scholarly journals HIGHER ORDER METHOD OF MOMENTS FOR BISTATIC SCATTERING FROM 2D PEC ROUGH SURFACE WITH GEOMETRIC MODELING BY NURBS SURFACE

2012 ◽  
Vol 130 ◽  
pp. 85-104 ◽  
Author(s):  
An-Qi Wang ◽  
Li-Xin Guo ◽  
Yi-Wen Wei ◽  
Jing Ma
Keyword(s):  
Rough Surface ◽  
Method Of Moments ◽  
Geometric Modeling ◽  
Higher Order ◽  
Order Method ◽  
Nurbs Surface ◽  
Bistatic Scattering ◽  
Higher Order Method

New Higher Order Method of Moments for Accurate Inductance Extraction in Transmission Lines of Complex Cross Sections

2017 ◽  
Vol 65 (12) ◽  
pp. 5104-5112 ◽  
Author(s):  
Farhad Sheikh Hosseini Lori ◽  
Mohammad Shakander Hosen ◽  
Anton Menshov ◽  
Mohammad Shafieipour ◽  
Vladimir I. Okhmatovski
Keyword(s):  
Method Of Moments ◽  
Cross Sections ◽  
Transmission Lines ◽  
Higher Order ◽  
Order Method ◽  
Inductance Extraction ◽  
Complex Cross ◽  
Higher Order Method

scholarly journals An Efficient GPU-Based Out-of-Core LU Solver of Parallel Higher-Order Method of Moments for Solving Airborne Array Problems

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Zhongchao Lin ◽  
Yan Chen ◽  
Yu Zhang ◽  
Xunwang Zhao ◽  
Huanhuan Zhang
Keyword(s):  
Antenna Array ◽  
Method Of Moments ◽  
Higher Order ◽  
Order Method ◽  
Radiation Characteristics ◽  
Gpu Cluster ◽  
Full Size ◽  
Communication Time ◽  
Asynchronous Communications ◽  
Higher Order Method

The parallel higher-order method of moments (HoMoM) with a GPU accelerated out-of-core LU solver is presented for analysis of radiation characteristics of a 1000-element antenna array over a full-size airplane. A parallel framework involving MPI and CUDA is adopted to ensure that the procedures run on a hybrid CPU/GPU cluster. An efficient two-level out-of-core scheme is designed to break the bottleneck of both GPU memory and physical memory when solving electrically large and complex problems. To hide communication time between CPU and GPU, asynchronous communications are chosen to enable overlapping between communication and computation. For large problems that cannot fit in GPU memory or physical memory, the two-level out-of-core LU solver is able to achieve a speedup of about 1.6x over the traditional out-of-core LU solver based on a highly optimized math library.

scholarly journals Efficient and Accurate Computational Electromagnetics Approach to Precipitation Particle Scattering Analysis Based on Higher-Order Method of Moments Integral Equation Modeling

2015 ◽  
Vol 32 (10) ◽  
pp. 1745-1758 ◽  
Author(s):  
E. Chobanyan ◽  
N. J. Šekeljić ◽  
A. B. Manić ◽  
M. M. Ilić ◽  
V. N. Bringi ◽  
...  
Keyword(s):  
Integral Equation ◽  
Method Of Moments ◽  
Matrix Method ◽  
Computational Electromagnetics ◽  
Higher Order ◽  
Equation Modeling ◽  
Particle Scattering ◽  
Order Method ◽  
Higher Order Method ◽  
Dda Method

AbstractA new full-wave computational electromagnetics (CEM) approach to precipitation particle scattering analysis based primarily on a higher-order method of moments (MoM) for solving surface integral equations (SIEs) is proposed, as an alternative and addition to the conventionally used tools in this area. This is a well-established CEM approach that has not been applied, evaluated, discussed, or compared with other approaches in the scattering analysis of precipitation particles so far. Several characteristic examples of scattering from precipitation particles of various shapes demonstrate the capabilities and potential of the presented numerical methodology, and discuss its advantages over both discrete dipole approximation (DDA) and -matrix methods in cases considered. In particular, it is shown that the higher-order MoM-SIE approach is much faster, more accurate, and more robust than the DDA method, and much more general and versatile than the -matrix method. In addition, the paper illustrates problems with the convergence of the DDA method in some cases with high-contrast dielectric materials and large electrical sizes of particles and with the convergence of the -matrix method in some cases with electrically large or geometrically complex (viz., with a large aspect ratio) particles. For simulations of continuously inhomogeneous scatterers (e.g., melting ice particles), a higher-order MoM volume integral equation (VIE) technique is used, as the study’s secondary methodology. The results also indicate the necessity for numerically rigorous and computationally efficient realistic precipitation particle modeling in weather scattering applications, which is becoming even more important as the sensor frequencies of radar/radiometric systems are increasing.

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