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In-Situ Verification of Aperture-Array Polarimetric Performance by Means of a Micro UAV: Preliminary Results on the LOFAR Low Band Antenna

Date Issued
2018
Author(s)
Paonessa, Fabio
•
Virone, Giuseppe
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Matteoli, Stefania
•
•
•
Wijnholds, Stefan J.
•
Lingua, Andrea M.
•
Addamo, Giuseppe
•
Peverini, Oscar A.
DOI
Abstract
In order to assess the polarimetric performance of phased arrays for radio astronomy, the Intrinsic Crosspolarization Ratio (IXR) can be adopted as a figure of merit. An innovative technique employing an Unmanned Aerial Vehicle (UAV) to measure the IXR of low-frequency instruments (VHF/UHF bands) has been recently exploited on a station of the Low Frequency Array (LOFAR) radio telescope. We present results from a spin flight measurement demonstrating 35 dB IXR in boresight, a value close to the performance limits of the current measurement system.
Coverage
2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC)
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1
Conferenece
2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC)
Conferenece place
Meloneras, Spain
Conferenece date
28 May-1 June, 2018
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