Calibrating a phased array with holography: the LOFAR case

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

P8-13

Recorded data: 481 beams simultaneously

P8-13

FFT => Image antennasolve phases at antenna position

Ok

Too little

Too much

Delay

P8-13