Surface reflectance retrieval from imaging spectrometer data using three atmospheric codes

Karl Staenz; Daniel J. Williams; Gunar Fedosejevs; Phil M. Teillet

doi:10.1117/12.197242

21 December 1994 Surface reflectance retrieval from imaging spectrometer data using three atmospheric codes

Karl Staenz, Daniel J. Williams, Gunar Fedosejevs, Phil M. Teillet

Proceedings Volume 2318, Recent Advances in Remote Sensing and Hyperspectral Remote Sensing; (1994) https://doi.org/10.1117/12.197242
Event: Satellite Remote Sensing, 1994, Rome, Italy

Abstract

Surface reflectance retrieval from imaging spectrometer data has become important for quantitative information extraction in many application areas. In order to calculate surface reflectance from remotely measured radiance, radiative transfer codes play an important role for removal of the scattering and gaseous absorption effects of the atmosphere. The present study evaluates surface reflectances retrieved from airborne visible/infrared imaging spectrometer (AVIRIS) data using three radiative transfer codes: modified 5S (M5S), 6S, and MODTRAN2. Comparisons of the retrieved surface reflectance with ground-based reflectance were made for different target types such as asphalt, gravel, grass/soil mixture (soccer field), and water (Sooke Lake). The results indicate that the estimation of the atmospheric water vapor content is important for an accurate surface reflectance retrieval regardless of the radiative transfer code used. For the present atmospheric conditions, a difference of 0.1 in aerosol optical depth had little impact on the retrieved surface reflectance. The performance of MODTRAN2 is superior in the gas absorption regions compared to M5S and 6S.

Citation Download Citation

Karl Staenz, Daniel J. Williams, Gunar Fedosejevs, and Phil M. Teillet "Surface reflectance retrieval from imaging spectrometer data using three atmospheric codes", Proc. SPIE 2318, Recent Advances in Remote Sensing and Hyperspectral Remote Sensing, (21 December 1994); https://doi.org/10.1117/12.197242

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