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An Overview of AVIRIS-NG Airborne Hyperspectral Science Campaign Over India


Affiliations
1 Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
2 Jet Propulsion Laboratory, California Institute of Technology, CA 91109, India
3 National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 625, India
4 Earth Observation Science Directorate, Indian Space Research Organisation, Bengaluru 560 231, India
 

The first phase of an airborne science campaign has been carried out with the Airborne Visible/Infrared Imaging Spectrometer Next Generation (AVIRIS-NG) imaging spectrometer over 22,840 sq. km across 57 sites in India during 84 days from 16 December 2015 to 6 March 2016. This campaign was organized under the Indian Space Research Organisation (ISRO) and National Aeronautics and Space Administration (NASA) joint initiative for HYperSpectral Imaging (HYSI) programme. To support the campaign, synchronous field campaigns and ground measurements were also carried out over these sites spanning themes related to crop, soil, forest, geology, coastal, ocean, river water, snow, urban, etc. AVIRIS-NG measures the spectral range from 380 to 2510 nm at 5 nm sampling with a ground sampling distance ranging from 4 to 8 m and flight altitude of 4–8 km. On-board and ground-based calibration and processing were carried out to generate level 0 (L0) and level 1 (L1) products respectively. An atmospheric correction scheme has been developed to convert the measured radiances to surface reflectance (level 2). These spectroscopic signatures are intended to discriminate surface types and retrieve physical and compositional parameters for the study of terrestrial, aquatic and atmospheric properties. The results from this campaign will support a range of objectives, including demonstration of advanced applications for societal benefits, validation of models/techniques, development of state-of-the-art spectral libraries, testing and refinement of automated tools for users, and definition of requirements for future space-based missions that can provide this class of measurements routinely for a range of important applications.

Keywords

Airborne Science Campaign, Hyperspectral Sensing, Imaging Spectrometer, Surface Reflectance.
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  • An Overview of AVIRIS-NG Airborne Hyperspectral Science Campaign Over India

Abstract Views: 441  |  PDF Views: 136

Authors

Bimal K. Bhattacharya
Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
Robert O. Green
Jet Propulsion Laboratory, California Institute of Technology, CA 91109, India
Sadasiva Rao
National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 625, India
M. Saxena
Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
Shweta Sharma
Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
K. Ajay Kumar
Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
P. Srinivasulu
National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad 500 625, India
Shashikant Sharma
Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
D. Dhar
Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
S. Bandyopadhyay
Earth Observation Science Directorate, Indian Space Research Organisation, Bengaluru 560 231, India
Shantanu Bhatwadekar
Earth Observation Science Directorate, Indian Space Research Organisation, Bengaluru 560 231, India
Raj Kumar
Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India

Abstract


The first phase of an airborne science campaign has been carried out with the Airborne Visible/Infrared Imaging Spectrometer Next Generation (AVIRIS-NG) imaging spectrometer over 22,840 sq. km across 57 sites in India during 84 days from 16 December 2015 to 6 March 2016. This campaign was organized under the Indian Space Research Organisation (ISRO) and National Aeronautics and Space Administration (NASA) joint initiative for HYperSpectral Imaging (HYSI) programme. To support the campaign, synchronous field campaigns and ground measurements were also carried out over these sites spanning themes related to crop, soil, forest, geology, coastal, ocean, river water, snow, urban, etc. AVIRIS-NG measures the spectral range from 380 to 2510 nm at 5 nm sampling with a ground sampling distance ranging from 4 to 8 m and flight altitude of 4–8 km. On-board and ground-based calibration and processing were carried out to generate level 0 (L0) and level 1 (L1) products respectively. An atmospheric correction scheme has been developed to convert the measured radiances to surface reflectance (level 2). These spectroscopic signatures are intended to discriminate surface types and retrieve physical and compositional parameters for the study of terrestrial, aquatic and atmospheric properties. The results from this campaign will support a range of objectives, including demonstration of advanced applications for societal benefits, validation of models/techniques, development of state-of-the-art spectral libraries, testing and refinement of automated tools for users, and definition of requirements for future space-based missions that can provide this class of measurements routinely for a range of important applications.

Keywords


Airborne Science Campaign, Hyperspectral Sensing, Imaging Spectrometer, Surface Reflectance.

References





DOI: https://doi.org/10.18520/cs%2Fv116%2Fi7%2F1082-1088