Correction of satellite imagery over mountainous terrain
- 20 June 1998
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 37 (18), 4004-4015
- https://doi.org/10.1364/ao.37.004004
Abstract
A method for the radiometric correction of satellite imagery over mountainous terrain has been developed to remove atmospheric and topographic effects. The algorithm accounts for horizontally varying atmospheric conditions and also includes the height dependence of the atmospheric radiance and transmittance functions to simulate the simplified properties of a three-dimensional atmosphere. A database has been compiled that contains the results of radiative transfer calculations (atmospheric transmittance, path radiance, direct and diffuse solar flux) for a wide range of weather conditions. A digital elevation model is used to obtain information about surface elevation, slope, and orientation. Based on the Lambertian assumption the surface reflectance in rugged terrain is calculated for the specified atmospheric conditions. Regions with extreme illumination geometries sensitive to BRDF effects can be optionally processed separately. The method is restricted to high spatial resolution satellite sensors with a small swath angle such as the Landsat thematic mapper and Systeme pour l’Observation de la Terre high resolution visible, since some simplifying assumptions were made to reduce the required image processing time.Keywords
This publication has 22 references indexed in Scilit:
- A physically-based model to correct atmospheric and illumination effects in optical satellite data of rugged terrainIEEE Transactions on Geoscience and Remote Sensing, 1997
- Correction of atmospheric and topographic effects for high spatial resolution satellite imageryInternational Journal of Remote Sensing, 1997
- A spatially adaptive fast atmospheric correction algorithmInternational Journal of Remote Sensing, 1996
- Indian remote sensing spacecraft—1C/1DInternational Journal of Remote Sensing, 1995
- Topographic effects on bidirectional and hemispherical reflectances calculated with a geometric-optical canopy modelIEEE Transactions on Geoscience and Remote Sensing, 1994
- Bidirectional reflectances of selected desert surfaces and their three-parameter soil characterizationAgricultural and Forest Meteorology, 1990
- Calibration comparison for the Lands at 4 and 5 multispectral scanners and thematic mappersApplied Optics, 1989
- Algorithm for automatic atmospheric corrections to visible and near-IR satellite imageryInternational Journal of Remote Sensing, 1988
- Atmospheric effects in satellite imaging of mountainous terrainApplied Optics, 1983