5·î25Æü(ÌÚ)  15:30 -- 17:00 Prof. Umirzak M. Sultangazin
                            (Space Research Institute, Kazakhstan)
             ``Some Mathematical Problems of Atmospheric Correction
               on Remote Sensing Imagery''


¡ãAbstarct¡ä
The remote sensing from a satellite or an airborne platform of the land 
or the sea surface in the visible and near infrared is strongly affected 
by the presence of the atmosphere on the Sun-target-Sensor path. 
  In the present research, we consider some numerical methods of inverse 
problems for the calculation of atmospheric effects in remote sensing of 
the ground and oceans reflectance. The proposed method is based on the 
spherical harmonic in the solution of the radiation transfer equation in 
atmosphere with the inhomogeneous land surface. The developed method also 
consists in restitution of the optical characteristics of atmosphere and 
land surface on the using of radiance measured by the sensor. The method 
is established for general case of a reflection on the Earth's surface 
for multiple scattering.
  Outline of the presentation
  (1)Introduction
  (2)Posed problem of radiative transfer equation in 3-D plane geometry
  (3)Method of spherical harmonic for the radiative transfer equation
     and boundary conditions
  (4)Construction of a transmittance function based on the method of
     spherical harmonics
  (5)A simple algorithm for the atmospheric correction in the general
     case of reflection on the Earth's surface
  (6)A usage of this method for restitution of the temperature field
  (7)Conclusion