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In-situ optical fibre sensors for temperature and salinity monitoring 用于温度和盐度监测的原位光纤传感器
Europe Oceans 2005 Pub Date : 2005-06-20 DOI: 10.1109/OCEANSE.2005.1513243
L. Marrec, T. Bourgerette, E. Datin, N. Ferchaud, B. Pucel, L. Quetel, C. Renault, D. Tregoat
{"title":"In-situ optical fibre sensors for temperature and salinity monitoring","authors":"L. Marrec, T. Bourgerette, E. Datin, N. Ferchaud, B. Pucel, L. Quetel, C. Renault, D. Tregoat","doi":"10.1109/OCEANSE.2005.1513243","DOIUrl":"https://doi.org/10.1109/OCEANSE.2005.1513243","url":null,"abstract":"First results are presented on a distributed multi-sensor system based on optical fibre technology with applications foreseen in sea water monitoring. Preliminary modelling and experimental data demonstrate the ability to give continuously updated 3D information on at least two physical parameters (temperature and salinity) relevant to the management of sea water.","PeriodicalId":120840,"journal":{"name":"Europe Oceans 2005","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124742146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
A new dimensionality reduction method for seabed characterization: supervised Curvilinear Component Analysis 一种新的海底特征降维方法:监督曲线分量分析
Europe Oceans 2005 Pub Date : 2005-06-20 DOI: 10.1109/OCEANSE.2005.1511737
Hicham Lanaaya, Arnaud Martin, D. Aboutajdine, Ali Khenchaf
{"title":"A new dimensionality reduction method for seabed characterization: supervised Curvilinear Component Analysis","authors":"Hicham Lanaaya, Arnaud Martin, D. Aboutajdine, Ali Khenchaf","doi":"10.1109/OCEANSE.2005.1511737","DOIUrl":"https://doi.org/10.1109/OCEANSE.2005.1511737","url":null,"abstract":"In this paper, we present a new method for dimensionality reduction, called supervised Curvilinear Component Analysis, for the classification of sonar images task using support vector machines. Indeed it is important in many underwater applications to get tools that give automatically the kind of sediments. This method derives from the known method Curvilinear Component Analysis. It gives good results for data not highly overlapped. We have used this method after a feature extraction step based on wavelet decomposition applied to our sonar images database.","PeriodicalId":120840,"journal":{"name":"Europe Oceans 2005","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124855891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
PHD filter multi-target tracking in 3D sonar 三维声纳中PHD滤波多目标跟踪
Europe Oceans 2005 Pub Date : 2005-06-20 DOI: 10.1109/OCEANSE.2005.1511723
Daniel E. Clark, J. Bell, Y. D. Saint-Pern, Y. Pétillot
{"title":"PHD filter multi-target tracking in 3D sonar","authors":"Daniel E. Clark, J. Bell, Y. D. Saint-Pern, Y. Pétillot","doi":"10.1109/OCEANSE.2005.1511723","DOIUrl":"https://doi.org/10.1109/OCEANSE.2005.1511723","url":null,"abstract":"The Probability Hypothesis Density (PHD) Filter was developed as a method for tracking a time varying number of targets without data association. The first order statistical moment of the multiple target posterior distribution called the Probability Hypothesis Density which is represented by discrete samples or particles gives the expected locations of the targets. This property is used instead of the full multi-target posterior distribution as it is rcquires significantly less computation and particle tilter implementations have demonstrated lhe potential of the algorithm to be used for real-time tracking applications. In this article, an application of the Particle PHD Filler is demonstrated to track a variable number of objects in threedimensiond sonar images estimating both the number of targets and their locations. The number of targets is estimated at each iteration by computing the mass of lhe particle weights. The locations of the targets are determined by extracting peaks of the PHD which is a distinct task from the computation of the particles. Previous approaches have used the Expectation Maximisation (EM) algorithm to fit a Gaussian mixture model whose time complexity is quadratic in the number of targets which is not ideal for a real-time tracking appiication and so alternative clustering techniques are considered here. A comparison is made between the methods for the accuracy of estimation, robustness and the time taken.","PeriodicalId":120840,"journal":{"name":"Europe Oceans 2005","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121732861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 33
A study on the use of SAR polarimetric data to observe oil spills 利用SAR极化数据观测石油泄漏的研究
Europe Oceans 2005 Pub Date : 2005-06-20 DOI: 10.1109/OCEANSE.2005.1511709
M. Migliaccio, M. Tranfaglia
{"title":"A study on the use of SAR polarimetric data to observe oil spills","authors":"M. Migliaccio, M. Tranfaglia","doi":"10.1109/OCEANSE.2005.1511709","DOIUrl":"https://doi.org/10.1109/OCEANSE.2005.1511709","url":null,"abstract":"In this paper a new procedure to discriminate different surface films by means of SAR polarimetric data is proposed. SAR data were acquired on October 11, 1994 during SIR-C/X-SAR mission, named SRL-2. The dark features characterizing different surface films are analysed using eigenvalues and eigenvectors of the coherence matrix. Results of this study give rise to the conclusions that SAR polarimetric data are a key tool to discriminate oil spills from biogenic/anthropogenic surface films to reduce the number of false alarms.","PeriodicalId":120840,"journal":{"name":"Europe Oceans 2005","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121809055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Experimental study and numerical modelling of a cod-end 冷端实验研究与数值模拟
Europe Oceans 2005 Pub Date : 2005-06-20 DOI: 10.1109/OCEANSE.2005.1511677
D. Priour, G. Germain
{"title":"Experimental study and numerical modelling of a cod-end","authors":"D. Priour, G. Germain","doi":"10.1109/OCEANSE.2005.1511677","DOIUrl":"https://doi.org/10.1109/OCEANSE.2005.1511677","url":null,"abstract":"The selectivity of trawls is conditioned by the net structure and flow characteristics which substantially affect the fish behaviour and the catch geometry in the cod-end. With the aim of a better understanding of interaction in presence in these flexible structures, we first carried out an experimental study to determine and to analyse the flow over a cod-end. In a second part, we describe a Finite Element Method modelling devoted to flexible structures made of nets, cables and bars, such as trawls.","PeriodicalId":120840,"journal":{"name":"Europe Oceans 2005","volume":"3 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113967422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Characterisation of improved polyester fibres for offshore mooring lines 近海系泊缆绳用改良聚酯纤维的特性
Europe Oceans 2005 Pub Date : 2005-06-20 DOI: 10.1109/OCEANSE.2005.1513245
C. Lechat, A. Piant, A. Bunsell, P. Davies, B. Forest
{"title":"Characterisation of improved polyester fibres for offshore mooring lines","authors":"C. Lechat, A. Piant, A. Bunsell, P. Davies, B. Forest","doi":"10.1109/OCEANSE.2005.1513245","DOIUrl":"https://doi.org/10.1109/OCEANSE.2005.1513245","url":null,"abstract":"This paper describes tests performed to evaluate the properties of improved polyester fibres for marine rope applications. First the static and cyclic properties of single fibres have been measured. Then yarn and rope yarn specimens have been tested. Finally, sub-rope samples of 36 ton break load have been characterized. The data collected are now being used to validate rope performance analyses.","PeriodicalId":120840,"journal":{"name":"Europe Oceans 2005","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129875225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multibeam sub-bottom profiler: exploitation of experimental data 多波束海底剖面仪:实验数据的开发
Europe Oceans 2005 Pub Date : 2005-06-20 DOI: 10.1109/OCEANSE.2005.1511800
A. Pacault, G. Theuillon, J. Le Gac, X. Lurton, B. Langli
{"title":"Multibeam sub-bottom profiler: exploitation of experimental data","authors":"A. Pacault, G. Theuillon, J. Le Gac, X. Lurton, B. Langli","doi":"10.1109/OCEANSE.2005.1511800","DOIUrl":"https://doi.org/10.1109/OCEANSE.2005.1511800","url":null,"abstract":"The use of a SBP 120 multibeam sub-bottom profiler (Kongsberg Maritime) during recent sea trials enabled us to acquire data in various sedimentary areas and to test the influence of different acquisition parameters. In the first section of this article, we describe the SBP 120 main features. Studying the oblique beams, we then show that the recorded signal mainly comes from coherent reflection. The use of large arrays provides a high source level and increases the directivity index at emission and reception, but we show that to image complex structures, it can be interesting to limit the arrays' length and to use a less directive device. In the last section, we show preliminary results of the exploitation of SBP 120 data to characterize the geological environment.","PeriodicalId":120840,"journal":{"name":"Europe Oceans 2005","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129276299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
GAPS, combined USBL + INS + GPS tracking system for fast deployable & high accuracy multiple target positioning GAPS，结合USBL + INS + GPS跟踪系统，用于快速部署和高精度多目标定位
Europe Oceans 2005 Pub Date : 2005-06-20 DOI: 10.1109/OCEANSE.2005.1513270
F. Napolitano, F. Cretollier, H. Pelletier
{"title":"GAPS, combined USBL + INS + GPS tracking system for fast deployable & high accuracy multiple target positioning","authors":"F. Napolitano, F. Cretollier, H. Pelletier","doi":"10.1109/OCEANSE.2005.1513270","DOIUrl":"https://doi.org/10.1109/OCEANSE.2005.1513270","url":null,"abstract":"The common threat among MCM operations and concept is the need for a clear and concise battle space picture enabling the on-scene commander to maneuver naval forces from the sea into the littorals. The timely collection of data (REA) and accurate positioning of subsea targets must be possible anywhere in the world, in a potentially rapid approaching and hostile environment, in coastal regions where access is often limited. EXPLORA 05 is a live REA demonstration organised by the French Navy in Morgat bay (close to Brest, France) using subsea remote instrumentation. The iXSea GAPS (Global Acoustic Positioning System) has been used for tracking of several vehicles. In this paper we present it and demonstrate its attractive features for MCM/REA applications including fast deployable, high accuracy, plug and play and easy to use multiple targets positioning system. We also discuss several future new concepts and solutions for subsea positioning iXSea in currently developing, and how they contribute to solve positioning issues on the subsea battlefield.","PeriodicalId":120840,"journal":{"name":"Europe Oceans 2005","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129695026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
All Electric Ship electromagnetic signature. A twenty megawatts podded ship 全电动船电磁信号。一艘20兆瓦的吊舱船
Europe Oceans 2005 Pub Date : 2005-06-20 DOI: 10.1109/OCEANSE.2005.1511713
B. Lucas, H. Henocq, Trokourey Albert
{"title":"All Electric Ship electromagnetic signature. A twenty megawatts podded ship","authors":"B. Lucas, H. Henocq, Trokourey Albert","doi":"10.1109/OCEANSE.2005.1511713","DOIUrl":"https://doi.org/10.1109/OCEANSE.2005.1511713","url":null,"abstract":"Today, many ships, cruise liners and Navy vessels, use an electric podded propulsion. These \"All Electric Ships\" (AES) need an important electric power. Consequently, high currents in extremely low frequencies (ELFE), flow through cables and equipment. These alternative currents could generate important underwater electromagnetic field. We have to quantify the level of this field and its impact on the signature of this kind of ship. Then, GESMA carried out electromagnetic measurements using a multisensors underwater and autonomous facility named AMI. It was placed on the route of a few megawatts podded ship, at one hundred meters depth from the surface. We observed a non negligible radiated electric field.","PeriodicalId":120840,"journal":{"name":"Europe Oceans 2005","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125009562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Gabor atomic decomposition of Green's functions for geoacoustic inversion and segmentation of a shallow water environment 浅水环境地球声反演与分割的Gabor原子分解格林函数
Europe Oceans 2005 Pub Date : 2005-06-20 DOI: 10.1109/OCEANSE.2005.1513241
P. Oonincx, J. Hermand
{"title":"Gabor atomic decomposition of Green's functions for geoacoustic inversion and segmentation of a shallow water environment","authors":"P. Oonincx, J. Hermand","doi":"10.1109/OCEANSE.2005.1513241","DOIUrl":"https://doi.org/10.1109/OCEANSE.2005.1513241","url":null,"abstract":"This paper introduces a method that identifies acoustic transmission data with feature vectors for the segmentation of range-dependent shallow water areas. The measurement geometry consists of sonobuoy-like receivers drifting away from a fixed sound source. The data consist of the medium impulse response measured repeatedly along each buoy track (frequency-dependent Green's function). The feature vector entries are parameters obtained from a sparse, tree-based, matching pursuit decomposition of each response into Gabor atoms. The mutual distance of neighbor feature vectors is used to detect and localise main variations of the bottom geoacoustic properties and eventually isolate subareas of moderate variability. The method is tested with data from experiments of rapid environmental assessment (REA) ENVERSE 97-98.","PeriodicalId":120840,"journal":{"name":"Europe Oceans 2005","volume":"232 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131117137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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