Results 21 to 30 of about 12,499 (195)

Adjustment of Sentinel-2 Multi-Spectral Instrument (MSI) Red-Edge Band Reflectance to Nadir BRDF Adjusted Reflectance (NBAR) and Quantification of Red-Edge Band BRDF Effects

Remote Sensing, 2017
Optical wavelength satellite data have directional reflectance effects over non-Lambertian surfaces, described by the bidirectional reflectance distribution function (BRDF).
David P. Roy, Zhongbin Li, Hankui K. Zhang   +2 more
doaj   +1 more source

A Kernel-Driven BRDF Approach to Correct Airborne Hyperspectral Imagery over Forested Areas with Rugged Topography

Remote Sensing, 2020
Airborne hyper-spectral imaging has been proven to be an efficient means to provide new insights for the retrieval of biophysical variables. However, quantitative estimates of unbiased information derived from airborne hyperspectral measurements ...
Wen Jia, Yong Pang, Riccardo Tortini, Daniel Schläpfer, Zengyuan Li, Jean-Louis Roujean   +5 more
doaj   +1 more source

Large-angle scattered light measurements for quantum-noise filter cavity design studies [PDF]

, 2012
Optical loss from scattered light could limit the performance of quantum-noise filter cavities being considered for an upgrade to the Advanced LIGO gravitational-wave detectors.
Anderson, Bhandari, Blazey, Bruegge, Fabian Magaña-Sandoval, Grand, Harms, Jacqueline Lee, Jan Harms, Joshua R. Smith, Kimble, Kuroda, Peter R. Saulson, Rana X. Adhikari, Rempe, Sato, Shannon Sankar, Smith, Ueda, Ueda, Valera Frolov, Walsh, Zanaveskin   +22 more
core   +2 more sources

An Empirical Assessment of Angular Dependency for RedEdge-M in Sloped Terrain Viticulture

Remote Sensing, 2019
For grape canopy pixels captured by an unmanned aerial vehicle (UAV) tilt-mounted RedEdge-M multispectral sensor in a sloped vineyard, an in situ Walthall model can be established with purely image-based methods.
Chizhang Gong, Henning Buddenbaum, Rebecca Retzlaff, Thomas Udelhoven   +3 more
doaj   +1 more source

BRDF LABORATORY MEASUREMENTS USING A CAMERA-AIDED SPECTRORADIOMETER [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Numerous natural surfaces observed using Remote Sensing do not reflect light as Lambertian surfaces. Instead, their reflection is highly dependent on two main directions: the direction of the light source and the observation viewing angle, which ...
E. Roitberg, I. Malgeac, S. Weil-Zattelman, F. Kizel   +3 more
doaj   +1 more source

Evaluating the Performance of Satellite-Derived Vegetation Indices for Estimating Gross Primary Productivity Using FLUXNET Observations across the Globe

Remote Sensing, 2019
Satellite-derived vegetation indices (VIs) have been widely used to approximate or estimate gross primary productivity (GPP). However, it remains unclear how the VI-GPP relationship varies with indices, biomes, timescales, and the bidirectional ...
Xiaojuan Huang, Jingfeng Xiao, Mingguo Ma   +2 more
doaj   +1 more source

A new hybrid geometrical optics and radiance based scattering model for ray tracing applications [PDF]

, 2005
This paper presents a new hybrid geometrical optics (GO) and radiance based rough surface scattering model for use in ray tracing propagation models. The reflectance model includes the effects of both specular and diffuse reflection.
Ng, KH, Nix, AR, Tameh, EK
core   +2 more sources

Efficient polarimetric BRDF model

Optics Express, 2015
The purpose of the present manuscript is to present a polarimetric bidirectional reflectance distribution function (BRDF) model suitable for hyperspectral and polarimetric signature modelling. The model is based on a further development of a previously published four-parameter model that has been generalized in order to account for different types of ...
Ingmar G E, Renhorn, Tomas, Hallberg, Glenn D, Boreman   +2 more
openaire   +2 more sources

Characterizing Land Surface Anisotropic Reflectance over Rugged Terrain: A Review of Concepts and Recent Developments

Remote Sensing, 2018
Rugged terrain, including mountains, hills, and some high lands are typical land surfaces around the world. As a physical parameter for characterizing the anisotropic reflectance of the land surface, the importance of the bidirectional reflectance ...
Jianguang Wen, Qiang Liu, Qing Xiao, Qinhuo Liu, Dongqin You, Dalei Hao, Shengbiao Wu, Xingwen Lin   +7 more
doaj   +1 more source

Relationship between Light Use Efficiency and Photochemical Reflectance Index Corrected Using a BRDF Model at a Subtropical Mixed Forest

Remote Sensing, 2020
Light use efficiency (LUE) is a key indicator of vegetation photosynthesis, which provides important insights into how vegetation productivity responds to environmental conditions.
Li Ma, Shaoqiang Wang, Jinghua Chen, Bin Chen, Leiming Zhang, Lixia Ma, Muhammad Amir, Leigang Sun, Guoyi Zhou, Ze Meng   +9 more
doaj   +1 more source