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A Non-Radiative Transfer Approach to Radiometric Vicarious CalibrationTOA (top-of-atmosphere) radiance from high-spatial-resolution satellite imagery systems is important for a wide variety of research and applications. Many research initiatives require data with absolute radiometric accuracy better than a few percent. The conversion of satellite digital numbers to radiance depends on accurate radiometric calibration. A common method for determining and validating radiometric calibrations is to rely upon vicarious calibration approaches. Historically, vicarious calibration methods use radiative transfer codes with ground-based atmosphere and surface reflectance or radiance inputs for estimating TOA radiance values. These TOA radiance values are compared against the satellite digital numbers to determine the radiometric calibration. However, the radiative transfer codes used depend on many assumptions about the aerosol properties and the atmospheric point spread function. A measurement-based atmospheric radiance estimation approach for high-spatial-resolution, multispectral, visible/near-infrared sensors is presented that eliminates the use of radiative transfer codes and many of the underlying assumptions. A comparison between the radiative transfer and non-radiative transfer approaches is made.
Document ID
20070010657
Acquisition Source
Stennis Space Center
Document Type
Conference Paper
Authors
Ryan, Robert
(Science Systems and Applications, Inc. Bay Saint Louis, MS, United States)
Holekamp, Kara
(Science Systems and Applications, Inc. Bay Saint Louis, MS, United States)
Pagnutti, Mary
(Science Systems and Applications, Inc. Bay Saint Louis, MS, United States)
Stanley, Thomas
(NASA Stennis Space Center Stennis Space Center, MS, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2007
Subject Category
Space Sciences (General)
Report/Patent Number
SSTI-2220-0101
Meeting Information
Meeting: JACIE 2007 Civil Commercial Imagery Evaluation Workshop
Location: Fairfax, VA
Country: United States
Start Date: March 20, 2007
End Date: March 22, 2007
Funding Number(s)
CONTRACT_GRANT: NNS04AB54T
Distribution Limits
Public
Copyright
Other

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