PT Unknown
AU Angal, A
   Xiong, X
   Choi, T
   Chander, G
   Wu, A
TI Using the Sonoran Desert test site to monitor the long-term radiometric stability of the Landsat TM/ETM+ and Terra MODIS sensors
BT Atmospheric and Environmental Remote Sensing Data Processing and Utilization V-Readiness for GEOSS III
PY 2009
VL Proceedings of SPIE Vol. 7456
LA FY 2009
DE band; bands; bidirectional reflectance; bidirectional reflectance distribution function; BRDF; calibration; characterization; collaboration; conference papers; data; data processing; desert; distribution function; Earth; earth resources; Earth Resources Observation and Science; Enhanced Thematic Mapper Plus; EROS; geometry; impact; instrument; Landsat; Landsat 5; Landsat 7; Moderate Resolution Imaging Spectroradiometer (MODIS); MODIS; monitoring; NASA; National Aeronautics and Space Administration (NASA); pseudo-invariant; radiometric; radiometric calibration; reflectance; remote sensing; resources; sensor; spectral band; temporal; Terra; Terra MODIS; test site; Thematic Mapper (TM); Thematic Mapper/Enhanced Thematic Mapper Plus; TM; TOA; U.S.Geological Survey (USGS); USGS; viewing geometry
AB Pseudo-invariant ground targets have been extensively used to monitor the long-term radiometric calibration stability of remote sensing instruments. The NASA MODIS Characterization Support Team (MCST), in collaboration with members from the U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center, has previously demonstrated the use of pseudo-invariant ground sites for the long-term stability monitoring of Terra MODIS and Landsat 7 ETM+ sensors. This paper focuses on the results derived from observations made over the Sonoran Desert. Additionally, Landsat 5 TM data over the Sonoran Desert site were used to evaluate the temporal stability of this site. Top-ofatmosphere (TOA) reflectances were computed for the closely matched TM, ETM+, and MODIS spectral bands over selected regions of interest. The impacts due to different viewing geometries, or the effect of test site Bi-directional Reflectance Distribution Function (BRDF), are also presented.
PI Bellingham, Wash.
ER