Title:
DEVICE AND METHOD FOR CALCULATING BEHAVIOR OF LINEAR STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2022/097466
Kind Code:
A1
Abstract:
The objective of the present disclosure is to enable the behavior of a linear structure in water to be estimated. The present disclosure provides a device which: represents at least one parameter using a plurality of discrete values; estimates the behavior of a linear structure using each of the discrete values; acquires the behavior of the linear structure as detected using an optical fiber; calculates the likelihood of the predicted behavior of the linear structure and the acquired behavior of the linear structure; updates at least any one of the plurality of discrete values on the basis of the likelihood; and uses the updated plurality of discrete values to calculate the behavior of the linear structure.
Inventors:
MATSUI TAKASHI (JP)
NAKAJIMA KAZUHIDE (JP)
HANZAWA NOBUTOMO (JP)
WADA RYOTA (JP)
MURAYAMA HIDEAKI (JP)
NAKAJIMA KAZUHIDE (JP)
HANZAWA NOBUTOMO (JP)
WADA RYOTA (JP)
MURAYAMA HIDEAKI (JP)
Application Number:
PCT/JP2021/038481
Publication Date:
May 12, 2022
Filing Date:
October 18, 2021
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
UNIV TOKYO (JP)
UNIV TOKYO (JP)
International Classes:
G01B21/00; G01B21/22; G02B6/42
Foreign References:
| JP2006145388A | 2006-06-08 | |||
| JP2013505441A | 2013-02-14 |
Other References:
J. V. GRINDHEIM, I. REVAHUG AND E. PEDERSEN: "Utilizing the Ensemble Kalman Filter and Ensemble Kalman Smoother for Combined State and Parameter Estimation of a Three-Dimensional Towed Underwater Cable Model", JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING, vol. 139, no. 6, 1 January 2017 (2017-01-01), US , pages 061303 - 061303-8, XP009536512, ISSN: 0892-7219, DOI: 10.1115/1.4037173
KAZUYUKI NAKAMURA: "Understanding and predicting phenomena with uncertainty due to data assimilation and developing into modeling", RECORDS OF THE RESEARCH INSTITUTE FOR MATHEMATICAL SCIENCES, KYOTO UNIVERSITY, vol. 2057, 1 January 2017 (2017-01-01), pages 59 - 66, XP055931108, ISSN: 1880-2818
HIGUCHI TOMOYUKI, KAZUYUKI NAKAMURA: "Advanced online sensing through data assimilation", JOURNAL OF THE SOCIETY OF INSTRUMENT AND CONTROL ENGINEERS, vol. 51, no. 9, 10 September 2012 (2012-09-10), pages 800 - 807, XP055931111, ISSN: 0453-4662, DOI: 10.11499/sicejl.51.800
J. V. GRINDHEIMI. REVAHUGE. PEDERSEN: "Utilizing the ensemble kalman filter and ensemble kalman smoother for combined state and parameter estimation of a three dimensional towed underwater cable model", JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING, vol. 139, no. 6, 2017, pages 061303, XP009536512, DOI: 10.1115/1.4037173
KAZUYUKI NAKAMURA: "Understanding and predicting phenomena with uncertainty due to data assimilation and developing into modeling", RECORDS OF THE RESEARCH INSTITUTE FOR MATHEMATICAL SCIENCES, KYOTO UNIVERSITY, vol. 2057, 1 January 2017 (2017-01-01), pages 59 - 66, XP055931108, ISSN: 1880-2818
HIGUCHI TOMOYUKI, KAZUYUKI NAKAMURA: "Advanced online sensing through data assimilation", JOURNAL OF THE SOCIETY OF INSTRUMENT AND CONTROL ENGINEERS, vol. 51, no. 9, 10 September 2012 (2012-09-10), pages 800 - 807, XP055931111, ISSN: 0453-4662, DOI: 10.11499/sicejl.51.800
J. V. GRINDHEIMI. REVAHUGE. PEDERSEN: "Utilizing the ensemble kalman filter and ensemble kalman smoother for combined state and parameter estimation of a three dimensional towed underwater cable model", JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING, vol. 139, no. 6, 2017, pages 061303, XP009536512, DOI: 10.1115/1.4037173
Attorney, Agent or Firm:
OKADA, Kenji et al. (JP)
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