Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1117/12.2061098 |
Status of Time-dependent Response versus scan-angle (RVS) for Terra and Aqua MODIS Reflective Solar Bands | |
Geng, Xu; Angal, Amit; Sun, Junqiang; Chen, Hongda; Wu, Aisheng; Li, Yonghong; Link, Daniel; Xiong, Xiaoxiong | |
通讯作者 | Geng, Xu |
会议名称 | Conference on Earth Observing Systems XIX |
会议日期 | AUG 18-20, 2014 |
会议地点 | San Diego, CA |
英文摘要 | The MODerate resolution Imaging Spectroradiometer (MODIS) has 20 reflective solar bands (RSB), which are calibrated using a solar diffuser (SD) and near-monthly scheduled lunar observations via a space view (SV) port. The sensor responses observed at two different angles of incidence (AOI) from the SD and lunar measurements are used to track the on-orbit RSB gain changes as well as the response versus scan-angle (RVS) changes. The MODIS RSB have experienced wavelength dependent degradation since launch with the larger degradation observed at the shorter wavelengths. In addition to the SD and lunar observations, the MODIS Characterization Support Team (MCST) regularly monitors the response trending at multiple AOI over selected desert sites. In Collection 6 (C6), a new algorithm using the EV measurements from pseudoinvariant desert sites was developed to better characterize the MODIS scan-angle dependence and it led to a significant improvement in the long-term calibration consistency of the MODIS Level 1B (L1B) products. This approach is formulated for all RSB, and its application was recently extended to Terra band 10, leading to a significant improvement in the ocean-color products. This paper discusses the current status and performance of the on-orbit RVS characterization as applied in C6. Also, the various challenges and future improvement strategies associated with trending the EV response for the high-gain ocean bands are discussed. |
英文关键词 | MODIS Terra Aqua Reflective solar bands Response versus scan-angle |
来源出版物 | EARTH OBSERVING SYSTEMS XIX |
ISSN | 0277-786X |
出版年 | 2014 |
卷号 | 9218 |
EISBN | 978-1-62841-245-1 |
出版者 | SPIE-INT SOC OPTICAL ENGINEERING |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | USA |
收录类别 | CPCI-S |
WOS记录号 | WOS:000348319500051 |
WOS关键词 | CALIBRATION |
WOS类目 | Remote Sensing ; Optics |
WOS研究方向 | Remote Sensing ; Optics |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/302998 |
作者单位 | Sigma Space Corp, 4601 Forbes Blvd, Lanham, MD 20706 USA |
推荐引用方式 GB/T 7714 | Geng, Xu,Angal, Amit,Sun, Junqiang,et al. Status of Time-dependent Response versus scan-angle (RVS) for Terra and Aqua MODIS Reflective Solar Bands[C]:SPIE-INT SOC OPTICAL ENGINEERING,2014. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。