Thirty-six combined years of MODIS geolocation trending

被引：10

作者：

Lin, Guoqing ^{[1
,2
]}

Wolfe, Robert E. ^{[2
]}

Zhang, Ping ^{[1
,2
]}

Tilton, James C. ^{[2
]}

Dellomo, John J. ^{[2
,3
]}

Tan, Bin ^{[1
,2
]}

机构：

[1] Sci Syst & Applicat Inc, 10210 Greenbelt Rd, Lanham, MD 20706 USA

[2] NASA Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA

[3] Global Sci & Technol Inc, 7855 Walker Dr, Greenbelt, MD 20770 USA

来源：

EARTH OBSERVING SYSTEMS XXIV | 2019年 / 11127卷

关键词：

MODIS; Terra; Aqua; geolocation; ground control point; error analysis; scan-to-scan underlaps; focal length;

D O I：

10.1117/12.2529447

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Two Moderate Resolution Imaging Spectroradiometer (MODIS) sensors have been in operations for more than 19 and 17 years (thus 36 combined years) as part of NASA's Earth Observing System (EOS) on the Terra platform that was launched in December 1999 and on the Aqua platform that was launched in May 2002, respectively. Accurate geolocation is a critical element needed for accurate retrieval of global biogeophysical parameters. In this paper, we describe the latest trends in the continuously improved MODIS geolocation accuracy in Collection-5 (C5), C6 and C6.1 re-processing and forward-processing data streams. We improved geolocation accuracy in the re-processed data and corrected for geolocation biases found in forward-processed data, including those caused by operations such as the stop-go-stop status of the Advanced Microwave Scanning Radiometer for EOS (AMSR-E) instrument on the Aqua platform. We discuss scan-to-scan underlaps near nadir over the equator regions that was discovered in checking the non-underlapping requirement in the Visible Infrared Imaging Radiometer Suite (VIIRS) based on trending parameters from the actual Suomi National Polar-orbiting Partnership (S-NPP) satellite orbit. The underlaps are closely tied to instrument effective focal length that is measured from on-orbit data using a technique we recently developed. We also discuss potential improvements for the upcoming C7 re-processing.

引用

页数：12

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