Achieving sub-pixel geolocation accuracy in support of MODIS land science

被引：457
作者：
Wolfe, RE
Nishihama, M
Fleig, AJ
Kuyper, JA
Roy, DP
Storey, JC
Patt, FS
机构：
[1] NASA, Goddard Space Flight Ctr, Terr Phys Lab, Greenbelt, MD 20771 USA
[2] SAIC GSC, Beltsville, MD 20705 USA
[3] NASA, Goddard Space Flight Ctr, Lab Hydrospher Proc, Greenbelt, MD 20771 USA
[4] US Geol Survey, EROS Data Ctr, Sioux Falls, SD 57198 USA
[5] Univ Maryland, Dept Geog, College Pk, MD 20742 USA
[6] SAIC GSC, Seabrook, MD 20706 USA
[7] PITA Analyt Sci, Bethesda, MD 20817 USA
[8] Raytheon Co, ITSS, Lanham, MD 20706 USA
来源：
REMOTE SENSING OF ENVIRONMENT | 2002年 / 83卷 / 1-2期
基金：
美国国家航空航天局;
关键词：
D O I：
10.1016/S0034-4257(02)00085-8
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The Moderate Resolution Imaging Spectroradiometer (MODIS) was launched in December 1999 on the polar orbiting Terra spacecraft and since February 2000 has been acquiring daily global data in 36 spectral bands-29 with 1 km, five with 500 m, and two with 250 m nadir pixel dimensions. The Terra satellite has on-board exterior orientation (position and attitude) measurement systems designed to enable geolocation of MODIS data to approximately 150 m (1 Q) at nadir. A global network of ground control points is being used to determine biases and trends in the sensor orientation. Biases have been removed by updating models of the spacecraft and instrument orientation in the MODIS geolocation software several times since launch and have improved the MODIS geolocation to approximately 50 m (1sigma) at nadir. This paper overviews the geolocation approach, summarizes the first year of geolocation analysis, and overviews future work. The approach allows an operational characterization of the MODIS geolocation errors and enables individual MODIS observations to be geolocated to the sub-pixel accuracies required for terrestrial global change applications. (C) 2002 Elsevier Science Inc. All rights reserved.
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页码：31 / 49
页数：19
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