Filters








2,658 Hits in 3.4 sec

BRDF laboratory measurements

S.R. Sandmeier, A.H. Strahler
2000 Remote Sensing Reviews  
Laboratory studies of the bidirectional reflectance distribution function (BRDF) have greatly improved our understanding of the bidirectional reflectance characteristics of natural and manmade surfaces  ...  Explorative research and model validation studies in astronomy, remote sensing, material science, and computer graphics have likewise increased the knowledge of BRDF and its relationship to surface properties  ...  B Exploration of BRDF Effects Scattering and Polarization Effects of Soil and Man-made Surfaces Astronomers have performed extensive bidirectional reflectance measurements in the laboratory in order  ... 
doi:10.1080/02757250009532398 fatcat:jvfmglkfsbeehex2swb6vfhzya

The effect of incident light polarization on vegetation Bidirectional Reflectance Factor

Georgi T. Georgiev, James J. Butler, Kurt J. Thome, K.Jon Ranson, Michael D. King
2010 2010 IEEE International Geoscience and Remote Sensing Symposium  
The laboratory-based Bidirectional Reflectance Factor (BRF) polarization study of vegetation is presented in this paper.  ...  The BRF is a function of wavelength and reflects the structural and optical properties of the surface.  ...  King: "Laboratory and airborne bidirectional reflectance distribution function analysis of vegetation leaves and soil samples", Transactions of IEEE Geoscience and Remote Sensing, 47, 8, 2546-2556 (2009  ... 
doi:10.1109/igarss.2010.5652893 dblp:conf/igarss/GeorgievBTRK10 fatcat:2aoibnwlpvac7mrlgccxo2ezre

Measurement of light polarization characteristics from an oil-polluted soil surface in near-infrared bands

Yuan Wang, LianXi Sheng, Ke Li, NaiZhuo Zhao, YunSheng Zhao
2009 Science Bulletin  
Measurement The polarized reflection of the soil sample was measured by a bidirectional reflection photometer (Changchun Research Institute for Optics Mechanics and Physics, CAS).  ...  Through the measurement of the polarized reflection of different soil, Song et al.  ... 
doi:10.1007/s11434-009-0067-9 fatcat:ryccvrkm2ffqxpbepe424prg5u

Simple equation to approximate the bidirectional reflectance from vegetative canopies and bare soil surfaces

C. L. Walthall, J. M. Norman, J. M. Welles, G. Campbell, B. L. Blad
1985 Applied Optics  
A simple equation has been developed for describing the bidirectional reflectance of some vegetative canopies and bare soil surfaces.  ...  A single equation for estimating soil bidirectional reflectance was obtained using the relationships between solar zenith angles and the simple equation coefficients for medium and rough soil distributions  ...  A single simple equation to describe the soil bidirectional reflectance distribution with solar incidence angle would be extremely useful in modeling plant canopy bidirectional reflectance, because the  ... 
doi:10.1364/ao.24.000383 pmid:18216958 fatcat:el22xln3bjdlveajetb2eqlwdi

A reflectance model for the homogeneous plant canopy and its inversion

Tiit Nilson, Andres Kuusk
1989 Remote Sensing of Environment  
The most specific characteristics of the model are: 1) considering both the single and the multiple scattering of radiation in the canopy and on the soil and 2) accounting for the specular reflection of  ...  The reflectance model fits well the results of measurements both of the seasonal course of the nadir reflectance and of the angular distribution of the directional reflectance of the winter wheat and barley  ...  (10) Here, Psom( r', r) is the bidirectional reflectance of the soil, and Q(r', r, H) the probability of seeing sunlit soil.  ... 
doi:10.1016/0034-4257(89)90015-1 fatcat:hs556lpedfh3zpbtz5hw5llvz4

Bidirectional reflectance of flat, optically thick particulate layers: an efficient radiative transfer solution and applications to snow and soil surfaces

Michael I. Mishchenko, Janna M. Dlugach, Edgard G. Yanovitskij, Nadia T. Zakharova
1999 Journal of Quantitative Spectroscopy and Radiative Transfer  
the exact values for soil particle models 1-4.  ...  We also examine the potential effect of ice crystal shape on the bidirectional reflectance of fiat snow surfaces and the applicability of the Henyey- Greenstein phase function and the 8-Eddington  ...  ., Bidirectional reflectance of polar andalpinesnowsurfaces, Ann. Glaciol., 1985, 6, 164-167. 19 . Leroux, C. and Fily, M., Modeling the effect of sastrugi on snow reflectance, J. Geophys.  ... 
doi:10.1016/s0022-4073(99)00028-x fatcat:z3pl62q4uncsxi5jbgtkmsjvli

A bidirectional reflectance model of the Earth's surface for the correction of remote sensing data

Jean-Louis Roujean, Marc Leroy, Pierre-Yves Deschamps
1992 Journal of Geophysical Research  
A surface bidirectional reflectance model has been developed for the correction of surface bidirectional effects in time series of satellite observations, where both sun and viewing angles are varying.  ...  The model considers that the observed surface bidirectional reflectance is the sum of two main processes operating at a local scale: (1) a diffuse reflection component taking into account the geometrical  ...  •'lots of I1 and 12 as a function of Os. 180' Fig. 5 . 5 Fig. 5. Polar plot showing scheme for plotting bidirectional reflectance factors.  ... 
doi:10.1029/92jd01411 fatcat:lq5nkf25fndybhvll4vjdt756i

Surface albedo from bidirectional reflectance

K.J. Ranson, J.R. Irons, C.S.T. Daughtry
1991 Remote Sensing of Environment  
The methods include a numerical integration technique and the integration of an empirically derived equation fi)r bidirectional reflectance.  ...  The validity of the described techniques is examined by comparing albedo computed front multiband radiometer data with simultaneously acquired pyranometer data from vegetated and bare soil surfaces.  ...  of bidirectional reflectance factors from several plant canopies and soil surfaces.  ... 
doi:10.1016/0034-4257(91)90012-u fatcat:oyng6jsv6rctnihl6jdvo7ifry

Retrieval of atmospheric properties and surface bidirectional reflectances over land from POLDER/ADEOS

M. Leroy, J. L. Deuzé, F. M. Bréon, O. Hautecoeur, M. Herman, J. C. Buriez, D. Tanré, S. Bouffiès, P. Chazette, J. L. Roujean
1997 Journal of Geophysical Research  
of a time series of directional reflectance measurements with a semiempirical bidirectional reflectance model.  ...  Polarization and Directionality of the Earth's Reflectances (POLDER) is a new instrument devoted to the global observation of the polarization and directionality of solar radiation reflected by the Earth-atmosphere  ...  Rpo1 .... f models the polarized reflectance of the surface.  ... 
doi:10.1029/96jd02662 fatcat:ltlyjjckirb2nnqmhglnslxi6e

A Normalization Scheme of Bidirectional Reflectances and Normalized Vegetation Indices for Short-Term Multi-Angular Spot Satellite Images

Chien-Hui Liu
2003 Journal of Marine Science and Technology  
This may be due to the effectiveness of SAVI in the reduction of viewing zenith angle effect induced by the soil and shadow and the error of the atmospheric correction model.  ...  The proposed normalization scheme can satisfactorily correct viewing zenith angle effect of bidirectional reflectances of trees.  ...  ACKNOWLEDGEMENTS This study was financially supported by the National Science Council of the Republic of China (grant No. NSC91-2212-E-265-001).  ... 
doi:10.51400/2709-6998.2291 fatcat:7dmubvya2jdz5g74zfcc7l6n4e

Reciprocity of the bidirectional reflectance distribution function (BRDF) in measurements and models of structured surfaces

W.C. Snyder
1998 IEEE Transactions on Geoscience and Remote Sensing  
Springsteen of Labsphere Inc. for suggesting the Clarke and Parry reference.  ...  ACKNOWLEDGMENT The author would like to thank X. Li, A. Strahler, Z. Wan, W. Wanner, and the anonymous reviewers for their helpful comments. The author also thanks A.  ...  Reciprocity of the Bidirectional Reflectance Distribution Function (BRDF) in Measurements and Models of Structured Surfaces William C.  ... 
doi:10.1109/36.662750 fatcat:lvkbz2t7nndl3p4uirjvfj46ni

On the relationship between FAPAR and NDVI

R.B. Myneni, D.L. Williams
1994 Remote Sensing of Environment  
For example, an increase in soil reflectance increases FAPAR but decreases TOC NDVI. Atmospheric and bidirectional effects confound the interpretation of top of the atmosphere (TOA) NDVI.  ...  The influence of pixel heterogeneity, background, atmospheric and bidirectional effects on the relationship between fraction of photosynthetically active radiation absorbed by the photosynthesizing tissue  ...  Soil Parameters Bidirectional reflectance from the soil surface R, was modeled according to Hapke's formulation.  ... 
doi:10.1016/0034-4257(94)90016-7 fatcat:pkztqq2sifbjpnfgrqx36tesni

RETRIEVAL OF AEROSOL MICROPHYSICAL PROPERTIES BASED ON THE OPTIMAL ESTIMATION METHOD: INFORMATION CONTENT ANALYSIS FOR SATELLITE POLARIMETRIC REMOTE SENSING MEASUREMENTS

W. Z. Hou, Z. Q. Li, F. X. Zheng, L. L. Qie
2018 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
with a linear one-parametric BPDF model to represent the contribution of polarized surface reflectance, thus further to decouple the surface-atmosphere contribution from the TOA measurements.  ...  To conduct the information content analysis, the synthetic data are simulated by the Unified Linearized Vector Radiative Transfer Model (UNLVTM) with the intensity and polarization together over bare soil  ...  Xiaoguang Xu in the University of Iowa. The codes used for simulations and information content analysis are available at the link of UNL-VRTM (www.unl-vrtm.com).  ... 
doi:10.5194/isprs-archives-xlii-3-533-2018 fatcat:uvwjmq3e7zeihl3sovhohjbzqu

A Coupled Vegetation–Soil Bidirectional Reflectance Model for a Semiarid Landscape

Wenge Ni, Xiaowen Li
2000 Remote Sensing of Environment  
A model for the bidirectional reflectance over soils is from grasslands to shrublands will affect the biogeochemi-* Raytheon ITSS and Department of Geography, University of tive azimuth angle.  ...  The importance of the BRDF in re-Maryland,  ...  Comparison of the predication of the ing the POLDER data. The authors thank Wenhan Qin and surface directional reflectance using only a soil model Curtis E.  ... 
doi:10.1016/s0034-4257(00)00127-9 fatcat:euus2lov2ffchj26u2eex4numu

Calculation of canopy bidirectional reflectance using the Monte Carlo method

J.K Ross, A.L Marshak
1988 Remote Sensing of Environment  
For a calculation of the plant canopy bidirectional reflectance distribution function (BRDF) the Monte Carlo method is used.  ...  The change of the BRDF near nadir view direction is influenced by soil brightness and by arrangement of the leaves on the stem.  ...  Polar diagram of the canopy bidirectional reflectance on the principal plane. Canopy A; spectral region of PAR; LAI = 2.69. No.  ... 
doi:10.1016/0034-4257(88)90026-0 fatcat:rb4lm63wofacbg6dcsbwy3oidy
« Previous Showing results 1 — 15 out of 2,658 results