Electromagnetic Scattering by Mixed Conducting/Dielectric Objects Using Higher-Order Mom

Wang, Shaogang; Guan, Xin; Wang, Dangwei; Ma, Xiaochen; Su, Yi Long

doi:10.2528/pier06092101

Cited by 48 publications

(29 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Method of moments is a strict low-frequency algorithm, which has been widely used in the field of electromagnetics [15][16][17][18][19]. The employment of MoM as a part of optimization algorithm can obrain more precise solution for its ability to take the mutual coupling into account.…”

Section: Methods Of Moments and Fitness Functionmentioning

confidence: 99%

Low RCS Dipole Array Synthesis Based on Mom-Pso Hybrid Algorithm

Wang¹,

Gong²,

Zhang³

et al. 2009

PIER

View full text Add to dashboard Cite

Abstract-In this paper, a hybrid algorithm combined method of moments (MoM) with particle swarm optimization (PSO) is used to realize low radar cross section (RCS) array synthesis. Both the scattering factor and the radiation factor are involved in the proposed objective function to achieve the promising dipole array with a reduced RCS and satisfied radiation performance. To improve the optimization efficiency, radiation constraint conditions are adopted to avoid unnecessary scattering calculation. The symmetric matrix and block treatment are also used to fill the MoM impedance matrix. The optimization results show that the proposed algorithm is able to achieve RCS reduction of 5.5 dB for dipole array.

show abstract

Section: Methods Of Moments and Fitness Functionmentioning

confidence: 99%

Low RCS Dipole Array Synthesis Based on Mom-Pso Hybrid Algorithm

Wang¹,

Gong²,

Zhang³

et al. 2009

PIER

View full text Add to dashboard Cite

show abstract

“…For the sake of optimal performance, High-Order MoM (HO-MoM), involving high order polynomial functions, has been intensively explored for more than a decade [2,3,4,5]. In many configurations, the relative acceleration with respect to the basic MoM has been evaluated [6].…”

Section: Introductionmentioning

confidence: 99%

Optimal High-Order Method of Moment combined with NURBS for the scattering by a 2D cylinder.

Khairi

Coatanhay

Khenchaf³

2013

AEM

View full text Add to dashboard Cite

show abstract

“…Method of moments (MoM) is one of the most widely used numerical methods in solving electromagnetic (EM) integral equations for EM scattering problems [1][2][3]. In the MoM scheme, it is commonly recognized that the discretization for an electrically small or medium geometry is about ten unknowns per wavelength if the general basis functions such as pulse and triangular shape functions are used.…”

Section: Introductionmentioning

confidence: 99%

A Stable Integral Equation Solver for Electromagnetic Scattering by Large Scatterers With Concave Surface

Tong¹

2007

PIER

View full text Add to dashboard Cite

Abstract-Electromagnetic scattering by electrically large scatterers usually requires a large number of unknowns. To reduce the matrix size, one expects to choose a small sampling rate for the unknown function. In the method of moments (MoM) scheme, this rate is about 10 unknowns per wavelength for electrically small or medium scatterers. However, this rate may not work well for electrically large scatterers with a concave surface. The concave area on the scatter is observed to be the oscillatory part in the solution domain. The oscillation property requires more samplings to eliminate the numerical noises. The multiscalets with a multiplicity of two are higher-order bases. It is shown that the multiscalets are more suitable to represent the unknown function with oscillatory characteristic. Furthermore, the testing scheme under the discrete Sobolev-type inner product allows the MoM have the derivative sampling which enhances the tracking quality of the multiscalets further. Numerical Examples of scattering by 1000 and 1024 wavelength 2D scatterers demonstrate that the use of multiscalets in the MoM can keep the same discretization size for electrically large scatterers as for electrically small scatterers without losing the accuracy of the solution. In contrast, the traditional MoM and Nyström method require the finer discretization scheme if achieving a stable solution.

show abstract

Electromagnetic Scattering by Mixed Conducting/Dielectric Objects Using Higher-Order Mom

Cited by 48 publications

References 15 publications

Low RCS Dipole Array Synthesis Based on Mom-Pso Hybrid Algorithm

Low RCS Dipole Array Synthesis Based on Mom-Pso Hybrid Algorithm

Optimal High-Order Method of Moment combined with NURBS for the scattering by a 2D cylinder.

A Stable Integral Equation Solver for Electromagnetic Scattering by Large Scatterers With Concave Surface

Contact Info

Product

Resources

About