OCEANS 2010 MTS/IEEE SEATTLE最新文献

{"title":"Model based decision support for underwater glider operation monitoring","authors":"R. Grasso, D. Cecchi, M. Cococcioni, C. Trees, M. Rixen, A. Alvarez, C. Strode","doi":"10.1109/OCEANS.2010.5664566","DOIUrl":"https://doi.org/10.1109/OCEANS.2010.5664566","url":null,"abstract":"A decision support framework is proposed to assess the environmental impact on underwater glider operations. A nonlinear glider kinematic model with stochastic current speed as input is used to predict statistics of the glider position from the statistics of the current by the unscented transform. Application dependent risk indexes are calculated and used by glider pilots to decide mission parameter corrections in order to safely operate. Tests of the methodology and examples of application are provided based on data from an experiment in the Ligurian Sea.","PeriodicalId":363534,"journal":{"name":"OCEANS 2010 MTS/IEEE SEATTLE","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129641675","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}

{"title":"Energy management for the Nereus hybrid underwater vehicle","authors":"D. Gomez-Ibanez, C. Taylor, M. Heintz, J. Howland, D. Yoerger, A. Bowen, L. Whitcomb","doi":"10.1109/OCEANS.2010.5663885","DOIUrl":"https://doi.org/10.1109/OCEANS.2010.5663885","url":null,"abstract":"The hybrid vehicle Nereus employs an energy efficient architecture to enable novel modes of remote operation. Available energy is limited by the capacity of Nereus's on-board batteries. Nereus's energy design was developed by first creating representative dive profiles for candidate missions, and then developing an energy budget for each mission. The design of energy intensive subsystems, including the propulsion thrusters, manipulator arm, and lights, was optimized to reduce energy consumption while delivering adequate performance. Performance of Nereus's energy systems during its first three expeditions is reported.","PeriodicalId":363534,"journal":{"name":"OCEANS 2010 MTS/IEEE SEATTLE","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128919987","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}

{"title":"Utilizing deep ocean currents to power extended duration sensors","authors":"L. Bezanson, J. Thornton, N. Konchuba, S. Priya","doi":"10.1109/OCEANS.2010.5664524","DOIUrl":"https://doi.org/10.1109/OCEANS.2010.5664524","url":null,"abstract":"Energy harvesting has the potential to save billions of dollars and create ground breaking technologies for sustainable ocean monitoring systems. Replacement of batteries from the sensors deployed on sea floor is expensive and tedious process. The cost of maintenance for battery operated equipments in the deep waters may be prohibitive. Thus, it is highly desirable to develop a system that harnesses energy to prolong the life of these sensors or transducers and reduce the maintenance costs. The low energy density environment of the sea floor limits the methods that can be used for energy harvesting. Vortex Induced Vibrations (VIV) due to fluid flow plagues structures and cables in the undersea environment. The energy produced can be very destructive and the effect has been analyzed for many years. It is this phenomenon that Progeny has been investigating to power the undersea sensors. This will be accomplished by applying the force produced by VIV to piezoelectric cymbal generators and storing the energy in secondary batteries. Progeny Systems has teamed with Center for Energy Harvesting Materials and Systems (CEHMS), Virginia Tech, whom are leader in the vibration energy harvesting field, and have successfully demonstrated the power generation capability of cymbal under laboratory conditions using the boundary conditions derived from VIV. Extensive analytical modeling and ATILA based FEM analysis was conducted to optimize the performance of the cymbal transducers.","PeriodicalId":363534,"journal":{"name":"OCEANS 2010 MTS/IEEE SEATTLE","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130907731","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}

{"title":"Synchronized intelligent buoy network for underwater positioning","authors":"R. Almeida, N. Cruz, A. Matos","doi":"10.1109/OCEANS.2010.5663995","DOIUrl":"https://doi.org/10.1109/OCEANS.2010.5663995","url":null,"abstract":"This paper addresses the development of a new generation of lightweight intelligent buoys. These buoys are used to support underwater acoustic positioning systems, but were also designed to be elements of portable coastal observatories for short term deployments. We will present the main features of a buoy prototype including the physical structure, the computational system and algorithms developed to support operations. The paper also shows how to take advantage of this new tool to implement different navigation algorithms for AUVs.","PeriodicalId":363534,"journal":{"name":"OCEANS 2010 MTS/IEEE SEATTLE","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131698449","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}

{"title":"Assessing the effects of marine and hydrokinetic energy development on marine and estuarine resources","authors":"J. Ward, Irvin R. Schultz, Dana L. Woodruff, Guritno Roesijadi, A. Copping","doi":"10.1109/OCEANS.2010.5664064","DOIUrl":"https://doi.org/10.1109/OCEANS.2010.5664064","url":null,"abstract":"The world's oceans and estuaries offer enormous potential to meet the nation's growing demand for energy. The use of marine and hydrokinetic (MHK) devices to harness the power of wave and tidal energy could contribute significantly toward meeting federaland state-mandated renewable energy goals while supplying a substantial amount of clean energy to coastal communities. Locations along the eastern and western coasts of the United States between 40° and 70° north latitude are ideal for MHK deployment, and recent estimates of wave and current energy resource potential in the US suggest that up to 400 terawatt hours could be generated, representing about 10% of national energy demand. Because energy derived from wave and tidal devices is highly predictable, their inclusion in our energy portfolio could help balance available sources of energy production, including hydroelectric, coal, nuclear, wind, solar, geothermal, and others. As an emerging industry, MHK energy developers face many challenges associated with the siting, permitting, construction, and operation of pilot and commercial-scale facilities. As the industry progresses, it will be necessary not only to secure financial support and develop robust technologies capable of efficient, continued operation in harsh environments, but also to implement effective monitoring programs to evaluate long-term effects of device operation and assure resource agencies and members of the public that potential environmental impacts are understood and can be addressed. At this time, little is known about the environmental effects of MHK energy generation at pilotor full-scale operational scenarios. Potential effects could include changes to aquatic species behavior from exposure to electromagnetic fields or operational noise; physical interaction of marine mammals, fish, and invertebrates with operating devices or mooring cables; or changes to beach characteristics and water quality from long-term deployment of devices in coastal locations. This lack of knowledge creates a high degree of uncertainty that affects the actions of regulatory agencies, influences the opinions and concerns of stakeholder groups, affects the commitment of energy project developers and investors, and ultimately, the solvency of the industry. To address the complexity of environmental issues associated with MHK energy, PNNL has received support from the Department of Energy Office of Energy Efficiency and Renewable Energy Waterpower Program to develop research and development that draws on the knowledge of the industry, regulators, and stakeholders. Initial research has focused on 1) the development of a knowledge management database and related environmental risk evaluation system, 2) the use of hydrodynamic models to assess the effects of energy removal on coastal systems, 3) the development of laboratory and mesocosm experiments to evaluate the effects of EMF and noise on representative marine and estuarine species, and 4) collabo","PeriodicalId":363534,"journal":{"name":"OCEANS 2010 MTS/IEEE SEATTLE","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126760752","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}

{"title":"A novel token passing algorithm for management of refueling vehicles in a multi-UUV 24/7 mission scenario","authors":"K. DeMedeiros, R. Balasubramanian, C. Duarte, G. Martel","doi":"10.1109/OCEANS.2010.5664034","DOIUrl":"https://doi.org/10.1109/OCEANS.2010.5664034","url":null,"abstract":"During extended continuous operations, gaps can form in the operations area when vehicles leave to recharge their energy supplies. This project implements a novel token-passing algorithm to manage a refueling strategy for cooperating unmanned undersea vehicles. The algorithm, which limits the number of vehicles to refuel during any time segment, robustly accommodates intermittent communications.","PeriodicalId":363534,"journal":{"name":"OCEANS 2010 MTS/IEEE SEATTLE","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126262876","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}

{"title":"Decomposed Raptor codes for data-centric storage in underwater acoustic sensor networks","authors":"Rui Cao, Liuqing Yang","doi":"10.1109/OCEANS.2010.5664386","DOIUrl":"https://doi.org/10.1109/OCEANS.2010.5664386","url":null,"abstract":"Underwater acoustic sensor networks (UASN) can enable many potential oceanic applications. For the environment monitoring and event detection services, the sensor networks will record a large amount of data. But due to the harsh sea conditions and node energy constraints, real-time data delivery to the ground data center may not be feasible. Thus in-network data storage becomes a possible alternative. To enable efficient and frequent data access services, data-centric storage (DCS) protocols have been proposed for terrestrial sensor networks. However, the adverse underwater environment challenges the DCS protocol in two aspects. First, the unreliable underwater channel requires more robust design of long-distance multi-hop reliable data transport. Secondly, the high node failure rate demands higher reliability of the stored data. On the other hand, fountain codes have been studied for the advantages in data transport and storage. To adapt fountain codes into underwater DCS, we design decomposed Raptor codes (DRC) with three-layer encoding. In addition, a DRC-assisted DCS (DCS-DRC) protocol is proposed for reliable underwater in-network data storage. Analyses and simulations are provided to verify the performance and benefits of the DRC scheme and the DCS-DRC protocol.","PeriodicalId":363534,"journal":{"name":"OCEANS 2010 MTS/IEEE SEATTLE","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122968502","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}

{"title":"Miniature, low power, generic Doppler sonar","authors":"F. Jaffré, T. Austin, G. Terray","doi":"10.1109/OCEANS.2010.5663860","DOIUrl":"https://doi.org/10.1109/OCEANS.2010.5663860","url":null,"abstract":"The Oceanographic Systems Laboratory at Woods Hole Oceanographic Institution has developed a small, low power, single-axis, range-gated pulse-coherent Doppler sonar, that is primarily intended for boundary layer turbulence studies. This instrument is composed of a receiver-transmitter, a 24MHz analog-to-digital converter, a down converter, and a low power Digital Signal Processor (DSP). The system is capable of autonomous operation from a variety of stationary platforms, such as buoys, moorings, and bottom frames, and small mobile platforms, including gliders, profilers, towed bodies and autonomous underwater vehicles (AUVs).","PeriodicalId":363534,"journal":{"name":"OCEANS 2010 MTS/IEEE SEATTLE","volume":"8 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114117763","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}

{"title":"UNCLOS under ice survey - An historic AUV deployment in the Canadian high arctic","authors":"T. Crees, C. Kaminski, J. Ferguson, J. Laframboise, A. Forrest, J. Williams, E. MacNeil, D. Hopkin, R. Pederson","doi":"10.1109/OCEANS.2010.5664438","DOIUrl":"https://doi.org/10.1109/OCEANS.2010.5664438","url":null,"abstract":"In March and April 2010, an ISE Explorer Autonomous Underwater Vehicle (AUV), built for Natural Resources Canada (NRCan), was deployed to Canada's high Arctic. Its mission was to undertake under-ice bathymetric surveys in support of Canada's submission to establish the outer limits of its continental shelf under the United Nations Convention on the Law of the Sea (UNCLOS). During this deployment several under-ice records were broken and several new technologies were demonstrated.","PeriodicalId":363534,"journal":{"name":"OCEANS 2010 MTS/IEEE SEATTLE","volume":"128 1-3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116707187","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}

{"title":"Surface measurement by using a fixed antenna microwave pulse Doppler radar in Sagami-bay off Hiratsuka in Japan","authors":"C. Rheem, Y. Katsura","doi":"10.1109/OCEANS.2010.5664267","DOIUrl":"https://doi.org/10.1109/OCEANS.2010.5664267","url":null,"abstract":"A sea surface measurement system by using a microwave pulse Doppler radar has been developed. It can measure sea surface waves, sea surface currents and a sea level at one time only with the use of mathematical relations without the necessity of using any empirical relations. From September 2009 to January 2010, sea surface conditions had been measured by using a X-band microwave pulse Doppler radar at 1 km off Hiratuska in Sagami-bay, Japan. Algorithms for obtaining of sea surface conditions from the backscattering microwaves measured by a pulse Doppler radar and some measurement results are shown in this paper. The radar measured shoaling phenomena clearly. The increasing rate of wave height became larger in proportion to the square of the wave orbital velocity.","PeriodicalId":363534,"journal":{"name":"OCEANS 2010 MTS/IEEE SEATTLE","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125049323","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}