Single antenna microwave nulling using time-reversal techniques

Cepni, A.G.; Stancil, Daniel D.

doi:10.1109/mwsym.2005.1517050

Cited by 9 publications

(7 citation statements)

References 6 publications

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“…The proposed method is based on a form of active nulling, a topic that has received recent interest within the time-reversal community. 5,6 The developments are given in the framework of the scalar Helmholtz operator ٌ͑ 2 + k 0 2 ͒, where ٌ 2 is the Laplacian operator in three-dimensional space, k 0 represents the known wave number of the field in the background medium and G 0 ͑r, rЈ͒ is the known background Green's function pertinent to this partial differential operator for the boundary conditions relevant to the physical situation at hand, e.g., Sommerfeld's radiation condition. Within this framework, small scatterers are treated as "mathematical" point targets described as Dirac delta functions.…”

Section: Introductionmentioning

confidence: 99%

Noniterative analytical formula for inverse scattering of multiply scattering point targets

Marengo

Gruber

2006

The Journal of the Acoustical Society of America

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This paper derives, in the exact framework of multiple scattering theory for point targets, a noniterative analytical formula for the nonlinear inversion of the target scattering strengths from the scattering or response matrix that can be applied after the target positions have been estimated in a previous step via, e.g., time-reversal multiple signal classification or another approach. The new formula provides a noniterative analytical alternative to the iterative numerical solution approach for the same problem presented in a recent paper [A. J. Devaney, E. A. Marengo, and F. K. Gruber, "Time-reversal-based imaging and inverse scattering of multiply scattering point targets," J. Acoust. Soc. Am. 118, 3129-3138 (2005)]. The two methods (noniterative versus iterative) are comparatively investigated with two numerical examples.

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Section: Introductionmentioning

confidence: 99%

Noniterative analytical formula for inverse scattering of multiply scattering point targets

Marengo

Gruber

2006

The Journal of the Acoustical Society of America

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“…There are two implementation schemes for time reversal: single antenna [8] and array antenna in the receiving side. Single antenna works only in a multipath environment which provides different 'perspectives' of the source.…”

Section: Introductionmentioning

confidence: 99%

Source localization using time reversal in urban environments: A ray tracing approach

Bibb

Yun

Iskander

2014

2014 IEEE Antennas and Propagation Society International Symposium (APSURSI)

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“…TR has also been employed in other areas of research, e.g., the imaging of targets in complex environments 6,7 and microwave nulling. 8 This research focuses on the characterization of TR with single antenna systems. To achieve energy focusing using a single antenna system, wideband signals and multipath environments are required.…”

Section: Introductionmentioning

confidence: 99%