Arid
DOI10.1109/TGRS.2014.2344678
MTSAT-1R Visible Imager Point Spread Correction Function, Part I: The Need for, Validation of, and Calibration With
Doelling, David R.1; Khlopenkov, Konstantin V.2; Okuyama, Arata3; Haney, Conor O.2; Gopalan, Arun2; Scarino, Benjamin R.2; Nordeen, Michele2; Bhatt, Rajendra2; Avey, Lance4
通讯作者Doelling, David R.
来源期刊IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
ISSN0196-2892
EISSN1558-0644
出版年2015
卷号53期号:3页码:1513-1526
英文摘要

The multifunctional transport satellite (MTSAT)-1R imager was launched in 2005 and is operated by the Japan Meteorological Agency (JMA). A nonlinear behavior in the MTSAT-1R visible sensor response is observed when the instrument is intercalibrated with coincident moderate resolution imaging spectroradiometer (MODIS) ray-matched radiances. Analysis reveals that the nonlinear behavior is not a result of imager navigation, sensor spectral response difference, nor scan pattern. Examination of coincident MTSAT-1R and MTSAT-2 images reveals that MTSAT-1R dark ocean radiances are affected by neighboring bright clouds, whereas large regions of dark ocean radiances are not impacted. Although the IR and visible optical paths are shared, the MTSAT-1R brightness temperatures are not affected. A dust contaminant coating the mirror, which only affects certain wavelengths, may be one explanation. To address the nonlinearity, a pixel point spread function (PSF) correction algorithm is implemented, wherein most of the radiance contribution is from the pixel field of view itself, as well as including a small contribution from all pixels within a radii of several hundred kilometers. The application of the PSF-corrected similar to 80% of the affected pixel radiances. After application, a near linear response is observed between the coincident MTSAT-1R and Aqua-MODIS ray-matched radiances, and the intercept is now near the predicted space count of zero. The monthly calibration gain noise is reduced by one-third when compared with the non-PSF-corrected gains. The monthly gains are the most erratic during the first two years of operation, and the MTSAT-1R visible sensor is degrading at similar to 1.9% decade.


英文关键词Geostationary visible imager calibration multifunctional transport satellite (MTSAT)-1R point-spread function (PSF)
类型Article
语种英语
国家USA ; Japan
收录类别SCI-E
WOS记录号WOS:000343900600032
WOS关键词PATHFINDER BENCHMARK PERIOD ; METEOROLOGICAL SATELLITE ; INTER-CALIBRATION ; SOLAR CHANNELS ; TARGETS ; SYSTEM ; DESERT ; GMS-5 ; CERES
WOS类目Geochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向Geochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/187810
作者单位1.NASA, Langley Res Ctr, Climate Sci Branch, Hampton, VA 23681 USA;
2.Sci Syst & Applicat Inc, Hampton, VA 23666 USA;
3.Japan Meteorol Agcy, Meteorol Satellite Ctr, Tokyo 2040012, Japan;
4.Utah Dept Environm Qual, Div Air Qual, Salt Lake City, UT 84114 USA
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GB/T 7714
Doelling, David R.,Khlopenkov, Konstantin V.,Okuyama, Arata,et al. MTSAT-1R Visible Imager Point Spread Correction Function, Part I: The Need for, Validation of, and Calibration With[J],2015,53(3):1513-1526.
APA Doelling, David R..,Khlopenkov, Konstantin V..,Okuyama, Arata.,Haney, Conor O..,Gopalan, Arun.,...&Avey, Lance.(2015).MTSAT-1R Visible Imager Point Spread Correction Function, Part I: The Need for, Validation of, and Calibration With.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,53(3),1513-1526.
MLA Doelling, David R.,et al."MTSAT-1R Visible Imager Point Spread Correction Function, Part I: The Need for, Validation of, and Calibration With".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 53.3(2015):1513-1526.
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