| 星载微波辐射计交叉定标中陆面目标辐射亮温计算模型 |
| |
| 引用本文： | 杨虎,游然,卢乃锰,邱红,师春香.星载微波辐射计交叉定标中陆面目标辐射亮温计算模型[J].遥感学报,2009,13(6):982-998. |
| |
| 作者姓名： | 杨虎 游然 卢乃锰 邱红 师春香 |
| |
| 作者单位： | 中国气象局,中国遥感卫星辐射测量和定标重点开放实验室,国家卫星气象中心,北京,100081 |
| |
| 基金项目： | 国家自然科学基金(编号: 40601061)。 |
| |
| 摘 要： | 从被动微波辐射计在轨辐射定标的角度出发, 选取亚马逊雨林作为高温地面目标, 利用DMSPF13-SSM/I数据和NCEP数据对研究区19—89GHz辐射特性进行分析。研究发现, 利用辐射亮温稳定的热带雨林作为地面目标, 对19—89GHz的频段, 微波辐射亮温计算精度可以达到1K以内; 对于6和10GHz这样的低频通道, 撒哈拉沙漠是一个可供选择的地面目标, 根据所建立的亮温计算模型, 利用数值预报分析场NCEP数据作为输入, 其亮温计算精度在2K以内。
|
| 关 键 词： | 微波辐射计 定标 辐射量温计算模型 |
| 收稿时间： | 2007/10/29 0:00:00 |
| 修稿时间： | 2008/1/22 0:00:00 |
On-orbit calibration of spaceborne microwaveradiometer by using stable surface target |
| |
| YANG Hu,YOU Ran,LU Nai-meng,QIU Hong and SHI Chun-xiang.On-orbit calibration of spaceborne microwaveradiometer by using stable surface target[J].Journal of Remote Sensing,2009,13(6):982-998. |
| |
| Authors: | YANG Hu YOU Ran LU Nai-meng QIU Hong and SHI Chun-xiang |
| |
| Institution: | Key Lab of Radiometric Calibration and Validation for Environmental Satellites, China Meteorological Administration (LRCVES/CMA) and National Satellite Meteorological Center. Beijing 100081, China;Key Lab of Radiometric Calibration and Validation for Environmental Satellites, China Meteorological Administration (LRCVES/CMA) and National Satellite Meteorological Center. Beijing 100081, China;Key Lab of Radiometric Calibration and Validation for Environmental Satellites, China Meteorological Administration (LRCVES/CMA) and National Satellite Meteorological Center. Beijing 100081, China;Key Lab of Radiometric Calibration and Validation for Environmental Satellites, China Meteorological Administration (LRCVES/CMA) and National Satellite Meteorological Center. Beijing 100081, China;Key Lab of Radiometric Calibration and Validation for Environmental Satellites, China Meteorological Administration (LRCVES/CMA) and National Satellite Meteorological Center. Beijing 100081, China |
| |
| Abstract: | Accurate calibration is needed for Quantitative application of space-borne passive microwave radiometers. In this paper, the surface target which can be taken as the calibration reference target are studied, and the emission model was developed for the emissivity computation for these targets. It is found that in dense covered forest area, for 19-89GHz frequencies, microwave radiation brightness temperature can be calculated with an accuracy of 1K. For the frequency channel as low as 6 and 10 GHz, the desert area such as sahara can be taken as reference calibration target. And the established model accuracy in desert area is within 2K by using the NCEP reanalysis dataset as input. |
| |
| Keywords: | microwave radiometer calibration model ground target |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《遥感学报》浏览原始摘要信息 |
| 点击此处可从《遥感学报》下载免费的PDF全文 |
|
