Combination of MLFMA and ACA to Accelerate Computation of Scattering from Underground Targets
Joint Authors
Liu, Zhiwei
Tang, Dan
Zhang, Zhanyang
Zhang, Yueyuan
Wang, Xiaoli
Jie, Shunli
Source
International Journal of Antennas and Propagation
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-23
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Electromagnetic nondestructive evaluation of underground targets is of great significance for the safety of urban construction.
Based on the accurate and efficient simulation of scattering, we can detect the underground targets successfully.
As one of the most popular numerical methods in electromagnetics, surface integral equations solved by method of moments (MoM) are used to simulate the scattering from underground targets in this paper.
The integral equation is discretized by RWG basis and Galerkin testing.
Multilevel fast multipole algorithm (MLFMA) is used to decrease the computation complexity and memory cost.
However, the octree used in MLFMA is not applied for rough surfaces and targets together; both the surface and target need to construct octree separately.
Since the combination of MLFMA and ACA can build a more efficient method to compute scattering from underground targets, adaptive cross approximation (ACA) is used to compress the impedance matrix instead of MLFMA for the coupling action between the rough surface and target.
That is to say that, when calculating the scattering of two targets, target self-interaction is suitable for MLFMA calculation and the coupling between targets is approximated by ACA.
Numerical results demonstrate the accuracy and efficiency of our proposed method.
American Psychological Association (APA)
Liu, Zhiwei& Tang, Dan& Zhang, Zhanyang& Zhang, Yueyuan& Wang, Xiaoli& Jie, Shunli. 2019. Combination of MLFMA and ACA to Accelerate Computation of Scattering from Underground Targets. International Journal of Antennas and Propagation،Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1157346
Modern Language Association (MLA)
Liu, Zhiwei…[et al.]. Combination of MLFMA and ACA to Accelerate Computation of Scattering from Underground Targets. International Journal of Antennas and Propagation No. 2019 (2019), pp.1-9.
https://search.emarefa.net/detail/BIM-1157346
American Medical Association (AMA)
Liu, Zhiwei& Tang, Dan& Zhang, Zhanyang& Zhang, Yueyuan& Wang, Xiaoli& Jie, Shunli. Combination of MLFMA and ACA to Accelerate Computation of Scattering from Underground Targets. International Journal of Antennas and Propagation. 2019. Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1157346
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1157346