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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 (2012) In Technical Report LUTEDX/(TEAT-7223)/1-22/(2012) TEAT-7223.
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 origin of the flaws are not revealed. In this paper, radome diagnostic is performed by visualizing equivalent currents on a radome surface. We localize phase shifts, an effective insertion phase delay (IPD), caused by patches of dielectric tape attached to a radome surface. The IPD of one layer tape, 0.15 mm, is detected. Imaging results from three different far-field measurement series at 10 GHz are presented. The measured far field is related to the equivalent surface currents on 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 origin of the flaws are not revealed. In this paper, radome diagnostic is performed by visualizing equivalent currents on a radome surface. We localize phase shifts, an effective insertion phase delay (IPD), caused by patches of dielectric tape attached to a radome surface. The IPD of one layer tape, 0.15 mm, is detected. Imaging results from three different far-field measurement series at 10 GHz are presented. The measured far field is related to the equivalent surface currents on the radome surface by using a surface integral representation together with the extinction theorem. The problem is solved by a body of revolution method of moment (MoM) code utilizing a singular value decomposition (SVD) for regularization. (Less)
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Technical Report LUTEDX/(TEAT-7223)/1-22/(2012)
volume
TEAT-7223
pages
22 pages
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[Publisher information missing]
language
English
LU publication?
yes
id
18c9506e-e269-4596-9677-17e73a1bc4a9 (old id 3294499)
date added to LUP
2012-12-20 10:54:59
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2016-10-07 15:23:56
@misc{18c9506e-e269-4596-9677-17e73a1bc4a9,
  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 origin of the flaws are not revealed. In this paper, radome diagnostic is performed by visualizing equivalent currents on a radome surface. We localize phase shifts, an effective insertion phase delay (IPD), caused by patches of dielectric tape attached to a radome surface. The IPD of one layer tape, 0.15 mm, is detected. Imaging results from three different far-field measurement series at 10 GHz are presented. The measured far field is related to the equivalent surface currents on the radome surface by using a surface integral representation together with the extinction theorem. The problem is solved by a body of revolution method of moment (MoM) code utilizing a singular value decomposition (SVD) for regularization.},
  author       = {Persson, Kristin and Gustafsson, Mats and Kristensson, Gerhard and Widenberg, Björn},
  language     = {eng},
  pages        = {22},
  publisher    = {ARRAY(0x9d2baa8)},
  series       = {Technical Report LUTEDX/(TEAT-7223)/1-22/(2012)},
  title        = {Radome diagnostics - source reconstruction of phase objects with an equivalent currents approach},
  volume       = {TEAT-7223},
  year         = {2012},
}