Radix-4 butterfly LSI in direct-imaging Waseda radio interferometer for a Pulsar survey

Naoki Tanaka, Tsuneaki Daishido, Hiroshi Takeuchi, Yukinori Akamine, Masaya Kuniyoshi, Taisei Suemitsu, Fumiyuki Fujii, Kentaro Gotoh, Tomoya Suzuki, Saori Mizuki, Keiju Mizuno, Koji Fukuoka, Masahiro Suzuki

    研究成果: Article

    2 引用 (Scopus)

    抄録

    In the Nyquist rate direct-imaging interferometer at Waseda University, a radix-4 butterfly LSI has been developed for the spatial-temporal (2+1)D FFT processor to survey pulsars. In (2+1)D FFT, the first 2D FFT is a 2D directional finding spatial FFT processing for an 8×8 pixel image. The second 1D FFT is a 1D spectral finding temporal FFT processing for a 64ch frequency analysis in each 64 pixels. Since fewer multipliers are required in radix-4 FFT than in radix-2 FFT, we have implemented radix-4 algorithms in the present butterfly LSI. This implementation, using 512 radix-4 butterfly LSIs, could reduce the circuit size of the parallel and pipeline (2+1)D FFT processor. Additional functions, such as shift registers, digital filters and post-process sections, are also included in the LSI for a radio interferometric pulsar survey.

    元の言語English
    ページ(範囲)447-455
    ページ数9
    ジャーナルPublications of the Astronomical Society of Japan
    52
    発行部数3
    出版物ステータスPublished - 2000

    Fingerprint

    radio interferometers
    large scale integration
    fast Fourier transformations
    interferometer
    butterfly
    pulsars
    radio
    pixel
    frequency analysis
    filter
    central processing units
    pixels
    shift registers
    digital filters
    multipliers
    interferometers

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    これを引用

    Tanaka, N., Daishido, T., Takeuchi, H., Akamine, Y., Kuniyoshi, M., Suemitsu, T., ... Suzuki, M. (2000). Radix-4 butterfly LSI in direct-imaging Waseda radio interferometer for a Pulsar survey. Publications of the Astronomical Society of Japan, 52(3), 447-455.

    Radix-4 butterfly LSI in direct-imaging Waseda radio interferometer for a Pulsar survey. / Tanaka, Naoki; Daishido, Tsuneaki; Takeuchi, Hiroshi; Akamine, Yukinori; Kuniyoshi, Masaya; Suemitsu, Taisei; Fujii, Fumiyuki; Gotoh, Kentaro; Suzuki, Tomoya; Mizuki, Saori; Mizuno, Keiju; Fukuoka, Koji; Suzuki, Masahiro.

    :: Publications of the Astronomical Society of Japan, 巻 52, 番号 3, 2000, p. 447-455.

    研究成果: Article

    Tanaka, N, Daishido, T, Takeuchi, H, Akamine, Y, Kuniyoshi, M, Suemitsu, T, Fujii, F, Gotoh, K, Suzuki, T, Mizuki, S, Mizuno, K, Fukuoka, K & Suzuki, M 2000, 'Radix-4 butterfly LSI in direct-imaging Waseda radio interferometer for a Pulsar survey', Publications of the Astronomical Society of Japan, 巻. 52, 番号 3, pp. 447-455.
    Tanaka N, Daishido T, Takeuchi H, Akamine Y, Kuniyoshi M, Suemitsu T その他. Radix-4 butterfly LSI in direct-imaging Waseda radio interferometer for a Pulsar survey. Publications of the Astronomical Society of Japan. 2000;52(3):447-455.
    Tanaka, Naoki ; Daishido, Tsuneaki ; Takeuchi, Hiroshi ; Akamine, Yukinori ; Kuniyoshi, Masaya ; Suemitsu, Taisei ; Fujii, Fumiyuki ; Gotoh, Kentaro ; Suzuki, Tomoya ; Mizuki, Saori ; Mizuno, Keiju ; Fukuoka, Koji ; Suzuki, Masahiro. / Radix-4 butterfly LSI in direct-imaging Waseda radio interferometer for a Pulsar survey. :: Publications of the Astronomical Society of Japan. 2000 ; 巻 52, 番号 3. pp. 447-455.
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    AU - Akamine, Yukinori

    AU - Kuniyoshi, Masaya

    AU - Suemitsu, Taisei

    AU - Fujii, Fumiyuki

    AU - Gotoh, Kentaro

    AU - Suzuki, Tomoya

    AU - Mizuki, Saori

    AU - Mizuno, Keiju

    AU - Fukuoka, Koji

    AU - Suzuki, Masahiro

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    KW - Pulsars: general

    KW - Techniques: interferometric

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