Radiation from vertical dipole antennas, which are located over or under the surface of lossy earth, is analysed by the finite-difference time-domain (FDTD) method in cylindrical coordinates. A novel generalized perfectly matched layer (PML) has been developed and used for the truncation of the loss
Time-domain reconstruction of lossy objects using dipole antennas
✍ Scribed by Hui Zhou; Takashi Takenaka; Toshiyuki Tanaka
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 618 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
An iterative time‐domain algorithm for reconstructing three‐dimensional (3D) lossy objects using microwave data transmitted and collected by dipole antennas is presented. The electromagnetic and adjoint fields are calculated using the finite‐difference time‐domain (FDTD) method. Numerical examples show the algorithm can rebuild simultaneously from noise‐free and noisy data the permittivity and conductivity of a 3D lossy object settled in a lossless background. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 44: 238–243, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20598
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