Online Reconstruction of Drifting Underwater Ice Topography: The 2D case
Abstract An online estimation design for a drifting two dimensional ice topography is presented. Under the assumption that the topography can be accurately represented by a truncated Fourier series, and given a moving window of measurements along the topography, an observer design is proposed to est...
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crwiley:10.1002/asjc.1088 2024-06-02T08:07:31+00:00 Online Reconstruction of Drifting Underwater Ice Topography: The 2D case Jørgensen, Ulrik Skjetne, Roger Centre for Autonomous Marine Operations and Systems KMB Arctic DP 2015 http://dx.doi.org/10.1002/asjc.1088 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fasjc.1088 https://onlinelibrary.wiley.com/doi/pdf/10.1002/asjc.1088 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/asjc.1088 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ Asian Journal of Control volume 17, issue 5, page 1509-1521 ISSN 1561-8625 1934-6093 journal-article 2015 crwiley https://doi.org/10.1002/asjc.1088 2024-05-03T11:22:18Z Abstract An online estimation design for a drifting two dimensional ice topography is presented. Under the assumption that the topography can be accurately represented by a truncated Fourier series, and given a moving window of measurements along the topography, an observer design is proposed to estimate the parameters of the model. The chosen method ensures an online cutoff of higher wave numbers in the spectrum representing the topography such that sufficient data compression is achieved for transmitting the model parameters through a limited hydroacoustic communication channel. This allows online reconstruction of the underwater drifting ice topography at a remote operation center. The observer is shown to be uniformly globally exponentially stable under a persistency of excitation condition. For comparison, a design based on B‐spline basis functions is also presented. The effectiveness of the estimation algorithm is verified on a set of real ice draft measurements taken from the underside of an ice sheet off the coast of Greenland. Article in Journal/Newspaper Greenland Ice Sheet Wiley Online Library Greenland Asian Journal of Control 17 5 1509 1521 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract An online estimation design for a drifting two dimensional ice topography is presented. Under the assumption that the topography can be accurately represented by a truncated Fourier series, and given a moving window of measurements along the topography, an observer design is proposed to estimate the parameters of the model. The chosen method ensures an online cutoff of higher wave numbers in the spectrum representing the topography such that sufficient data compression is achieved for transmitting the model parameters through a limited hydroacoustic communication channel. This allows online reconstruction of the underwater drifting ice topography at a remote operation center. The observer is shown to be uniformly globally exponentially stable under a persistency of excitation condition. For comparison, a design based on B‐spline basis functions is also presented. The effectiveness of the estimation algorithm is verified on a set of real ice draft measurements taken from the underside of an ice sheet off the coast of Greenland. |
author2 |
Centre for Autonomous Marine Operations and Systems KMB Arctic DP |
format |
Article in Journal/Newspaper |
author |
Jørgensen, Ulrik Skjetne, Roger |
spellingShingle |
Jørgensen, Ulrik Skjetne, Roger Online Reconstruction of Drifting Underwater Ice Topography: The 2D case |
author_facet |
Jørgensen, Ulrik Skjetne, Roger |
author_sort |
Jørgensen, Ulrik |
title |
Online Reconstruction of Drifting Underwater Ice Topography: The 2D case |
title_short |
Online Reconstruction of Drifting Underwater Ice Topography: The 2D case |
title_full |
Online Reconstruction of Drifting Underwater Ice Topography: The 2D case |
title_fullStr |
Online Reconstruction of Drifting Underwater Ice Topography: The 2D case |
title_full_unstemmed |
Online Reconstruction of Drifting Underwater Ice Topography: The 2D case |
title_sort |
online reconstruction of drifting underwater ice topography: the 2d case |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1002/asjc.1088 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fasjc.1088 https://onlinelibrary.wiley.com/doi/pdf/10.1002/asjc.1088 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/asjc.1088 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Asian Journal of Control volume 17, issue 5, page 1509-1521 ISSN 1561-8625 1934-6093 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1002/asjc.1088 |
container_title |
Asian Journal of Control |
container_volume |
17 |
container_issue |
5 |
container_start_page |
1509 |
op_container_end_page |
1521 |
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1800752612118626304 |