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Radome diagnostics - source reconstruction of phase objects with an equivalent currents approach

Persson, Kristin LU ; Gustafsson, Mats LU ; Kristensson, Gerhard LU and Widenberg, Björn (2014) In IEEE Transactions on Antennas and Propagation 62(4). p.2041-2051
Abstract
Radome diagnostics are acquired in the design process, the delivery control, and in performance verification of repaired and newly developed radomes. A measured near or far field may indicate deviations, e.g., increased side-lobe levels, but the origins of the flaws are not revealed. In this paper, radome diagnostics is performed by visualizing the equivalent surface currents on the 3D-radome body, illuminated from the inside. Three different far-field measurement series at 10 GHz are employed. The measured far field is related to the equivalent surface currents on the radome surface by using a surface integral representation. In addition, a surface integral equation is employed to ensure that the sources are located inside the radome.... (More)
Radome diagnostics are acquired in the design process, the delivery control, and in performance verification of repaired and newly developed radomes. A measured near or far field may indicate deviations, e.g., increased side-lobe levels, but the origins of the flaws are not revealed. In this paper, radome diagnostics is performed by visualizing the equivalent surface currents on the 3D-radome body, illuminated from the inside. Three different far-field measurement series at 10 GHz are employed. The measured far field is related to the equivalent surface currents on the radome surface by using a surface integral representation. In addition, a surface integral equation is employed to ensure that the sources are located inside the radome. Phase shifts, insertion phase delays (IPD), caused by patches of dielectric tape attached to the radome surface, are localized. Specifically, patches of various edge sizes (0.5-2.0 free-space wavelengths), and with the smallest thickness corresponding to a phase shift of a couple of degrees are imaged. (Less)
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organization
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type
Contribution to journal
publication status
published
subject
in
IEEE Transactions on Antennas and Propagation
volume
62
issue
4
pages
2041 - 2051
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000334744700028
  • scopus:84940230689
ISSN
0018-926X
DOI
10.1109/TAP.2014.2298534
language
English
LU publication?
yes
id
24abe8ff-1c13-420b-8d13-3a50ea00b5ec (old id 4248244)
date added to LUP
2014-01-21 10:56:59
date last changed
2017-11-19 03:51:38
@article{24abe8ff-1c13-420b-8d13-3a50ea00b5ec,
  abstract     = {Radome diagnostics are acquired in the design process, the delivery control, and in performance verification of repaired and newly developed radomes. A measured near or far field may indicate deviations, e.g., increased side-lobe levels, but the origins of the flaws are not revealed. In this paper, radome diagnostics is performed by visualizing the equivalent surface currents on the 3D-radome body, illuminated from the inside. Three different far-field measurement series at 10 GHz are employed. The measured far field is related to the equivalent surface currents on the radome surface by using a surface integral representation. In addition, a surface integral equation is employed to ensure that the sources are located inside the radome. Phase shifts, insertion phase delays (IPD), caused by patches of dielectric tape attached to the radome surface, are localized. Specifically, patches of various edge sizes (0.5-2.0 free-space wavelengths), and with the smallest thickness corresponding to a phase shift of a couple of degrees are imaged.},
  author       = {Persson, Kristin and Gustafsson, Mats and Kristensson, Gerhard and Widenberg, Björn},
  issn         = {0018-926X},
  language     = {eng},
  number       = {4},
  pages        = {2041--2051},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Antennas and Propagation},
  title        = {Radome diagnostics - source reconstruction of phase objects with an equivalent currents approach},
  url          = {http://dx.doi.org/10.1109/TAP.2014.2298534},
  volume       = {62},
  year         = {2014},
}