The minimum spanning tree problem in the phase calibration for the spatial FFT interferometer

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

The minimum spanning tree problem in the phase calibration for the spatial FFT interferometer

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Achieving a Nyquist-rate direct-imaging observation using a spatial FFT interferometer, instrumental phase errors in transmission lines must be calibrated before the observation. We improved the phase-calibrating system in the Waseda FFT interferometer by increasing the number of simultaneous obtainable fringe baselines from 84 to 128, and using the algorithm of the minimum spanning tree problem in graph theory. As a result, the main-beam intensity of the interferometer became 1.6 times on average.

Original language	English
Pages (from-to)	267-273
Number of pages	7
Journal	Publications of the Astronomical Society of Japan
Volume	52
Issue number	2
Publication status	Published - 2000

Keywords

Graph theory
Instrumentation: interferometers
Methods: data analysis
Surveys

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Cite this

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abstract = "Achieving a Nyquist-rate direct-imaging observation using a spatial FFT interferometer, instrumental phase errors in transmission lines must be calibrated before the observation. We improved the phase-calibrating system in the Waseda FFT interferometer by increasing the number of simultaneous obtainable fringe baselines from 84 to 128, and using the algorithm of the minimum spanning tree problem in graph theory. As a result, the main-beam intensity of the interferometer became 1.6 times on average.",

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language = "English",

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T1 - The minimum spanning tree problem in the phase calibration for the spatial FFT interferometer

AU - Takeuchi, Hiroshi

AU - Akamine, Yukinori

AU - Fujii, Fumiyuki

AU - Kuniyoshi, Masaya

AU - Suemitsu, Taisei

AU - Gotoh, Kentaro

AU - Mizuki, Saori

AU - Mizuno, Keiju

AU - Suzuki, Tomoya

AU - Fukuoka, Kohji

AU - Tanaka, Naoki

AU - Daishido, Tsuneaki

PY - 2000

Y1 - 2000

N2 - Achieving a Nyquist-rate direct-imaging observation using a spatial FFT interferometer, instrumental phase errors in transmission lines must be calibrated before the observation. We improved the phase-calibrating system in the Waseda FFT interferometer by increasing the number of simultaneous obtainable fringe baselines from 84 to 128, and using the algorithm of the minimum spanning tree problem in graph theory. As a result, the main-beam intensity of the interferometer became 1.6 times on average.

AB - Achieving a Nyquist-rate direct-imaging observation using a spatial FFT interferometer, instrumental phase errors in transmission lines must be calibrated before the observation. We improved the phase-calibrating system in the Waseda FFT interferometer by increasing the number of simultaneous obtainable fringe baselines from 84 to 128, and using the algorithm of the minimum spanning tree problem in graph theory. As a result, the main-beam intensity of the interferometer became 1.6 times on average.

KW - Graph theory

KW - Instrumentation: interferometers

KW - Methods: data analysis

KW - Surveys

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M3 - Article

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SN - 0004-6264

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EP - 273

JO - Publication of the Astronomical Society of Japan

JF - Publication of the Astronomical Society of Japan

IS - 2

ER -

The minimum spanning tree problem in the phase calibration for the spatial FFT interferometer

Abstract

Keywords

ASJC Scopus subject areas

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