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P8-13 Calibrating a phased array with holography: the ... · Calibrating a phased array with...

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Calibrating a phased array with holography: the LOFAR case Sander ter Veen, Michiel Brentjens, Mattia Mancini, Thomas Jürges, Dave Bordenave P8-13
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Page 1: P8-13 Calibrating a phased array with holography: the ... · Calibrating a phased array with holography: the LOFAR case Sander ter Veen, Michiel Brentjens, Mattia Mancini, Thomas

Calibrating a phased array with holography: the LOFAR case

Sander ter Veen, Michiel Brentjens, Mattia Mancini, Thomas Jürges, Dave Bordenave

P8-13

Page 2: P8-13 Calibrating a phased array with holography: the ... · Calibrating a phased array with holography: the LOFAR case Sander ter Veen, Michiel Brentjens, Mattia Mancini, Thomas

Recorded data: 481 beams simultaneously

P8-13

Page 3: P8-13 Calibrating a phased array with holography: the ... · Calibrating a phased array with holography: the LOFAR case Sander ter Veen, Michiel Brentjens, Mattia Mancini, Thomas

FFT => Image antennasolve phases at antenna position

Ok

Too little

Too much

Delay

P8-13


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