Title :
Estimating nonlinear mixing effects for arid vegetation scenes with MISR channels and observation directions
Author :
Villeneuve, Pierre V. ; Gerstl, Siegfried A. ; Asner, Gregory P.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
A Monte-Carlo ray-trace model has been applied to simulated sparse vegetation desert canopies in an effort to quantify the spectral mixing (both linear and nonlinear) occurring as a result of radiative interactions between vegetation and soil. This work is of interest as NASA is preparing to launch new instrument such as MISR and MODIS. MISR will observe each ground pixel from nine different directions in three visible channels and one near-infrared channel. It is desired to study angular variations in spectral mixing by quantifying the amount of nonlinear spectral mixing occurring in the MISR observing directions
Keywords :
geophysical techniques; remote sensing; MISR; MODIS; Monte Carlo ray trace model; angular variation; arid vegetation scene; canopy; desert; geophysical measurement technique; land surface; light scattering; multispectral remote sensing; near-infrared; nonlinear mixing effect; nonlinear spectral mixing; observation direction; optical imaging; radiative interaction; soil effect; sparse vegetation; spectral mixing; terrain mapping; vegetation mapping; visible; Instruments; Layout; MODIS; NASA; Nonlinear optics; Optical mixing; Optical reflection; Remote sensing; Soil; Vegetation;
Conference_Titel :
Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4403-0
DOI :
10.1109/IGARSS.1998.691361
