A high speed digital autocorrelation spectrometer for millimetre astronomy

Details A high speed digital autocorrelation spectrometer for millimetre astronomy A high speed digital autocorrelation spectrometer for millimetre astronomy

Sep 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jphe....8..786p&link_type=abstract

Journal of Physics, Part E - Scientific Instruments, vol. 8, Sept. 1975, p. 786-789.

Mathematics

Logic

6

Astronomical Spectroscopy, Autocorrelation, Digital Techniques, Millimeter Waves, Radio Astronomy, Spectrometers, Bandwidth, Block Diagrams, Design Analysis, Transistor Logic

Scientific paper

The paper describes a high speed digital autocorrelation spectrometer suitable for use as a sensitive receiver in millimeter spectral line astronomy. The instrument has 32 channels and employs the one-bit digitization technique to analyze spectra contained in bandwidths available between 0.94 and 30 MHz. Schottky clamped transistor-transistor logic is used in the digital processor to permit a maximum sampling rate of 60 MHz. Stability tests indicate that for 1000-sec integration times the receiver sensitivity is within 15% of its theoretical value at all available bandwidths. The receiver is presently being used to study emission at 22.2 GHz from interstellar water molecules.

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