首页 > 最新文献

OCEANS 2019 - Marseille最新文献

英文 中文
Fishing Spot Detection Using Sea Water Temperature Pattern by Nonlinear Clustering 基于非线性聚类的海水温度模式渔点检测
Pub Date : 2019-06-17 DOI: 10.1109/OCEANSE.2019.8867301
T. Shimura, Motoharu Sonogashira, Hidekazu Kasahara, M. Iiyama
Determining fishing spots is an important decision-making for fishery. Fishers use environmental pattern information such as tide and vortex, and this process can be thought of as a good fishing spot determination problem from sea water temperature patterns. In this paper, we address this problem by a machine learning approach. Following an assumption that sea water temperature patterns of good fishing spots form some clusters, we discover these clusters and construct a classifier that discriminates whether an input sea water temperature pattern corresponds to good fishing spots clusters. We evaluated the effectiveness of our method using fishery data.
渔点的确定是渔业的重要决策。渔民利用潮汐和漩涡等环境模式信息,这个过程可以被认为是一个很好的从海水温度模式确定渔点的问题。在本文中,我们通过机器学习方法解决了这个问题。假设好渔点的海水温度模式形成一些集群,我们发现这些集群,并构建一个分类器来判别输入的海水温度模式是否与好渔点集群相对应。我们使用渔业数据评估了我们的方法的有效性。
{"title":"Fishing Spot Detection Using Sea Water Temperature Pattern by Nonlinear Clustering","authors":"T. Shimura, Motoharu Sonogashira, Hidekazu Kasahara, M. Iiyama","doi":"10.1109/OCEANSE.2019.8867301","DOIUrl":"https://doi.org/10.1109/OCEANSE.2019.8867301","url":null,"abstract":"Determining fishing spots is an important decision-making for fishery. Fishers use environmental pattern information such as tide and vortex, and this process can be thought of as a good fishing spot determination problem from sea water temperature patterns. In this paper, we address this problem by a machine learning approach. Following an assumption that sea water temperature patterns of good fishing spots form some clusters, we discover these clusters and construct a classifier that discriminates whether an input sea water temperature pattern corresponds to good fishing spots clusters. We evaluated the effectiveness of our method using fishery data.","PeriodicalId":375793,"journal":{"name":"OCEANS 2019 - Marseille","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114141120","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: 3
Unmanned Aerial System for use in Environmental Monitoring of Water Body Wave Motion 用于水体波动环境监测的无人机系统
Pub Date : 2019-06-17 DOI: 10.1109/OCEANSE.2019.8867528
Steven D. Lloyd, P. Lepper, S. Pomeroy
This paper details the research conducted on an open source flight controller for the use of monitoring surface and wave motion of water bodies. Testing was preformed on an industrial FANUC robotic arm, where a Pixhawk 2 was tested using pre-preprogrammed circles of varying sizes to mimic the amplitude of sinusoidal waveforms. Results show good to excellent comparability between the circle radii programmed, and the calculated displacement from the Pixhawk’s reported acceleration. This was achieved through the use of Fourier Transforms, filtering and integration of the acceleration logged by the Pixhawk during tests. Such a system is envisaged to be used in the reduction of flow noise a hydrophone experiences from surface deployments, where real time monitoring of the surface would raise and lower a deployed hydrophone in the water column to reduce or eliminate flow noise. Further to this, this system could be used for an early warning tsunami detection system, which could compliment systems already deployed, as well as being a cost effective solution for areas where no systems are currently in place.
本文详细介绍了一种用于监测水体表面运动和波浪运动的开源飞行控制器的研究。在FANUC工业机械臂上进行了测试,其中Pixhawk 2使用预编程的不同大小的圆来模拟正弦波形的振幅。结果表明,程序计算的圆半径与Pixhawk报告的加速度计算的位移之间具有良好的可比性。这是通过使用傅里叶变换、滤波和集成Pixhawk在测试期间记录的加速度来实现的。这种系统被设想用于减少水面部署的水听器所经历的流动噪声,其中水面的实时监测将提高或降低水柱中部署的水听器,以减少或消除流动噪声。此外,该系统可用于海啸预警探测系统,这可以补充已经部署的系统,并且对于目前没有系统的地区来说是一种具有成本效益的解决方案。
{"title":"Unmanned Aerial System for use in Environmental Monitoring of Water Body Wave Motion","authors":"Steven D. Lloyd, P. Lepper, S. Pomeroy","doi":"10.1109/OCEANSE.2019.8867528","DOIUrl":"https://doi.org/10.1109/OCEANSE.2019.8867528","url":null,"abstract":"This paper details the research conducted on an open source flight controller for the use of monitoring surface and wave motion of water bodies. Testing was preformed on an industrial FANUC robotic arm, where a Pixhawk 2 was tested using pre-preprogrammed circles of varying sizes to mimic the amplitude of sinusoidal waveforms. Results show good to excellent comparability between the circle radii programmed, and the calculated displacement from the Pixhawk’s reported acceleration. This was achieved through the use of Fourier Transforms, filtering and integration of the acceleration logged by the Pixhawk during tests. Such a system is envisaged to be used in the reduction of flow noise a hydrophone experiences from surface deployments, where real time monitoring of the surface would raise and lower a deployed hydrophone in the water column to reduce or eliminate flow noise. Further to this, this system could be used for an early warning tsunami detection system, which could compliment systems already deployed, as well as being a cost effective solution for areas where no systems are currently in place.","PeriodicalId":375793,"journal":{"name":"OCEANS 2019 - Marseille","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130923553","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
Heat exchanger heat transfer coefficient and CFD modelling 换热器换热系数及CFD建模
Pub Date : 2019-06-17 DOI: 10.1109/OCEANSE.2019.8867541
David Mas, Sebastien Vimeux, B. Clauzade, Pierre Lucas, Francois Hochet, Vincent Melot, Damien Thuaud
Heat exchanger performance assessment with a high precision level is one of the key success factors for OTEC. Evaluating heat transfer coefficient with high precision in OTEC working conditions - specifically low heat flux, low mass flux, and large dimensions – is not possible by applying existing methods, models, and heat transfer laws. Initial analysis shows that heat transfer is driven by thermal and hydraulic parameters, which are linked, and therefore require 2D or 3D numerical models to be accurately modelled.Naval Energies and Naval Group have therefore defined and applied a heat transfer qualification method to correlate a 3D CFD thermo-hydraulical model based on ANSYS Fluent code with reduced scale testing on a water/ammonia flooded shell & tube evaporator. The results meet the high expectations as an uncertainty of less than 10% was achieved on the shell side heat transfer coefficient of the flooded shell & tube evaporator in 2-phase flow conditions, lowering the uncertainty of Rankine Cycle electrical production to 2%.
高精度的换热器性能评估是OTEC成功的关键因素之一。在OTEC工作条件下,特别是在低热流密度、低质量流密度和大尺寸条件下,采用现有的方法、模型和传热定律是不可能高精度地评估传热系数的。初步分析表明,传热是由热学和水力参数驱动的,这两个参数是相互关联的,因此需要精确建模2D或3D数值模型。因此,Naval energy和Naval Group定义并应用了一种传热鉴定方法,将基于ANSYS Fluent代码的3D CFD热水力模型与水/氨淹壳管式蒸发器的缩小尺寸测试相关联。结果达到了较高的期望值,两相流条件下淹没壳管式蒸发器壳侧传热系数的不确定度小于10%,将朗肯循环产电的不确定度降低到2%。
{"title":"Heat exchanger heat transfer coefficient and CFD modelling","authors":"David Mas, Sebastien Vimeux, B. Clauzade, Pierre Lucas, Francois Hochet, Vincent Melot, Damien Thuaud","doi":"10.1109/OCEANSE.2019.8867541","DOIUrl":"https://doi.org/10.1109/OCEANSE.2019.8867541","url":null,"abstract":"Heat exchanger performance assessment with a high precision level is one of the key success factors for OTEC. Evaluating heat transfer coefficient with high precision in OTEC working conditions - specifically low heat flux, low mass flux, and large dimensions – is not possible by applying existing methods, models, and heat transfer laws. Initial analysis shows that heat transfer is driven by thermal and hydraulic parameters, which are linked, and therefore require 2D or 3D numerical models to be accurately modelled.Naval Energies and Naval Group have therefore defined and applied a heat transfer qualification method to correlate a 3D CFD thermo-hydraulical model based on ANSYS Fluent code with reduced scale testing on a water/ammonia flooded shell & tube evaporator. The results meet the high expectations as an uncertainty of less than 10% was achieved on the shell side heat transfer coefficient of the flooded shell & tube evaporator in 2-phase flow conditions, lowering the uncertainty of Rankine Cycle electrical production to 2%.","PeriodicalId":375793,"journal":{"name":"OCEANS 2019 - Marseille","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114802461","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
The Analysis of Structural Strength and Fatigue Strength of Vertical Axis Hydraulic Turbine 垂直轴水轮机结构强度与疲劳强度分析
Pub Date : 2019-06-17 DOI: 10.1109/OCEANSE.2019.8867164
Fankai Kong, Hua-qiu Ding, Weiming Su
The floating vertical axis tidal current turbine will be subjected to complex loads when it works in the marine environment, which will cause the whole power generating device to oscillate, affect the working performance of vertical axis turbine, reduce the life expectancy of the whole power generating device, and even make its structure destroyed. Therefore, it is necessary to study the movement and stress of the turbine under complex sea conditions. Using AQWA to simulate the motion response of floating carrier in frequency domain, the frequency domain analysis of the turbine is carried out, and the hydrodynamic characteristics of floating carrier are studied. The strength of the turbine under extreme conditions is analyzed by ANSYS static analysis module. The results show that the flange connection is the position with the largest stress concentration. The wave forces are superimposed on the turbine, and the strength and fatigue life of the flange joint of the main shaft of the turbine are analyzed. The results show that the strength of the flange and the flange bolts meet the design requirements. However, the flange bolts will not meet the expected life requirements under the extreme conditions, so the turbine needs to stop operation under the extreme sea conditions. The analysis and simulation results provide a theoretical basis for the practical application of hydraulic turbines.
浮动立轴潮流水轮机在海洋环境中工作时,会受到复杂载荷的作用,使整个发电装置产生振荡,影响立轴水轮机的工作性能,降低整个发电装置的使用寿命,甚至使其结构遭到破坏。因此,有必要对轮机在复杂海况下的运动和应力进行研究。利用AQWA在频域上模拟浮动载体的运动响应,对水轮机进行频域分析,研究浮动载体的水动力特性。利用ANSYS静力分析模块对汽轮机在极端工况下的强度进行了分析。结果表明:法兰连接处是应力集中最大的位置;将波浪力叠加在水轮机上,分析了水轮机主轴法兰接头的强度和疲劳寿命。结果表明,法兰和法兰螺栓的强度满足设计要求。然而,在极端条件下,法兰螺栓将达不到预期寿命要求,因此涡轮机需要在极端海况下停止运行。分析和仿真结果为水轮机的实际应用提供了理论依据。
{"title":"The Analysis of Structural Strength and Fatigue Strength of Vertical Axis Hydraulic Turbine","authors":"Fankai Kong, Hua-qiu Ding, Weiming Su","doi":"10.1109/OCEANSE.2019.8867164","DOIUrl":"https://doi.org/10.1109/OCEANSE.2019.8867164","url":null,"abstract":"The floating vertical axis tidal current turbine will be subjected to complex loads when it works in the marine environment, which will cause the whole power generating device to oscillate, affect the working performance of vertical axis turbine, reduce the life expectancy of the whole power generating device, and even make its structure destroyed. Therefore, it is necessary to study the movement and stress of the turbine under complex sea conditions. Using AQWA to simulate the motion response of floating carrier in frequency domain, the frequency domain analysis of the turbine is carried out, and the hydrodynamic characteristics of floating carrier are studied. The strength of the turbine under extreme conditions is analyzed by ANSYS static analysis module. The results show that the flange connection is the position with the largest stress concentration. The wave forces are superimposed on the turbine, and the strength and fatigue life of the flange joint of the main shaft of the turbine are analyzed. The results show that the strength of the flange and the flange bolts meet the design requirements. However, the flange bolts will not meet the expected life requirements under the extreme conditions, so the turbine needs to stop operation under the extreme sea conditions. The analysis and simulation results provide a theoretical basis for the practical application of hydraulic turbines.","PeriodicalId":375793,"journal":{"name":"OCEANS 2019 - Marseille","volume":"47 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115791431","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
Psychological measure on fish catches and its application to optimization criterion for machine-learning-based predictors 渔获量的心理测量及其在基于机器学习的预测器优化准则中的应用
Pub Date : 2019-06-17 DOI: 10.1109/OCEANSE.2019.8867405
Yuya Kokaki, Tetsunori Kobayashi, Tetsuji Ogawa
Psychological fish catches are designed and successfully applied to an optimization criterion for machine-learning-based predictors. In automatic fish catch prediction, prediction errors allowed by fishery workers differ depending on fish catches. Such error tolerance has not been considered both in evaluating prediction results and in training predictors. In the present study, the investigation of fishermen’s tolerance in prediction errors using a psychophysics method and subsequently reflecting it in constructing a psychological measure on fish catches is performed. In addition, the psychological measure obtained is exploited in the optimization of fish catch prediction models to provide forecasts intuitive to fishery workers.
设计并成功地将心理渔获应用于基于机器学习的预测器的优化准则。在自动渔获量预测中,渔业工作者允许的预测误差随渔获量的不同而不同。在评估预测结果和训练预测者时都没有考虑到这种容错性。本文采用心理物理学的方法研究了渔民对预测误差的容忍度,并将其反映在渔获量的心理测量中。此外,将获得的心理测量值用于优化渔获量预测模型,为渔业工作者提供直观的预测。
{"title":"Psychological measure on fish catches and its application to optimization criterion for machine-learning-based predictors","authors":"Yuya Kokaki, Tetsunori Kobayashi, Tetsuji Ogawa","doi":"10.1109/OCEANSE.2019.8867405","DOIUrl":"https://doi.org/10.1109/OCEANSE.2019.8867405","url":null,"abstract":"Psychological fish catches are designed and successfully applied to an optimization criterion for machine-learning-based predictors. In automatic fish catch prediction, prediction errors allowed by fishery workers differ depending on fish catches. Such error tolerance has not been considered both in evaluating prediction results and in training predictors. In the present study, the investigation of fishermen’s tolerance in prediction errors using a psychophysics method and subsequently reflecting it in constructing a psychological measure on fish catches is performed. In addition, the psychological measure obtained is exploited in the optimization of fish catch prediction models to provide forecasts intuitive to fishery workers.","PeriodicalId":375793,"journal":{"name":"OCEANS 2019 - Marseille","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115819563","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
The dual roles of SmartBay, a multi-disciplinary subsea observatory delivering sustainable long term coastal marine observations and marine technology development SmartBay是一个多学科海底观测站,提供可持续的长期沿海海洋观测和海洋技术发展
Pub Date : 2019-06-17 DOI: 10.1109/OCEANSE.2019.8867042
P. Gaughan, A. Berry, Conall O Malley
The SmartBay cabled subsea observatory is a shallow water marine infrastructure with two distinct operational roles, namely the provision of high quality, multidisciplinary, marine coastal data for scientific analysis combined with a role in facilitating marine technology testing and innovation projects. This paper highlights the unique aspects in the bespoke design of the infrastructure that facilitates both these roles by allowing multiple suites of instrumentation and equipment to operate simultaneously and how the supporting cyber Infrastructure system ensures real-time access to environmental data for scientists as well as secure real time access for commercial marine technology developers and researchers. The longevity of the infrastructure was a key component of the system design and these unique features are highlighted and discussed in terms of how they allow the infrastructure to carry out multiple projects while maintaining long term data collection capabilities from a suite of core instrumentation. SmartBay’s dual purpose of scientific environmental monitoring and technology development has seen the deployment and completion of a range of projects involving a variety of international researchers both scientific and commercial. We illustrate how the SmartBay observatory engineering and software systems have been adapted and enhanced to facilitate the most efficient usage of the observatory and how operational efficiencies maximise the long-term commercial viability and sustainability of the infrastructure.
SmartBay海底电缆观测站是一个浅水海洋基础设施,具有两个不同的功能,即为科学分析提供高质量、多学科的海洋海岸数据,同时促进海洋技术测试和创新项目。本文强调了基础设施定制设计的独特之处,通过允许多套仪器和设备同时运行,以及支持网络基础设施系统如何确保科学家实时访问环境数据,以及为商业海洋技术开发人员和研究人员提供安全的实时访问。基础设施的使用寿命是系统设计的一个关键组成部分,这些独特的特性在它们如何允许基础设施执行多个项目的同时,保持一套核心仪器的长期数据收集能力方面得到了强调和讨论。SmartBay具有科学环境监测和技术开发的双重目的,已经部署和完成了一系列涉及各种国际研究人员的项目,包括科学和商业。我们将介绍如何调整和加强智能湾天文台的工程和软件系统,以最有效地使用天文台,以及如何提高运作效率,以最大限度地提高基础设施的长期商业可行性和可持续性。
{"title":"The dual roles of SmartBay, a multi-disciplinary subsea observatory delivering sustainable long term coastal marine observations and marine technology development","authors":"P. Gaughan, A. Berry, Conall O Malley","doi":"10.1109/OCEANSE.2019.8867042","DOIUrl":"https://doi.org/10.1109/OCEANSE.2019.8867042","url":null,"abstract":"The SmartBay cabled subsea observatory is a shallow water marine infrastructure with two distinct operational roles, namely the provision of high quality, multidisciplinary, marine coastal data for scientific analysis combined with a role in facilitating marine technology testing and innovation projects. This paper highlights the unique aspects in the bespoke design of the infrastructure that facilitates both these roles by allowing multiple suites of instrumentation and equipment to operate simultaneously and how the supporting cyber Infrastructure system ensures real-time access to environmental data for scientists as well as secure real time access for commercial marine technology developers and researchers. The longevity of the infrastructure was a key component of the system design and these unique features are highlighted and discussed in terms of how they allow the infrastructure to carry out multiple projects while maintaining long term data collection capabilities from a suite of core instrumentation. SmartBay’s dual purpose of scientific environmental monitoring and technology development has seen the deployment and completion of a range of projects involving a variety of international researchers both scientific and commercial. We illustrate how the SmartBay observatory engineering and software systems have been adapted and enhanced to facilitate the most efficient usage of the observatory and how operational efficiencies maximise the long-term commercial viability and sustainability of the infrastructure.","PeriodicalId":375793,"journal":{"name":"OCEANS 2019 - Marseille","volume":"445 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122150919","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: 3
Acoustic Scattering from a one-dimension Gaussian surface on a pressure-release boundary 压力释放边界上一维高斯表面的声散射
Pub Date : 2019-06-17 DOI: 10.1109/OCEANSE.2019.8867184
Xue Runze, Ma Yuanliang, Yang Kunde, Yang Qiulong, Huang Chunlong, Z. Yukun
In this study, the impact of parameters for a random Gaussian surface with on the scattering field is analysed by solving an integral equation. The boundary is assumed to be a pressure release boundary. The bistatic scattering cross section of the scattering field is obtained over surface realizations. The focus is mainly on two parameters of the surface: the root mean square (rms) slope and the ratio of the incident wavelength to the surface correlation length , the former can be regarded as an indicator of surface roughness, while the latter a character describing the scale of surface roughness. For the correlation length with the same order of magnitude as the incident wavelength, the scattering energy exists on the whole space. However the correlation lengths in other scales only affect the region around the specular direction. As correlation length is identical with the incident wavelength in magnitude, the rms slope angle as an indicator of the surface roughness affect the distribution of scattering energy between the specular direction and remaining region.
本文通过求解一个积分方程,分析了随机高斯曲面参数对散射场的影响。边界假定为压力释放边界。在表面实现上得到了散射场的双稳态散射截面。重点研究了表面的两个参数:均方根斜率和入射波长与表面相关长度的比值,前者可以看作是表面粗糙度的指标,后者是描述表面粗糙度尺度的特征。对于与入射波长相同数量级的相关长度,散射能量存在于整个空间。而其他尺度的相关长度只影响镜面方向附近的区域。由于相关长度与入射波长大小相同,作为表面粗糙度指标的均方根斜率角影响了镜面方向与剩余区域之间散射能量的分布。
{"title":"Acoustic Scattering from a one-dimension Gaussian surface on a pressure-release boundary","authors":"Xue Runze, Ma Yuanliang, Yang Kunde, Yang Qiulong, Huang Chunlong, Z. Yukun","doi":"10.1109/OCEANSE.2019.8867184","DOIUrl":"https://doi.org/10.1109/OCEANSE.2019.8867184","url":null,"abstract":"In this study, the impact of parameters for a random Gaussian surface with on the scattering field is analysed by solving an integral equation. The boundary is assumed to be a pressure release boundary. The bistatic scattering cross section of the scattering field is obtained over surface realizations. The focus is mainly on two parameters of the surface: the root mean square (rms) slope and the ratio of the incident wavelength to the surface correlation length , the former can be regarded as an indicator of surface roughness, while the latter a character describing the scale of surface roughness. For the correlation length with the same order of magnitude as the incident wavelength, the scattering energy exists on the whole space. However the correlation lengths in other scales only affect the region around the specular direction. As correlation length is identical with the incident wavelength in magnitude, the rms slope angle as an indicator of the surface roughness affect the distribution of scattering energy between the specular direction and remaining region.","PeriodicalId":375793,"journal":{"name":"OCEANS 2019 - Marseille","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124279539","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
Convolutional Neural Network Architectures for Sonar-Based Diver Detection and Tracking 基于声纳的潜水员探测与跟踪的卷积神经网络结构
Pub Date : 2019-06-17 DOI: 10.1109/OCEANSE.2019.8867461
Igor Kvasić, N. Mišković, Z. Vukic
Autonomous underwater navigation presents a whole set of challenges to be resolved in order to become adequately accurate and reliable. That is particularly critical when human divers work in close collaboration with autonomous underwater vehicles (AUVs). In absence of global positioning signals underwater, acoustic based sensors such as LBL (long-baseline), SBL (short-baseline) and USBL (ultrashort-baseline) are commonly used for navigation and localization. In addition to these low-bandwidth and high latency technologies, cameras and sonars can provide position measurements relative to the vehicle which can be used as an aid for navigation as well as for keeping a safe working distance between the diver and the AUV. While optical cameras are highly affected by water turbidity and lighting conditions, sonar images often become hard to interpret using conventional image processing methods due to image granulation and high noise levels.This paper focuses on finding a robust and reliable sonar image processing method for detection and tracking of human divers using convolutional neural networks. Machine learning algorithms are making a huge impact in computer vision applications but are not always considered when it comes to sonar image processing. After presenting commonly used image processing techniques the paper will focus on giving an overview of state-of-the-art machine learning algorithms and explore their performance in custom sonar image dataset processing. Finally, the performance of these algorithms will be compared on a set of sonar recordings to determine their reliability and applicability in a real-time operation.
为了达到足够的准确性和可靠性,自主水下导航提出了一系列需要解决的挑战。当人类潜水员与自主水下航行器(auv)密切合作时,这一点尤为重要。在水下没有全球定位信号的情况下,基于声学的传感器如LBL(长基线)、SBL(短基线)和USBL(超短基线)通常用于导航和定位。除了这些低带宽和高延迟技术之外,摄像机和声纳还可以提供相对于车辆的位置测量,这可以作为导航的辅助,并保持潜水员和AUV之间的安全工作距离。虽然光学相机受水浊度和光照条件的影响很大,但由于图像颗粒化和高噪声水平,声纳图像通常难以使用传统的图像处理方法进行解释。本文的重点是寻找一种鲁棒可靠的声纳图像处理方法,利用卷积神经网络对人体潜水员进行检测和跟踪。机器学习算法在计算机视觉应用中产生了巨大的影响,但在声纳图像处理中并不总是被考虑。在介绍了常用的图像处理技术之后,本文将重点介绍最先进的机器学习算法,并探索它们在自定义声纳图像数据集处理中的性能。最后,将在一组声纳记录上比较这些算法的性能,以确定它们在实时操作中的可靠性和适用性。
{"title":"Convolutional Neural Network Architectures for Sonar-Based Diver Detection and Tracking","authors":"Igor Kvasić, N. Mišković, Z. Vukic","doi":"10.1109/OCEANSE.2019.8867461","DOIUrl":"https://doi.org/10.1109/OCEANSE.2019.8867461","url":null,"abstract":"Autonomous underwater navigation presents a whole set of challenges to be resolved in order to become adequately accurate and reliable. That is particularly critical when human divers work in close collaboration with autonomous underwater vehicles (AUVs). In absence of global positioning signals underwater, acoustic based sensors such as LBL (long-baseline), SBL (short-baseline) and USBL (ultrashort-baseline) are commonly used for navigation and localization. In addition to these low-bandwidth and high latency technologies, cameras and sonars can provide position measurements relative to the vehicle which can be used as an aid for navigation as well as for keeping a safe working distance between the diver and the AUV. While optical cameras are highly affected by water turbidity and lighting conditions, sonar images often become hard to interpret using conventional image processing methods due to image granulation and high noise levels.This paper focuses on finding a robust and reliable sonar image processing method for detection and tracking of human divers using convolutional neural networks. Machine learning algorithms are making a huge impact in computer vision applications but are not always considered when it comes to sonar image processing. After presenting commonly used image processing techniques the paper will focus on giving an overview of state-of-the-art machine learning algorithms and explore their performance in custom sonar image dataset processing. Finally, the performance of these algorithms will be compared on a set of sonar recordings to determine their reliability and applicability in a real-time operation.","PeriodicalId":375793,"journal":{"name":"OCEANS 2019 - Marseille","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124538650","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: 27
Design of a Self-moving Autonomous Buoy for the Localization of Underwater Targets 一种用于水下目标定位的自移动自主浮标设计
Pub Date : 2019-06-17 DOI: 10.1109/OCEANSE.2019.8867202
A. Meschini, J. Gelli, M. Pagliai, Andrea Della Valle, Matteo Franchi, M. Bianchi, A. Ridolfi, B. Allotta
The paper presents the electromechanical design of an Autonomous Surface Vehicle (ASV) developed by the Department of Industrial Engineering (DIEF) of the University of Florence (UNIFI), Italy. One of the main functions of this autonomous moving buoy is to localize underwater targets, such as Autonomous Underwater Vehicles (AUVs), through an Ultra Short BaseLine (USBL) and to enable the communication with them; furthermore, it is possible to equip the buoy with sensors or payloads, for instance cameras to detect the seabed. The buoy specifications and its navigation devices are described. The main features of the developed floating device are given, starting from its system architecture to its structural design. The buoy will be assembled during Summer 2019 and tested together with the UNIFI DIEF underwater vehicles.
本文介绍了由意大利佛罗伦萨大学(UNIFI)工业工程系(DIEF)开发的自动地面车辆(ASV)机电设计。这种自主移动浮标的主要功能之一是通过超短基线(USBL)定位水下目标,如自主水下航行器(auv),并使其能够与之通信;此外,还可以为浮标配备传感器或有效载荷,例如用于探测海底的摄像机。介绍了浮标的规格和导航装置。从系统架构到结构设计,给出了所研制的浮动装置的主要特点。该浮标将于2019年夏季组装,并与UNIFI DIEF水下航行器一起进行测试。
{"title":"Design of a Self-moving Autonomous Buoy for the Localization of Underwater Targets","authors":"A. Meschini, J. Gelli, M. Pagliai, Andrea Della Valle, Matteo Franchi, M. Bianchi, A. Ridolfi, B. Allotta","doi":"10.1109/OCEANSE.2019.8867202","DOIUrl":"https://doi.org/10.1109/OCEANSE.2019.8867202","url":null,"abstract":"The paper presents the electromechanical design of an Autonomous Surface Vehicle (ASV) developed by the Department of Industrial Engineering (DIEF) of the University of Florence (UNIFI), Italy. One of the main functions of this autonomous moving buoy is to localize underwater targets, such as Autonomous Underwater Vehicles (AUVs), through an Ultra Short BaseLine (USBL) and to enable the communication with them; furthermore, it is possible to equip the buoy with sensors or payloads, for instance cameras to detect the seabed. The buoy specifications and its navigation devices are described. The main features of the developed floating device are given, starting from its system architecture to its structural design. The buoy will be assembled during Summer 2019 and tested together with the UNIFI DIEF underwater vehicles.","PeriodicalId":375793,"journal":{"name":"OCEANS 2019 - Marseille","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125837811","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
Deep-sea submarine terrain monitoring——a brand new way 深海海底地形监测——一种全新的方式
Pub Date : 2019-06-01 DOI: 10.1109/OCEANSE.2019.8866880
C. Cao, Jia-wang Chen, M. Feng, Chunying Xu, Peihao Zhang, P. Zhou
The geomorphology of gas hydrate test mining areas is an important topic in marine geology, geophysics and ocean engineering. The monitoring of shallow hydrates on the seabed has broad prospects and far-reaching significance for the development and utilization of massive hydrates.
天然气水合物试验矿区地貌研究是海洋地质、地球物理和海洋工程领域的一个重要课题。海底浅层水合物监测对大量水合物的开发利用具有广阔的前景和深远的意义。
{"title":"Deep-sea submarine terrain monitoring——a brand new way","authors":"C. Cao, Jia-wang Chen, M. Feng, Chunying Xu, Peihao Zhang, P. Zhou","doi":"10.1109/OCEANSE.2019.8866880","DOIUrl":"https://doi.org/10.1109/OCEANSE.2019.8866880","url":null,"abstract":"The geomorphology of gas hydrate test mining areas is an important topic in marine geology, geophysics and ocean engineering. The monitoring of shallow hydrates on the seabed has broad prospects and far-reaching significance for the development and utilization of massive hydrates.","PeriodicalId":375793,"journal":{"name":"OCEANS 2019 - Marseille","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116930128","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
期刊
OCEANS 2019 - Marseille
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1