Paper Info
Title
Preliminary radiometric calibration assessment of ALOS AVNIR-2.
Abstract
This paper summarizes the activities carried out in the frame of the data quality activities of the Advanced Visible and Near Infrared Radiometer type 2 (AVNIR-2) sensor onboard the Advanced Land Observing Satellite (ALOS). Assessment of the radiometric calibration of the AVNIR-2 multi-spectral imager is achieved via three intercomparisons to currently flying sensors over the Libyan desert, during the first year of operation. All three methodologies indicate a slight underestimation of AVNIR-2 in band I by 4 to 7 % with respect to other sensors radiometric scale. Band 2 does not show any obvious bias. Results for band 3 are affected by saturation due to inappropriate gain setting. Two methodologies indicate no significant bias in band 4. Preliminary results indicate possible degradations of the AVNIR-2 channels, which, when modeled as an exponentially decreasing functions, have time constants of respectively 13.2 %.year(-1), 8.8 %.year(-1) and 0.1 %.year(-1) in band 1, 2 and 4 (with respect to the radiometric scale of the NlEdium Resolution Imaging Spectrometer, MERIS). Longer time series of AVNIR-2 data are needed to draw final conclusions.
Year
DOI
Venue
2007
10.1109/IGARSS.2007.4423393
IGARSS
Keywords
Field
DocType
calibration,geophysical equipment,radiometers,time series,ALOS AVNIR-2,Advanced Land Observing Satellite,Libyan desert,MERIS,MEdium Resolution Imaging Spectrometer,data quality,radiometric calibration assessment,time series,ALOS,AVNIR-2,L5 TM,MERIS,MODIS,POLDER-3,calibration,intercomparison
Radiometric dating,Meteorology,Radiometric calibration,Imaging spectrometer,Satellite,Data quality,Computer science,Near-infrared spectroscopy,Remote sensing,Calibration,Radiometer
Conference
ISSN
Citations 
PageRank 
2153-6996
2
0.60
References 
Authors
1
5
Name
Order
Citations
PageRank
Marc Bouvet161.81
Philippe Goryl2113.02
Gyanesh Chander321859.31
Richard Santer481.97
Sebastien Saunier592.52