Knowledge Resource Center for Ecological Environment in Arid Area
Radiometric Inter-calibration of Microwave Imagers over Homogeneous Warm Scene Targets | |
Datta, Saswati1; Jones, W. Linwood2 | |
通讯作者 | Datta, Saswati |
会议名称 | 15th IEEE Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad) |
会议日期 | MAR 27-30, 2018 |
会议地点 | Cambridge, MA |
英文摘要 | Conventional satellite intercalibration for microwave imaging radiometers involves a linear two-point calibration approach, over cold ocean scenes and warm ends of the scene brightness temperatures, traditionally over tropical rain forest. Unfortunately, this approach ignores the possibility of non-linear radiometer transfer function, which is often important. This paper discusses a new tool developed to identify large-scale homogeneous desert scenes as possible third calibration targets with brightness temperatures that fall between the conventional cold and warm earth scenes. Previously a procedure was developed over continental Australia using 10, 18 and 37 GHz Vertical and Horizontal polarized brightness temperatures from GPM Microwave Imager (GMI) data. This paper focus on extending this tool to global scale and including 89 GHz channel in the analysis. Further, by applying the mask, we examine intercalibration results over selected desert targets using GMI-TMI and GMI-AMSR-2 match-ups. Initial results indicate a scene temperature dependence of calibration factor particularly for horizontally polarized channels. |
英文关键词 | Calibration Land Emissivity Polarization effect Temperature Dependence |
来源出版物 | 2018 IEEE 15TH SPECIALIST MEETING ON MICROWAVE RADIOMETRY AND REMOTE SENSING OF THE ENVIRONMENT (MICRORAD) |
出版年 | 2018 |
页码 | 154-157 |
EISBN | 978-1-5386-5015-8 |
出版者 | IEEE |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | USA |
收录类别 | CPCI-S |
WOS记录号 | WOS:000449522800033 |
WOS关键词 | RETRIEVAL |
WOS类目 | Engineering, Electrical & Electronic ; Remote Sensing |
WOS研究方向 | Engineering ; Remote Sensing |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/306928 |
作者单位 | 1.Data & Image Proc Consultants, Morrisville, NC 27560 USA; 2.Univ Cent Florida, Orlando, FL 32816 USA |
推荐引用方式 GB/T 7714 | Datta, Saswati,Jones, W. Linwood. Radiometric Inter-calibration of Microwave Imagers over Homogeneous Warm Scene Targets[C]:IEEE,2018:154-157. |
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