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3 July 2000Gigabit digital filter for radio astronomy observations
1Oki Electric Industry Co., Ltd. (Japan) 2National Astronomical Observatory (Japan) 3National Astronomical Observatory and Univ. of Electrommunications (Japan)
The gigabit digital filter prototype has been developed with the FPGA (FIeld Programmable Gate Array) for the radio astronomical observation. The digital filtering techniques enables a variety of observing modes defined on the data acquisition system, even with a fixed sampling frequency A/D converter. In this study, the principle of gigabit digital filter design is described in detail, parallel processing design of a FIR (Finite Inpulse Response) filter is presented, and the results of the test manufacturing are shown.
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Kazuyuki Kawakami, Kensuke Ozeki, Noriyuki Kawaguchi, Satoru Iguchi, Tamio Hashimoto, "Gigabit digital filter for radio astronomy observations," Proc. SPIE 4015, Radio Telescopes, (3 July 2000); https://doi.org/10.1117/12.390463