2013, Volume 15, Issue 7
Strategic Study of CAE >> 2013, Volume 15, Issue 7
FY-3A/MWHS data calibration and validation analysis
1. Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, China Meteorological Administration, National Satellite Meteorology Centre, Beijing 100081, China;
2. Center for Space Science and Applied Research Chinese Academy of Sciences, Beijing 100190, China;
3. Satellite Application System Department, CAST, Beijing 100086, China
Next Previous
Abstract
In this paper, the method for FY-3A/MWHS calibration in-orbit has been introduced. Radiometric calibration of FY-3A/MWHS on orbit has been performed based on the T/V test results and surface lab performances test results. It is confirmed that the system of radiometric calibration for MWHS is successful, and performs well on orbit. The variations among space views and warm target views in the interval of scan lines are generally within 20 counts. And the temperature fluctuation of warm target is within 0.5 K in a single pass. Due to the accuracy of the nonlinearity parameters, the radiance calibration of MWHS agrees well with NOAA-17/AMSU-B. The brightness temperature differences between FY-3 MWHS and NOAA-17/AMSU-B at simultaneous cross overpass points are less than 1.5 K. That is the foundation of quantitative application for the data of FY-3A/MWHS in numerical weather prediction(NWP). The method of calibration and validation for FY-3A/MWHS will be a good demo for the other passive microwave sounder in the future.
Figures
图1
图2
图3
图4
图5
References
[ 1 ] 杨 军，董超华. 新一代风云极轨气象卫星业务产品及应用 [M]. 北京：科学出版社，2011.
[ 2 ] 张升伟，李 靖，姜景山，等. 风云3号卫星微波湿度计的系统 设计与研制[J]. 遥感学报，2008，12（2）：199-207. link1
[ 3 ] JPL. 2000，Airs project algorithm theoretical basis document part 3：Microwave instruments，JPL D-17005，Version 2.1 [R]. 2000.
[ 4 ] Saunders R W，Hewison T J. The radiometric characterization of AMSU-B [J]. IEEE Transaction on Microwave Theory and Techniques，1995，43（4）：760-771. link1
[ 5 ] Raunders R W. Results of AMSU-B radiometric characterisation tests [R]. Met O（RSI）Branch Memorandum，No.18，1995.
[ 6 ] NOAA KLM User’s Guide（Satellite and data description of NOAA’s polar orbiting satellites from NOAA- 15 and later）[G]. February 2009 Revision.
[ 7 ] Raunders R W，Hewison T J，Atkinson N C，et al. The Radiometric test results for the AMSU-B EM [R]. Met O（RSI）Branch Memorandum，No.14，1993.
[ 8 ] Tsan Mo. Calibration of the advanced microwave sounding unitA radiometers for NOAA- N and NOAA- N’[R]. NOAA Tech Rep NESDIS 106，2002.
[ 9 ] Tsan Mo. Calibration of the advanced microwave sounding unitA for NOAA-K [R]. NOAA Tech Rep NESDIS 85，1995.
[10] Tsan Mo. NOAA- L and NOAA- M AMSU- A antenna pattern corrections [R]. NOAA Tech Rep NESDIS 98，2000.
[11] 谷松岩，王振占，李 靖，等. 风云三号A星微波湿度计主探测 通道辐射特性分析[J]. 应用气象学报，2010，21（3）：335-342. link1
京公网安备 11010502051620号
