An interference-excising correlator for radio astronomy

Details An interference-excising correlator for radio astronomy An interference-excising correlator for radio astronomy

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jrasc..72..310k&link_type=abstract

Journal of the Royal Astronomical Society of Canada, vol. 72, Dec. 1978, p. 310-318. Research supported by the National Researc

Astronomy and Astrophysics

Astronomy

1

Correlators, High Frequencies, Microprocessors, Radio Astronomy, Radio Frequency Interference, Background Radiation, Fast Fourier Transformations, Normal Density Functions

Scientific paper

A correlating interferometer is described that operates in the HF communications band in the presence of levels of narrow-band radio interference that would normally make flux-density measurements impossible. Satisfactory operation of the correlator is achieved by using a microprocessor programmed to examine the FFT cross-power spectrum of the received signals in such a way as to permit the on-line identification, and the subsequent excision from the data, of interference appearing within the system bandwidth. Some experimental records are presented that illustrate the relative improvements possible with interference excising.

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