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- W2371566596 abstract "Spectrometers for radio astronomy have provided an important tool for observations of interstellar molecular clouds,star forming regions,supernova remnants and other targets.The new scientific demands on astronomical observation include wider bandwidth,higher spectral resolution and capability for deep integration.These new technical aspects cannot be fulfilled by traditional analog backends such as acousto-optical spectrometer(AOS),so enhancing perfor- mance of backend is highly demanded.A new progress on the key technological features of radio spectroscopy is investigated and summarized in this paper.Based on the system integration of multi-bit ADC(capable of GHz sampling rate),parallel FFT IP cores running on large capac- ity FPGA,high-performance BUS technology,a novel FFT spectrometer for radio astronomy becomes possible.Digital FFT spectrometer which integrates these new technologies has wider bandwidth,finer spectral resolution,higher dynamic range and system stability in comparison with other types of spectrometer.Limited efforts show that this kind of digital technology may help us in developing sophisticated spectroscopes for radio astronomy.The same architecture can also be used for other applications in radio astronomy,such as the de-dispersion backend in pulsar observation as well as cross correlation in radio interferometers." @default.
- W2371566596 created "2016-06-24" @default.
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- W2371566596 date "2008-01-01" @default.
- W2371566596 modified "2023-09-26" @default.
- W2371566596 title "New Progress on Digital Spectrometer for Radio Astronomy" @default.
- W2371566596 hasPublicationYear "2008" @default.
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