Calibration Analyses for Sounding Channels of MWHS Onboard FY-3A
文献类型：期刊论文
| 作者 | Gu, Songyan; Guo, Yang; Wang, Zhenzhan; Lu, Naimeng |
| 刊名 | IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
 |
| 出版日期 | 2012 |
| 卷号 | 50期号:12页码:4885-4891 |
| 关键词 | Calibration cross comparison FY-3A MWHS |
| ISSN号 | 0196-2892 |
| 通讯作者 | Gu, SY (reprint author), China Meteorol Adm, Key Lab Radiometr Calibrat & Validat Environm Sat, Beijing 100081, Peoples R China. |
| 中文摘要 | The Microwave Humidity Sounder (MWHS) is a five-channel microwave radiometer in the range of 150-191 GHz onboard FengYun 3 (FY-3). Before the launch of FY-3A, the intensive thermal vacuum (TVAC) tests for MWHS had been carried out in a 2-m TVAC chamber, and the basic parameters such as receiver nonlinearity were obtained. Four-year operation shows that the performance of FY-3A MWHS remains stabile. The variations among space views and warm target views in the interval of scan lines were generally within 20 counts. In addition, the temperature fluctuation of the warm target in a single pass is within 0.5 K. Primarily, due to the nonlinearity correction obtained from the TVAC test, radiance measurements of MWHS agree well with NOAA-17 AMSU-B and NOAA-18 Microwave Humidity Sounder (MHS) data. Averaged brightness temperature differences between FY-3 MWHS and NOAA-17 AMSU-B, at simultaneous cross-overpass points, are less than 1.08 K for the channels at 183 +/- 1 GHz. In the observation-minus-background comparison, the observed and simulated brightness temperature biases of FY-3 MWHS and NOAA-18 MHS exhibit similar performance in the 183.31 +/- 1 GHz channel; but in the 183.31 +/- 7 GHz channel, MWHS agrees better with background. It is anticipated that FY-3 MWHS data will contribute to numerical weather prediction. |
| 英文摘要 | The Microwave Humidity Sounder (MWHS) is a five-channel microwave radiometer in the range of 150-191 GHz onboard FengYun 3 (FY-3). Before the launch of FY-3A, the intensive thermal vacuum (TVAC) tests for MWHS had been carried out in a 2-m TVAC chamber, and the basic parameters such as receiver nonlinearity were obtained. Four-year operation shows that the performance of FY-3A MWHS remains stabile. The variations among space views and warm target views in the interval of scan lines were generally within 20 counts. In addition, the temperature fluctuation of the warm target in a single pass is within 0.5 K. Primarily, due to the nonlinearity correction obtained from the TVAC test, radiance measurements of MWHS agree well with NOAA-17 AMSU-B and NOAA-18 Microwave Humidity Sounder (MHS) data. Averaged brightness temperature differences between FY-3 MWHS and NOAA-17 AMSU-B, at simultaneous cross-overpass points, are less than 1.08 K for the channels at 183 +/- 1 GHz. In the observation-minus-background comparison, the observed and simulated brightness temperature biases of FY-3 MWHS and NOAA-18 MHS exhibit similar performance in the 183.31 +/- 1 GHz channel; but in the 183.31 +/- 7 GHz channel, MWHS agrees better with background. It is anticipated that FY-3 MWHS data will contribute to numerical weather prediction. |
| 学科主题 | 微波遥感 |
| 收录类别 | SCI ; EI |
| 资助信息 | Chinese Ministry of Science and Technology [2010CB951600]; Chinese 863 Program [2007AA12Z115] |
| 语种 | 英语 |
| 公开日期 | 2014-12-15 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/3460]  |
| 专题 | 国家空间科学中心_微波遥感部 |
| 推荐引用方式 GB/T 7714 | Gu, Songyan,Guo, Yang,Wang, Zhenzhan,et al. Calibration Analyses for Sounding Channels of MWHS Onboard FY-3A[J]. IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,2012,50(12):4885-4891. |
| APA | Gu, Songyan,Guo, Yang,Wang, Zhenzhan,&Lu, Naimeng.(2012).Calibration Analyses for Sounding Channels of MWHS Onboard FY-3A.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,50(12),4885-4891. |
| MLA | Gu, Songyan,et al."Calibration Analyses for Sounding Channels of MWHS Onboard FY-3A".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 50.12(2012):4885-4891. |
入库方式： OAI收割
来源：国家空间科学中心
浏览0
下载0
收藏0
其他版本
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。