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http://dx.doi.org/10.5140/JASS.2002.19.4.327

A DESIGN STUDY OF THB 400MHZ WIDE-BAND DIGITAL AUTOCORRELATION SPECTROMETER  

이창훈 (한국천문연구원 대덕전파천문대)
김광동 (한국천문연구원 대덕전파천문대)
한석태 (한국천문연구원 대덕전파천문대)
김태성 (한국천문연구원 대덕전파천문대)
최한규 (서울대학교 전파천문대)
변도영 (서울대학교 전파천문대)
구본철 (서울대학교 전파천문대)
Publication Information
Journal of Astronomy and Space Sciences / v.19, no.4, 2002 , pp. 327-340 More about this Journal
Abstract
In this paper, we performed the design study of a wide-band digital autocorrelation spectrometer for the observation study of an extra-galaxy's spectral lines and the survey research of the special radio sources in field of the radio astronomy observational research. The autocorrelation spectrometer designed in this paper can be used to their spectrometer of any system because this spectrometer has a wide dynamic power and frequency range properties. In this system we use the aliasing sampling method to minimize the band loss. For the output signal of the correlator we can increase the signal processing speed using by a special DSP chip, the integration and the FFT using hardware, so this spectrometer can support the newest developed technique for the radio astronomy observation so called “On the fly” method.
Keywords
autocorrelation spectrometer; digital study; radio astronomy;
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