Application of physics-based two-grid method and sparse matrix canonical grid method for numerical simulations of emissivities of soils with rough surfaces at microwave frequencies

Qin Li;  Leung Tsang;  Jiancheng Shi;  Chi Hou Chan

doi:10.1109/36.851963

Application of physics-based two-grid method and sparse matrix canonical grid method for numerical simulations of emissivities of soils with rough surfaces at microwave frequencies

IEEE Transactions on Geoscience and Remote Sensing ◽

10.1109/36.851963 ◽

2000 ◽

Vol 38 (4) ◽

pp. 1635-1643 ◽

Cited By ~ 28

Author(s):

Qin Li ◽

Leung Tsang ◽

Jiancheng Shi ◽

Chi Hou Chan

Keyword(s):

Numerical Simulations ◽

Sparse Matrix ◽

Rough Surfaces ◽

Grid Method ◽

Microwave Frequencies

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Numerical simulations and backscattering enhancement of electromagnetic waves from two-dimensional dielectric random rough surfaces with the sparse-matrix canonical grid method

Journal of the Optical Society of America A ◽

10.1364/josaa.14.001515 ◽

1997 ◽

Vol 14 (7) ◽

pp. 1515 ◽

Cited By ~ 84

Author(s):

Kyung Pak ◽

Leung Tsang ◽

Joel Johnson

Keyword(s):

Numerical Simulations ◽

Electromagnetic Waves ◽

Sparse Matrix ◽

Rough Surfaces ◽

Grid Method ◽

Two Dimensional ◽

Random Rough Surfaces

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Parallel implementation of the sparse-matrix canonical grid method for two-dimensional lossy dielectric random rough surfaces (3D scattering problems) on a Beowulf system

IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) ◽

10.1109/aps.1999.789192 ◽

2003 ◽

Author(s):

S.Q. Li ◽

C.H. Chan ◽

L. Tsang ◽

Q. Li

Keyword(s):

Parallel Implementation ◽

Sparse Matrix ◽

Rough Surfaces ◽

Grid Method ◽

Two Dimensional ◽

Scattering Problems ◽

Random Rough Surfaces ◽

Lossy Dielectric

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Parallel implementation of the sparse-matrix/canonical grid method for the analysis of two-dimensional random rough surfaces (three-dimensional scattering problem) on a Beowulf system

IEEE Transactions on Geoscience and Remote Sensing ◽

10.1109/36.851959 ◽

2000 ◽

Vol 38 (4) ◽

pp. 1600-1608 ◽

Cited By ~ 25

Author(s):

Shu-Qing Li ◽

Chi Hou Chan ◽

Leung Tsang ◽

Qin Li ◽

Lin Zhou

Keyword(s):

Parallel Implementation ◽

Sparse Matrix ◽

Rough Surfaces ◽

Scattering Problem ◽

Three Dimensional ◽

Grid Method ◽

Two Dimensional ◽

Random Rough Surfaces

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Multilevel expansion of the sparse-matrix canonical grid method for two-dimensional random rough surfaces

IGARSS 2000. IEEE 2000 International Geoscience and Remote Sensing Symposium. Taking the Pulse of the Planet: The Role of Remote Sensing in Managing the Environment. Proceedings (Cat. No.00CH37120) ◽

10.1109/igarss.2000.860353 ◽

2002 ◽

Cited By ~ 6

Author(s):

S.Q. Li ◽

C.H. Chan ◽

M.Y. Xia ◽

L. Tsang

Keyword(s):

Sparse Matrix ◽

Rough Surfaces ◽

Grid Method ◽

Two Dimensional ◽

Random Rough Surfaces

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Multilevel expansion of the sparse-matrix canonical grid method for two-dimensional random rough surfaces

IEEE Transactions on Antennas and Propagation ◽

10.1109/8.964094 ◽

2001 ◽

Vol 49 (11) ◽

pp. 1579-1589 ◽

Cited By ~ 22

Author(s):

Shu-Qing Li ◽

Chi Hou Chan ◽

Ming-Yao Xia ◽

Bo Zhang ◽

Leung Tsang

Keyword(s):

Sparse Matrix ◽

Rough Surfaces ◽

Grid Method ◽

Two Dimensional ◽

Random Rough Surfaces

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An efficient algorithm for electromagnetic scattering from rough surfaces using a single integral equation and multilevel sparse-matrix canonical-grid method

IEEE Transactions on Antennas and Propagation ◽

10.1109/tap.2003.812238 ◽

2003 ◽

Vol 51 (6) ◽

pp. 1142-1149 ◽

Cited By ~ 35

Author(s):

M.Y. Xia ◽

C.H. Chan ◽

S.Q. Li ◽

B. Zhang ◽

L. Tsang

Keyword(s):

Integral Equation ◽

Electromagnetic Scattering ◽

Efficient Algorithm ◽

Sparse Matrix ◽

Rough Surfaces ◽

Grid Method ◽

Single Integral

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Simulation of wave scattering from rough surfaces using single integral equation and multilevel sparse-matrix canonical-grid method

IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229) ◽

10.1109/aps.2001.960204 ◽

2002 ◽

Author(s):

M.Y. Xia ◽

C.H. Chan ◽

S.Q. Li ◽

B. Zhang ◽

L. Tsang

Keyword(s):

Integral Equation ◽

Wave Scattering ◽

Sparse Matrix ◽

Rough Surfaces ◽

Grid Method ◽

Single Integral

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Emissivities and back-scattering coefficients of random lossy dielectric rough surfaces at microwave frequencies based on 3-dimensional numerical simulations

IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217) ◽

10.1109/igarss.2001.976845 ◽

2002 ◽

Cited By ~ 1

Author(s):

L. Zhou ◽

Q. Li ◽

L. Tsang ◽

J. Shi ◽

V. Jandhyala ◽

...

Keyword(s):

Numerical Simulations ◽

Rough Surfaces ◽

Microwave Frequencies ◽

3 Dimensional ◽

Scattering Coefficients ◽

Back Scattering ◽

Lossy Dielectric

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Analysing EM scattering from randomly rough surfaces using stochastic second-degree iterative method, sparse matrix algorithm and Chebyshev approximation

Electronics Letters ◽

10.1049/el.2009.2543 ◽

2009 ◽

Vol 45 (6) ◽

pp. 292 ◽

Cited By ~ 8

Author(s):

Y. Du ◽

J.C. Shi ◽

Z.Y. Li ◽

J.A. Kong

Keyword(s):

Iterative Method ◽

Sparse Matrix ◽

Rough Surfaces ◽

Chebyshev Approximation ◽

Em Scattering ◽

Matrix Algorithm ◽

Randomly Rough Surfaces ◽

Second Degree

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Influence of the in-plan distribution of asperities on the normal contact of periodically rough surfaces

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1177/0954406216646603 ◽

2016 ◽

Vol 230 (9) ◽

pp. 1382-1391

Author(s):

K Houanoh ◽

H-P Yin ◽

J Cesbron ◽

Q-C He

Keyword(s):

Numerical Simulations ◽

Half Space ◽

Contact Area ◽

Rough Surfaces ◽

Elastic Half Space ◽

Real Contact Area ◽

Normal Contact ◽

Real Contact ◽

Full Contact ◽

Rigid Surfaces

The present work aims to analyze the influence of the in-plan distribution of asperities on the contact between periodically rough surfaces. Square pattern and hexagonal pattern rigid surfaces are considered. Their contact with an elastic half-space is analyzed by numerical simulations. Three surfaces are generated with identical asperities periodically distributed in a plan according to different patterns. It follows from numerical results that when the load and the real contact area are small, the asperities act almost independently. However, the interaction between close asperities increases with the load becomes intensified and has a significant effect on the contact area when the situation is close to full contact.

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