One-dimensional imaging with the Waseda FFT radio telescope

Details One-dimensional imaging with the Waseda FFT radio telescope One-dimensional imaging with the Waseda FFT radio telescope

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasj...45..477n&link_type=abstract

PASJ: Publications of the Astronomical Society of Japan (ISSN 0004-6264), vol. 45, no. 3, p. 477-485.

Astronomy and Astrophysics

Astronomy

7

Image Processing, Radio Sources (Astronomy), Radio Telescopes, Fourier Transformation, Sky Surveys (Astronomy)

Scientific paper

A sixty-four-element fast Fourier transform (FFT) type radio interferometer has been constructed at Waseda University. Using eight east-west elements, eight 1D beams were formed. The analog phase errors in the baseband signals of 64 channels were measured by fringe observations, and were corrected by a digital processor. Images of two radio sources were obtained in transit observation, when they passed the fixed eight fan-beams. This is the real-time 1D imaging of eight pixels. The present image forming technique could be a basis for 2D imaging. We report the frontend system and its performance in the observation.

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