along the scan positions in the in-track and cross-track directions. It is found that there are relatively large errors (similar to 4 km) in the cross-track direction close to the end of scan positions. With newly updated mapping angles, the geolocation accuracy is greatly improved for all scan positions (less than 0.3 km). This makes CrIS and VIIRS spatially align together and thus benefits the application that needs combination of CrIS and VIIRS measurements and products. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000393877800029 |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/32566 |
专题 | 气候变化 |
作者单位 | 1.Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20742 USA; 2.Earth Resource Technol Inc, Laurel, MD USA; 3.Sci Data Proc Inc, Laurel, MD USA; 4.NOAA, NESDIS, Ctr Satellite Applicat & Res, College Pk, MD USA |
推荐引用方式 GB/T 7714 | Wang, Likun,Zhang, Bin,Tremblay, Denis,et al. Improved scheme for Cross-track Infrared Sounder geolocation assessment and optimization[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(1). |
APA | Wang, Likun,Zhang, Bin,Tremblay, Denis,&Han, Yong.(2017).Improved scheme for Cross-track Infrared Sounder geolocation assessment and optimization.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(1). |
MLA | Wang, Likun,et al."Improved scheme for Cross-track Infrared Sounder geolocation assessment and optimization".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.1(2017). |
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