6S (radiative transfer code)
Encyclopedia
6SV1 is an advanced radiative transfer code designed to simulate the reflection of solar radiation by a coupled atmosphere-surface system for a wide range of atmospheric, spectral and geometrical conditions.
It belongs to the group of procedures called Atmospheric correction
for the process of removing the effects of the atmosphere
on the reflectance values of images taken by satellite
or airborne sensors. The code operates on the basis of an SOS (successive orders of scattering) method and accounts for the polarization of radiation in the atmosphere through the calculation of the Q and U components of the Stokes
vector. It is a basic code for the calculation of look-up tables in the MODIS
atmospheric correction algorithm.
It belongs to the group of procedures called Atmospheric correction
Atmospheric correction
Atmospheric correction is the process of removing the effects of the atmosphere on the reflectance values of images taken by satellite or airborne sensors. There are bidirectional and empirical models for doing atmospheric correction on an image....
for the process of removing the effects of the atmosphere
Atmosphere
An atmosphere is a layer of gases that may surround a material body of sufficient mass, and that is held in place by the gravity of the body. An atmosphere may be retained for a longer duration, if the gravity is high and the atmosphere's temperature is low...
on the reflectance values of images taken by satellite
Satellite
In the context of spaceflight, a satellite is an object which has been placed into orbit by human endeavour. Such objects are sometimes called artificial satellites to distinguish them from natural satellites such as the Moon....
or airborne sensors. The code operates on the basis of an SOS (successive orders of scattering) method and accounts for the polarization of radiation in the atmosphere through the calculation of the Q and U components of the Stokes
Stokes
-Science:* Stokes , a measure of viscosity*Stokes flow*Stokes law*Stokes' law *Stokes parameters*Stokes radius*Stokes relations*Stokes shift*Stokes' theorem*Navier-Stokes equations-Places:* Stokes...
vector. It is a basic code for the calculation of look-up tables in the MODIS
MODIS
The Moderate-resolution Imaging Spectroradiometer is a payload scientific instrument launched into Earth orbit by NASA in 1999 on board the Terra Satellite, and in 2002 on board the Aqua satellite...
atmospheric correction algorithm.
External links
- http://6S.ltdri.org — 6SV1 Web site
- http://rtcodes.ltdri.org — Joint code comparison project
- http://modis-sr.ltdri.org — MODIS atmospheric correction group
- http://grass.osgeo.org/grass64/manuals/html64_user/i.atcorr.html - 6S ported to GRASS GISGRASS GISGRASS GIS is a free, open source geographical information system capable of handling raster, topological vector, image processing, and graphic data....
(i.atcorr) with support for additional sensors