Application of independent component analysis to the iKAGRA data
- 주제(기타) Physics, Multidisciplinary
- 주제(기타) Physics, Particles & Fields
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H. P. M.] Sejong Univ, Dept Phys & Astron, Seoul 143747, South Korea; [Yoon, T. H.] Korea Univ, Dept Phys, Seoul 02841, South Korea; [Zhu, Z-H] Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
- 등재 SCIE, SCOPUS
- OA유형 Green Submitted, Green Accepted, Green Published, gold
- 발행기관 OXFORD UNIV PRESS INC
- 발행년도 2020
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000174618
- 본문언어 영어
- Published As http://dx.doi.org/10.1093/ptep/ptaa056
초록/요약
We apply independent component analysis (ICA) to real data from a gravitational wave detector for the first time. Specifically, we use the iKAGRA data taken in April 2016, and calculate the correlations between the gravitational wave strain channel and 35 physical environmental channels. Using a couple of seismic channels which are found to be strongly correlated with the strain, we perform ICA. Injecting a sinusoidal continuous signal in the strain channel, we find that ICA recovers correct parameters with enhanced signal-to-noise ratio, which demonstrates the usefulness of this method. Among the two implementations of ICA used here, we find the correlation method yields the optimal results for the case of environmental noise acting on the strain channel linearly.
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