Electromagnetic Scattering By an Object in Relativistic Translational Motion

Cupis, P. De; Gerosa, Gino; Schettini, Giuseppe

doi:10.1163/156939300x00969

Cited by 24 publications

(8 citation statements)

References 13 publications

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“…Note that the fuselage Doppler [11][12][13][14] caused by radar-target vis-à-vis movement during the encounter process is beyond the scope of this paper. By adopting Lorenz transformation to translate plane waves between two set of reference frames, [11] originally includes relativistic Doppler effects on the scattered waves.…”

Section: Specific Consideration In Target-seeker Encounter Simulationmentioning

confidence: 99%

Near-field EM scattering calculation for target-seeker encounter simulation

Sui

2010

SPIE Proceedings

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By introducing the concept of distinct wave propagation vector (DWPV), this paper proposes formulations of near-field version of Physical Optics (NFPO) and Michaeli's equivalent edge currents (NFEEC) to be adaptable for near-field electromagnetic (EM) scattering computation. Moreover, this method can be easily extended to other high-frequency scattering prediction techniques, which is attractive for applications such as target-seeker encounter simulation and others. We arrive at exactly the same formula for deriving the DWPV as yielded in Legault's work. While Legault presented more rigorous mathematical formulation and phase error analysis, this paper provides an alternative interpretation of the key formula based on the DWPV concept, which is much easier to understand.

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Section: Specific Consideration In Target-seeker Encounter Simulationmentioning

confidence: 99%

Near-field EM scattering calculation for target-seeker encounter simulation

Sui

2010

SPIE Proceedings

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“…There have been many studies investigating this issue. Some studies focus on the derivation of the theoretical solutions for the EM scattering by perfect conductors in uniform translational motion [1][2][3][4][5][6][7][8][9][10][11], some on the EM scattering by linearly vibrating objects [12][13][14], some on the simulation of the scattered EM fields from perfect planes moving and vibrating [15][16][17], and one on a moving dielectric half-space [18]. Among them, Harfoush et al provided computational results, in addition to the theoretical analysis, by using the finite-difference time-domain (FDTD) technique, in which both Faraday's and Ampere's laws were employed as aides to respectively approximate the magnetic and electric fields immediately next to the moving surface whenever the surface travels away from the grid point [3].…”

Section: Introductionmentioning

confidence: 99%

Simulation of Scattered Em Fields From Rotating Cylinder Using Passing Center Swing Back Grids Technique in Two Dimensions

Ho¹

2009

PIER

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Abstract-In this paper, a new numerical technique, passing center swing back grids (PCSBG's) for the resolution of the grid distortion difficulty due to the rotational motion of objects is introduced. This proposed swing-back-grids approach alongside of the method of characteristics (MOC) is developed to solve EM scattering problems featured with rotating objects. The feasibility of such combination is apparent from the fact that MOC defines all field quantities in the centroid of the grid cell. The scattered EM fields from a rotating circular cylinder under the excitation of an EM pulse are predicted in two dimensions and the electric field distributions recorded at several time instances are demonstrated. In order to confirm that the cylinder is rotating and scattering EM fields simultaneously, the circular cylinder is uniformly divided into an even number of slices with one perfect reflector and one non-reflector alternatively since a rotating circular cylinder causes no relativistic effects.

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“…Many studies providing theoretical solutions and computational results for problems involved with moving or oscillating objects [1][2][3][4][5][6][7][8][9][10][11][12][13] or rotating objects [14,15] can be easily found. Harfoush et al adapted the finite-difference time-domain (FDTD) technique for simulating electromagnetic wave scattering from moving surfaces.…”

Section: Introductionmentioning

confidence: 99%

2-Dal Simulation of Em Fields Radiated by Rotating Cylinder Carrying Surface Currents Using Passing Center Swing Back Grids Technique

Ho¹

2009

PIER Letters

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Abstract-The passing center swing back grids (PCSBG) technique, in conjunction with the method of characteristics (MOC), was proposed to model electromagnetic problems featured with rotating objects. The drive of this proposal lays mainly on the fact that MOC defines all field components in the center of grid cell. Its practicability was validated by exhibiting the radiated EM fields from a rotating cylinder which carries surface currents with Gaussian profile and flowing in the axial direction. To clearly demonstrate that the cylinder is rotating and radiating EM fields simultaneously, the following arrangements were made. The cylinder may be equally sliced into an even number of segments that are with and without currents alternatively since a rotating circular cylinder yields no relativistic effects. The computational results showed that the radiated electromagnetic fields bear vortex structures as the cause of rotating cylinder, which serves as the evidences that PCSBG works properly.

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Electromagnetic Scattering By an Object in Relativistic Translational Motion

Cited by 24 publications

References 13 publications

Near-field EM scattering calculation for target-seeker encounter simulation

Near-field EM scattering calculation for target-seeker encounter simulation

Simulation of Scattered Em Fields From Rotating Cylinder Using Passing Center Swing Back Grids Technique in Two Dimensions

2-Dal Simulation of Em Fields Radiated by Rotating Cylinder Carrying Surface Currents Using Passing Center Swing Back Grids Technique

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