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A Spectral Acceleration Approach for the Spherical Harmonics Discrete Ordinate Method

Doicu, A. and Efremenko, Dmitry S. and Trautmann, Thomas (2020) A Spectral Acceleration Approach for the Spherical Harmonics Discrete Ordinate Method. Remote Sensing, 12 (22), p. 3703. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/rs12223703. ISSN 2072-4292.

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Official URL: https://doi.org/10.3390/rs12223703


A spectral acceleration approach for the spherical harmonics discrete ordinate method (SHDOM) is designed. This approach combines the correlated k-distribution method and some dimensionality reduction techniques applied on the optical parameters of an atmospheric system. The dimensionality reduction techniques used in this study are the linear embedding methods: principal component analysis, locality pursuit embedding, locality preserving projection, and locally embedded analysis. Through a numerical analysis, it is shown that relative to the correlated k-distribution method, PCA in conjunction with a second-order of scattering approximation yields an acceleration factor of 12. This implies that SHDOM equipped with this acceleration approach is efficient enough to perform spectral integration of radiance fields in inhomogeneous multi-dimensional media.

Item URL in elib:https://elib.dlr.de/137491/
Document Type:Article
Title:A Spectral Acceleration Approach for the Spherical Harmonics Discrete Ordinate Method
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Doicu, A.Adrian.Doicu (at) dlr.deUNSPECIFIED
Efremenko, Dmitry S.dmitry.efremenko (at) dlr.dehttps://orcid.org/0000-0002-7449-5072
Trautmann, ThomasThomas.Trautmann (at) dlr.deUNSPECIFIED
Date:November 2020
Journal or Publication Title:Remote Sensing
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.3390/rs12223703
Page Range:p. 3703
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Keywords:SHDOM; PCA; three dimensional radiative transfer
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Optical remote sensing, Vorhaben Spectroscopic Methods in Remote Sensing (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Efremenko, Dr Dmitry
Deposited On:16 Nov 2020 10:53
Last Modified:17 Nov 2020 18:27

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