Corrections for the effects of a radome on antenna surfacemeasurements made by microwave holography
Rogers, A.E.E.; Barvainis, R.; Charpentier, P.J.; Corey, B.E.
Antennas and Propagation, IEEE Transactions on
Volume 41, Issue 1, Jan 1993 Page(s):77 - 84
Digital Object Identifier 10.1109/8.210118
Summary:Measurements of the surface deviations of a parabolic antenna by
microwave holography have been corrected for the effects of an enclosing
radome. The largest correction, which is due to diffraction from the
metal space frame, is made by using a model computed from the radome
structure. This model accounts for the changing diffraction as the
antenna is scanned during the interferometric mapping of the complex
beam pattern. Correction for reflections from the radome panels is made
by simultaneously measuring the beam pattern at multiple frequencies to
provide delay discrimination to reject antenna sidelobes generated by
multiple reflections which arrive with delays different from that of the
main beam
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