Multiple Volume Scattering in Random Media and Periodic Structures with Applications in Microwave Remote Sensing and Wave Functional Materials
The objective of my research is two-fold: to study wave scattering phenomena in dense volumetric random media and in periodic wave functional materials. For the first part, the goal is to use the microwave remote sensing technique to monitor water resources and global climate change. Towards this go...
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ftumdeepblue:oai:deepblue.lib.umich.edu:2027.42/135885 2024-01-07T09:43:59+01:00 Multiple Volume Scattering in Random Media and Periodic Structures with Applications in Microwave Remote Sensing and Wave Functional Materials Tan, Shurun Tsang, Leung Huterer, Dragan De Roo, Roger Dean Grbic, Anthony Sarabandi, Kamal application/pdf https://hdl.handle.net/2027.42/135885 en_US eng https://hdl.handle.net/2027.42/135885 orcid:0000-0002-7331-3484 Tan, Shurun; 0000-0002-7331-3484 random media electromagnetic scattering microwave remote sensing periodic structure and wave functional material Green's function dense media radiative transfer Electrical Engineering Physics Science (General) Engineering Science Thesis ftumdeepblue 2023-12-10T17:43:35Z The objective of my research is two-fold: to study wave scattering phenomena in dense volumetric random media and in periodic wave functional materials. For the first part, the goal is to use the microwave remote sensing technique to monitor water resources and global climate change. Towards this goal, I study the microwave scattering behavior of snow and ice sheet. For snowpack scattering, I have extended the traditional dense media radiative transfer (DMRT) approach to include cyclical corrections that give rise to backscattering enhancements, enabling the theory to model combined active and passive observations of snowpack using the same set of physical parameters. Besides DMRT, a fully coherent approach is also developed by solving Maxwell’s equations directly over the entire snowpack including a bottom half space. This revolutionary new approach produces consistent scattering and emission results, and demonstrates backscattering enhancements and coherent layer effects. The birefringence in anisotropic snow layers is also analyzed by numerically solving Maxwell’s equation directly. The effects of rapid density fluctuations in polar ice sheet emission in the 0.5~2.0 GHz spectrum are examined using both fully coherent and partially coherent layered media emission theories that agree with each other and distinct from incoherent approaches. For the second part, the goal is to develop integral equation based methods to solve wave scattering in periodic structures such as photonic crystals and metamaterials that can be used for broadband simulations. Set upon the concept of modal expansion of the periodic Green’s function, we have developed the method of broadband Green’s function with low wavenumber extraction (BBGFL), where a low wavenumber component is extracted and results a non-singular and fast-converging remaining part with simple wavenumber dependence. We’ve applied the technique to simulate band diagrams and modal solutions of periodic structures, and to construct broadband Green’s functions including ... Thesis Ice Sheet University of Michigan: Deep Blue |
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Open Polar |
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University of Michigan: Deep Blue |
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ftumdeepblue |
language |
English |
topic |
random media electromagnetic scattering microwave remote sensing periodic structure and wave functional material Green's function dense media radiative transfer Electrical Engineering Physics Science (General) Engineering Science |
spellingShingle |
random media electromagnetic scattering microwave remote sensing periodic structure and wave functional material Green's function dense media radiative transfer Electrical Engineering Physics Science (General) Engineering Science Tan, Shurun Multiple Volume Scattering in Random Media and Periodic Structures with Applications in Microwave Remote Sensing and Wave Functional Materials |
topic_facet |
random media electromagnetic scattering microwave remote sensing periodic structure and wave functional material Green's function dense media radiative transfer Electrical Engineering Physics Science (General) Engineering Science |
description |
The objective of my research is two-fold: to study wave scattering phenomena in dense volumetric random media and in periodic wave functional materials. For the first part, the goal is to use the microwave remote sensing technique to monitor water resources and global climate change. Towards this goal, I study the microwave scattering behavior of snow and ice sheet. For snowpack scattering, I have extended the traditional dense media radiative transfer (DMRT) approach to include cyclical corrections that give rise to backscattering enhancements, enabling the theory to model combined active and passive observations of snowpack using the same set of physical parameters. Besides DMRT, a fully coherent approach is also developed by solving Maxwell’s equations directly over the entire snowpack including a bottom half space. This revolutionary new approach produces consistent scattering and emission results, and demonstrates backscattering enhancements and coherent layer effects. The birefringence in anisotropic snow layers is also analyzed by numerically solving Maxwell’s equation directly. The effects of rapid density fluctuations in polar ice sheet emission in the 0.5~2.0 GHz spectrum are examined using both fully coherent and partially coherent layered media emission theories that agree with each other and distinct from incoherent approaches. For the second part, the goal is to develop integral equation based methods to solve wave scattering in periodic structures such as photonic crystals and metamaterials that can be used for broadband simulations. Set upon the concept of modal expansion of the periodic Green’s function, we have developed the method of broadband Green’s function with low wavenumber extraction (BBGFL), where a low wavenumber component is extracted and results a non-singular and fast-converging remaining part with simple wavenumber dependence. We’ve applied the technique to simulate band diagrams and modal solutions of periodic structures, and to construct broadband Green’s functions including ... |
author2 |
Tsang, Leung Huterer, Dragan De Roo, Roger Dean Grbic, Anthony Sarabandi, Kamal |
format |
Thesis |
author |
Tan, Shurun |
author_facet |
Tan, Shurun |
author_sort |
Tan, Shurun |
title |
Multiple Volume Scattering in Random Media and Periodic Structures with Applications in Microwave Remote Sensing and Wave Functional Materials |
title_short |
Multiple Volume Scattering in Random Media and Periodic Structures with Applications in Microwave Remote Sensing and Wave Functional Materials |
title_full |
Multiple Volume Scattering in Random Media and Periodic Structures with Applications in Microwave Remote Sensing and Wave Functional Materials |
title_fullStr |
Multiple Volume Scattering in Random Media and Periodic Structures with Applications in Microwave Remote Sensing and Wave Functional Materials |
title_full_unstemmed |
Multiple Volume Scattering in Random Media and Periodic Structures with Applications in Microwave Remote Sensing and Wave Functional Materials |
title_sort |
multiple volume scattering in random media and periodic structures with applications in microwave remote sensing and wave functional materials |
url |
https://hdl.handle.net/2027.42/135885 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
https://hdl.handle.net/2027.42/135885 orcid:0000-0002-7331-3484 Tan, Shurun; 0000-0002-7331-3484 |
_version_ |
1787425280988545024 |