Polarization Signature of Lacunarity for Heterogeneity Estimation of Radar Backscattering from Pine Forest

Дмитриев, А. В.; Чимитдоржиев, Т. Н.; Dagurov, P. N.

doi:10.1109/igarss.2018.8518498

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…If β decreases, the sample heterogeneity decreases and consequently, the homogeneity increases. This is related to both the complexity and the surface texture 52 . As β does not vary depending on the size of boxes, it now represents an intrinsic coefficient of the sample.…”

Section: Methodsmentioning

confidence: 99%

Nanoscale morphology and fractal analysis of TiO₂ coatings on ITO substrate by electrodeposition

Amâncio

Pinto

Matos

et al. 2021

Journal of Microscopy

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In this paper, we introduced an advanced discussion of the 3D morphology of TiO2 coatings deposited on ITO substrate by electrodeposition under different deposition times. Atomic force microscopy was applied for obtaining topographic images of the samples. The images were processed using the MountainsMap 8.0 commercial software according to ISO 25178‐2:2012. Moreover, fractal theory was applied to study the surface microtexture of coatings. The morphology was affected by the deposition time, where the grain size decreased with the increase of the time, making film's surfaces smoother. In addition, the surface roughness exhibited a random behaviour, but does not presented significant difference between samples. The fractal dimension showed similar values for all coatings. In contrast, surface texture isotropy also exhibited random behaviour. However, advanced fractal parameters revealed that when the deposition time increased, the coatings microtexture has become uniform and less porous. Furthermore, all coatings presented high topographic uniformity, regardless of deposition time. These results revealed that the morphology and microtexture of TiO2‐based coatings can be controlled by the deposition time. Lay Description An advanced characterization on the micromorphology of 3D morphology, using AFM images, of Titanium dioxide (TiO2) coatings deposited on ITO substrate by electrodeposition under different deposition times. TiO2 is one of the most studied semiconductors to make photovoltaic devices. The versatility of this semiconductor is associated with low toxicity, high photochemical stability, abundance, and the facility to obtain by conventional synthesis routes. The obtention of a homogeneous and stable layer in the semiconductor TiO2 film deposition is a crucial stage in the assembly of sensitized photovoltaic devices. Atomic Force Microscopy (AFM) is a technique which can magnify up to a billion times and it uses a tip or probe which touches the sample surface point by point. The tip deflection is interpreted as the surface topography by the software, producing 2D or 3D images that generate several tribological parameters such as roughness in respect to a scanned area, has been a technique widely reported in the morphological characterization, determination of thickness, roughness, and particle size in thin films. Therefore, in this paper, the morphology was studied by atomic force microscopy using MountainsMap commercial software. The main goal was to study the influence of the deposition time on the morphology and microtexture of the material. New parameters such as surface entropy, fractal succolarity and fractal lacunarity were obtained for studying coatings microtexture's complexity.

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Section: Methodsmentioning

confidence: 99%

Nanoscale morphology and fractal analysis of TiO₂ coatings on ITO substrate by electrodeposition

Amâncio

Pinto

Matos

et al. 2021

Journal of Microscopy

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“…• с использованием фрактального анализафрактальной размерности (ж, з, и) и лакунарности (к, л, м) (Dmitriev et al, 2018).…”

Section: результаты исследований и их анализunclassified

“…Значения, попадающие в данную область, усредняются для получения результирующей лакунарности. Таким образом, имеем одно значение Λ ij для каждой пары углов ( (Dmitriev et al, 2018).…”

Section: Introductionunclassified

Spatial anisotropy assessment of the forest vegetation heterogeneity at various azimuth angles of the radar polarimetric sensing

Бондур

Bondur²,

Чимитдоржиев

et al. 2019

Исследования Земли из Космоса

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The results of studies to assess the texture of L- and C-band radar polarimetric images obtained from SIR-C and ALOS PALSAR-1 satellites for the analysis of forest vegetation characteristics using different signatures are summarized. A fractal polarization signature is proposed for the study, which allows to estimate the spatial anisotropy of forest vegetation inhomogeneities at different azimuthal angles of radar sensing. In addition, the signature of lacunarity is suggested as a tool for qualitative evaluation of the angular distribution of tree branches. The heterogeneities of forest vegetation at the test site near the Baikal Lake have been estimated based on the results of the analysis of fractal dimension and lacunarity at different states of the polarization ellipse.

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Possible Inaccuracy of Canopy Height Model Estimation for Dense and Sparse Boreal Forest with Tandem-X DSM and ALOS Palsar DEM Fusion, Case Study from the Baikal Lake Region, Russia

Чимитдоржиев

Дмитриев

Kirbizhekova

et al. 2019

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium

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Polarization Signature of Lacunarity for Heterogeneity Estimation of Radar Backscattering from Pine Forest

Cited by 4 publications

References 14 publications

Nanoscale morphology and fractal analysis of TiO₂ coatings on ITO substrate by electrodeposition

Nanoscale morphology and fractal analysis of TiO₂ coatings on ITO substrate by electrodeposition

Spatial anisotropy assessment of the forest vegetation heterogeneity at various azimuth angles of the radar polarimetric sensing

Possible Inaccuracy of Canopy Height Model Estimation for Dense and Sparse Boreal Forest with Tandem-X DSM and ALOS Palsar DEM Fusion, Case Study from the Baikal Lake Region, Russia

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Polarization Signature of Lacunarity for Heterogeneity Estimation of Radar Backscattering from Pine Forest

Cited by 4 publications

References 14 publications

Nanoscale morphology and fractal analysis of TiO2 coatings on ITO substrate by electrodeposition

Nanoscale morphology and fractal analysis of TiO2 coatings on ITO substrate by electrodeposition

Spatial anisotropy assessment of the forest vegetation heterogeneity at various azimuth angles of the radar polarimetric sensing

Possible Inaccuracy of Canopy Height Model Estimation for Dense and Sparse Boreal Forest with Tandem-X DSM and ALOS Palsar DEM Fusion, Case Study from the Baikal Lake Region, Russia

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Nanoscale morphology and fractal analysis of TiO₂ coatings on ITO substrate by electrodeposition

Nanoscale morphology and fractal analysis of TiO₂ coatings on ITO substrate by electrodeposition