Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Alain Sei"'
Autor:
Alain Sei
Publikováno v:
International Journal of Remote Sensing. 36:1253-1270
A new method for atmospheric correction of high-resolution patches over heterogeneous terrain is presented. This highly efficient method allows for the correction of high-resolution surface pressure variations of a patch surrounding an Aeronet site i
Autor:
Alain Sei
Publikováno v:
SPIE Proceedings.
A new method for atmospheric correction of high resolution patches over heterogeneous terrain is presented. This efficient method performs atmospheric correction of high resolution surface pressure variations over a patch where gaseous and aerosol co
Autor:
Hiroshi H. Agravante, Keith D. Hutchison, Barbara D. Iisager, Robert Mahoney, Alain Sei, John M. Jackson, Bruce Hauss
Publikováno v:
Journal of Atmospheric and Oceanic Technology. 27:1085-1094
An approach is presented to distinguish between clouds and heavy aerosols in sun-glint regions with automated cloud classification algorithms developed for the National Polar-orbiting Operational Environmental Satellite System (NPOESS) program. The a
Autor:
Eric Vermote, John M. Jackson, Thomas J. Kopp, Alain Sei, Barbara D. Iisager, Robert Mahoney, Keith D. Hutchison
Publikováno v:
Journal of Atmospheric and Oceanic Technology. 26:1388-1397
A geometry-based approach is presented to identify cloud shadows using an automated cloud classification algorithm developed for the National Polar-orbiting Operational Environmental Satellite System (NPOESS) program. These new procedures exploit bot
Publikováno v:
Radio Science. 34:385-411
An analysis of anomalous scattering behavior is performed on various corrugated surfaces relevant to oceanic scattering. In particular, it is shown that HH to VV ratios larger than 1 are produced as a result of polarization anomalies in the scatterin
Autor:
Alain Sei
Publikováno v:
SIAM Journal on Scientific Computing. 16:898-916
A family of numerical schemes based on finite difference operators is introduced for the computation of elastic waves. We use a displacement-stress formulation of the model. After deriving some stability results, we give an analysis of the computatio
Autor:
Alain Sei, William W. Symes
Publikováno v:
Journal of Scientific Computing. 10:1-27
We present in this paper a comparison of the dispersion properties for several finite-difference approximations of the acoustic wave equation. We investigate the compact and staggered schemes of fourth order accuracy in space and of second order or f
Autor:
Alain Sei, William W. Symes
Publikováno v:
Applied Numerical Mathematics. 15:465-480
A family of finite difference schemes for the acoustic wave equation in heterogeneous media is introduced. The precision and computational cost are analyzed in two cases. First, a two-layered medium is considered. The order of convergence at the inte