DocumentCode :
514225
Title :
Study of the invariants of the time-reversal operator for a dielectric cylinder using separate transmit and receive arrays: theory and experiments
Author :
Davy, Matthieu ; Minonzio, Jean-Gabriel
Author_Institution :
Lab. Ondes et Acoust., Univ. Denis Diderot Paris 7, Paris, France
fYear :
2009
fDate :
12-16 Oct. 2009
Firstpage :
1
Lastpage :
6
Abstract :
In this paper, the DORT method applies to scattering analysis with arrays of transceivers. A large dielectric cylinder is observed by separate transmit and receive arrays with microwaves. First, the decomposition of the scattered field into normal modes and projected harmonics is used to determine the theoretical time-reversal invariants of the Time Reversal Operator. In a second part, we experimentally study the time reversal invariants for various dielectric cylinders. A good agreement is shown between theory and experimental results. The DORT method is finally used in an inverse problem to determine the different parameters of the cylinder, especially permittivity, diameter or location.
Keywords :
electromagnetic wave scattering; inverse problems; microwave antenna arrays; receiving antennas; transmitting antennas; DORT method; dielectric cylinder; harmonics; inverse problem; microwaves; receive array; scattered field decomposition; scattering analysis; time reversal invariants; time-reversal operator; transceiver; transmit array; Acoustic scattering; Dielectrics; Electromagnetic scattering; Inverse problems; Linear antenna arrays; Microwave antenna arrays; Permittivity; Transceivers; Underwater acoustics; Vectors; DORT method; Time Reversal; dielectric cylinder; microwaves;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Radar Conference - Surveillance for a Safer World, 2009. RADAR. International
Conference_Location :
Bordeaux
Print_ISBN :
978-2-912328-55-7
Type :
conf
Filename :
5438440
Link To Document :
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