Reconstruction and visualization of equivalent currents on a radome using an integral representation formulation
(2010) In Progress In Electromagnetics Research B 20. p.6590 Abstract
 In this paper an inverse source problem is investigated. The measurement setup is a reflector antenna covered by a radome. Equivalent currents are reconstructed on a surface shaped as the radome in order to diagnose the radome's interaction with the radiated field. To tackle this inverse source problem an analysis of a fullwave integral representation, with the equivalent currents as unknowns, is used. The extinction theorem and its associated integral equation ensure that the reconstructed currents represent sources within the radome. The axially symmetric experimental setup reduces the computational complexity of the problem. The resulting linear system is inverted by using a singular value decomposition. We visualize how the presence... (More)
 In this paper an inverse source problem is investigated. The measurement setup is a reflector antenna covered by a radome. Equivalent currents are reconstructed on a surface shaped as the radome in order to diagnose the radome's interaction with the radiated field. To tackle this inverse source problem an analysis of a fullwave integral representation, with the equivalent currents as unknowns, is used. The extinction theorem and its associated integral equation ensure that the reconstructed currents represent sources within the radome. The axially symmetric experimental setup reduces the computational complexity of the problem. The resulting linear system is inverted by using a singular value decomposition. We visualize how the presence of the radome alters the components of the equivalent currents. The method enables us to determine the phase shift of the field due to the transmission of the radome, i.e., the IPD (insertion phase delay). Also, disturbances due to defects, not observable in the measured near field, are localized in the equivalent currents. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/record/1578517
 author
 Persson, Kristin ^{LU} ; Gustafsson, Mats ^{LU} and Kristensson, Gerhard ^{LU}
 organization
 publishing date
 2010
 type
 Contribution to journal
 publication status
 published
 subject
 keywords
 inverse source problem, integral representation, radome diagnosis, nearfield transformation, extinction theorem
 in
 Progress In Electromagnetics Research B
 volume
 20
 pages
 65  90
 publisher
 EMW Publishing
 external identifiers

 Scopus:77951881093
 ISSN
 19376472
 DOI
 10.2528/PIERB10012109
 project
 Teorel: Radomes and frequency selective surfaces (FMV)
 language
 English
 LU publication?
 yes
 id
 82881e26f54445f48811feec2e342482 (old id 1578517)
 date added to LUP
 20100318 15:48:30
 date last changed
 20170101 07:55:35
@article{82881e26f54445f48811feec2e342482, abstract = {In this paper an inverse source problem is investigated. The measurement setup is a reflector antenna covered by a radome. Equivalent currents are reconstructed on a surface shaped as the radome in order to diagnose the radome's interaction with the radiated field. To tackle this inverse source problem an analysis of a fullwave integral representation, with the equivalent currents as unknowns, is used. The extinction theorem and its associated integral equation ensure that the reconstructed currents represent sources within the radome. The axially symmetric experimental setup reduces the computational complexity of the problem. The resulting linear system is inverted by using a singular value decomposition. We visualize how the presence of the radome alters the components of the equivalent currents. The method enables us to determine the phase shift of the field due to the transmission of the radome, i.e., the IPD (insertion phase delay). Also, disturbances due to defects, not observable in the measured near field, are localized in the equivalent currents.}, author = {Persson, Kristin and Gustafsson, Mats and Kristensson, Gerhard}, issn = {19376472}, keyword = {inverse source problem,integral representation,radome diagnosis,nearfield transformation,extinction theorem}, language = {eng}, pages = {6590}, publisher = {EMW Publishing}, series = {Progress In Electromagnetics Research B}, title = {Reconstruction and visualization of equivalent currents on a radome using an integral representation formulation}, url = {http://dx.doi.org/10.2528/PIERB10012109}, volume = {20}, year = {2010}, }