Results 21 to 30 of about 100,759 (311)
Reflection in a Translation Invariant Surface [PDF]
Mathematical Physics, Analysis and Geometry, 2007 We prove that the focal set generated by the reflection of a point source off a translation invariant surface consists of two sets: a curve and a surface. The focal curve lies in the plane orthogonal to the symmetry direction containing the source, while the focal surface is translation invariant.
Guilfoyle, Brendan, Klingenberg, Wilhelm
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On the Position of Intelligent Reflecting Surfaces
2021 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit), 2021 We study the positional impact of an intelligent reflecting surface (IRS) on the achievable rate for single and multiple antenna systems. We show that in IRS-aided single antenna systems, it is always best to place the IRS as close as possible to the transmitter or receiver since the large-scale fading for IRS-reflected links is the main factor that ...
Emad Ibrahim +2 more
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Communications in Science and Technology, 2019 Atmospheric correction has been challenging task in digital image processing. It requires several atmospheric parameters in order to obtain accurate surface reflectance of objects within the image scene.
Abdul Basith +3 more
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Hyperspectral Irradiance Data for a Comparison and an Analysis of Optical Satellite Spectral Observation: Based on Seogwipo Forest Flux Tower [PDF]
Geo Data, 2019 Comparison with ground-truth data is essential for developing and applying remote sensing algorithm towards the Earth surface. Unfortunately, major sources of domestic ground-truth data are depending on field-campaign with limited period because of ...
Hongtak Lee, JongMin Yeom
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On the Aperture Efficiency of Intelligent Reflecting Surfaces [PDF]
IEEE Wireless Communications Letters, 2021 The concept of intelligent reflecting surfaces (IRS) has recently gained significant attention due to their ability to manipulate the impinging electromagnetic signals and offer anomalous reflections. In this letter, we derive and address the missing piece of prior works, namely the IRS aperture efficiency .
Shih-Kai Chou +3 more
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Nature, 1975 Science and Technology of Surface Coating. Edited by B. N. Chapman and J. C. Anderson. Pp. xvii + 463. (Academic: London and New York, 1974.) £14.80; $41.50. Characterisation of Solid Surfaces. Edited byP. F. Kane and G. R. Larra-bee. Pp. xviii+670. (Plenum: London and New York, 1974.) $39.00.
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Remote Sensing, 2012 For satellite remote sensing, radiances received at the sensor are not only affected by the atmosphere but also by the topographic properties of the terrain surface.
Ke-Sheng Cheng, Hsien-Wei Chen
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USING AEROSOL REFLECTANCE FOR DUST DETECTION [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013 In this study we propose an approach for dust detection by aerosol reflectance over arid and urban region in clear sky condition. In urban and arid areas surface reflectance in red and infrared spectral is bright and hence shorter wavelength is required ...
S. Bahramvash Shams, A. Mohammadzade
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Research on Hyperspectral Surface Reflectance Dataset of Typical Ore Concentration Area in Hami Remote Sensing Test Field [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information SciencesSurface reflectance data is the basic data source for the hyperspectral parametric remote sensing products and remote sensing quantitative application, which is widely used in various application fields such as natural resources and ecological ...
S. Liang +5 more
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GF-1 WFV Surface Reflectance Quality Evaluation in Countries along “the Belt and Road”
Remote Sensing, 2023 The GaoFen-1 wide field of view (GF-1 WFV) has produced level 1 digital number data globally; however, most applications have focused on China, and data quality outside China has not been validated.
Yaozong Ding +9 more
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