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Evolutions of Partial and Global Resonances in Transient Electromagnetic Scattering

Hoi Shun Lui (Institutionen för signaler och system, Biomedicinsk elektromagnetik) ; Nicholas Shuley
IEEE Antennas and Wireless Propagation Letters Vol. 7 (2008), p. 435 - 439.
[Artikel, refereegranskad vetenskaplig]

Time-frequency (TF) analysis of a transient electromagnetic signature from a radar target is conducted. Using an example of a bent wire target, it is demonstrated that the evolution of partial resonances in the early time period and the turn-on time of the global resonances in the late time period can be clearly observed in the TF domain. This demonstrates that the hybrid wavefront singularity expansion method (HWSEM) model better describes the scattering physics than the original singularity expansion method (SEM). Furthermore, occurrence of various scattering mechanisms and their interactions are clearly revealed and thus TF analysis can be considered as an important alternative means of studying transient scattering, especially for complex targets from which analytical solutions are usually not available



Denna post skapades 2009-01-16.
CPL Pubid: 88091

 

Institutioner (Chalmers)

Institutionen för signaler och system, Biomedicinsk elektromagnetik

Ämnesområden

Elektroteknik

Chalmers infrastruktur