Abstract

Bidirectional reflection distribution functions (BRDFs) of inhomogeneous land surfaces that consist of protruding structures on a flat suface are modeled. The components are allowed to have individual reflection properties. Modeling the BRDFs takes into account the simultaneous influence of vertical structure and of different anisotropic BRDFs assigned to the components. A realistic simulation of bare soil and partly or fully vegetated surfaces with a pronounced 3-D structure is possible. A sensitivity study shows to what extent surface reflection is affected by vertical structure and zenith angle of incidence when different BRDFs are assigned to both surface components. The results can be used to decide for which conditions area weighted adding of BRDFs from homogeneous surfaces is sufficient to get an average BRDF for an inhomogeneous surface. It tends to be insufficient when vertical structure, zenith angle of incidence, and the albedo of the ground increase in relation to the albedo of the protrusions.

© 1990 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Reflected irradiance indicatrices of natural surfaces and their effect on albedo

Frank D. Eaton and Inge Dirmhirn
Appl. Opt. 18(7) 994-1008 (1979)

Estimation of land surface directional emissivity in mid-infrared channel around 4.0 μm from MODIS data

Bo-Hui Tang, Zhao-Liang Li, and Yuyun Bi
Opt. Express 17(5) 3173-3182 (2009)

Analysis of the spectral and angular response of the vegetated surface polarization for the purpose of aerosol remote sensing over land

F. Waquet, J. -F. Léon, B. Cairns, P. Goloub, J. -L. Deuzé, and F. Auriol
Appl. Opt. 48(6) 1228-1236 (2009)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (6)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription