Daniel Mihai Toma, J. del Río, T. O'Reilly, A. Manuel
{"title":"Automatic marine sensors services discovery on IP networks","authors":"Daniel Mihai Toma, J. del Río, T. O'Reilly, A. Manuel","doi":"10.1109/OCEANS-BERGEN.2013.6607985","DOIUrl":"https://doi.org/10.1109/OCEANS-BERGEN.2013.6607985","url":null,"abstract":"Nowadays, the studies of episodic processes in the ocean is manly done through the innovative facilities called ocean observatories which provide unprecedented amounts of power and two-way bandwidth to access and control sensor networks in the oceans. The most capable ocean observatories are designed around a submarine fiber optic/power cable connecting one or more seafloor science nodes to the terrestrial power grid and communications backhaul. In a network consisting of tens, hundreds or thousands of marine sensors, manual configuration and integration becomes very challenging. Methods are required which support this task to minimize the administration efforts. This paper addresses this issue and presents an approach for the automatic discovery of marine sensors in ocean observatories. The work provides a needed reference implementation of PUCK over TCP/IP, and suggests the potential of a set of protocols and standards that could realize true end to end “Plug and Work” capability for sensor networks.","PeriodicalId":224246,"journal":{"name":"2013 MTS/IEEE OCEANS - Bergen","volume":" 22","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114051440","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 mid-range 3D sonar","authors":"E. Stytsenko, D. Greager, J. Barrel, N. Scott","doi":"10.1109/OCEANS-BERGEN.2013.6607998","DOIUrl":"https://doi.org/10.1109/OCEANS-BERGEN.2013.6607998","url":null,"abstract":"This paper describes a sonar system based on a hyperbolic-paraboloidal transducer beamformer. The array matrix composed of square sectioned elements is conformal to a doubly ruled surface of a hyperbolic paraboloid. The lines of elements in the array follow the surface rulings and are electrically configured to form multiple perpendicular linear array pairs. A multi-channel transmitter drives the transducer to ensonify an approximately square field of view of about 45 by 45 degrees either sequentially line by line or with a single ping. The multi-channel front end receiver allows simultaneous signal acquisition from receiver array lines. Unlike swath sounders, which rely on movement to build up a 3D image, this system is capable of generating a 3D image of the field while stationary. With a single channel transmitter and n-channel receiver it needs n pings to complete the image of the field. If wide band multichannel transmit-receive electronics is employed the number of pings required for full coverage can be reduced by introducing transmitted signal coding with subsequent discrimination of the received signals.","PeriodicalId":224246,"journal":{"name":"2013 MTS/IEEE OCEANS - Bergen","volume":"32 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114159948","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":"Passive nonlinear observer design for special structure vessels","authors":"G. Xia, Xingchao Shao, Hongjian Wang, Y. Le","doi":"10.1109/OCEANS-BERGEN.2013.6608013","DOIUrl":"https://doi.org/10.1109/OCEANS-BERGEN.2013.6608013","url":null,"abstract":"In most ship motion control problems, the output measurements contain high frequency data and noise measurements. This article presents a passive nonlinear observer design for special structure vessels, and the observer can filter the noise and high frequency data. For dynamic positioning vessels, the Coriolis-centripetal matrix (C-matrix) in the model is ignored and the inertia matrix is symmetric. These properties simplify the process of designing state observer. However, to reduce the observe error and improve the control effect, the C-matrix cannot be ignored. But the existence of C-matrix brings difficulty to the observer design. Acceleration feedback (AFB) technology and coordinate transformation are introduced to overcome this problem. Utilizing the AFB, the system inertia matrix can be reshaped to a symmetric one. Then the C-matrix can be removed through coordinate transformation.","PeriodicalId":224246,"journal":{"name":"2013 MTS/IEEE OCEANS - Bergen","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129413323","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}
Mike Eichhorn, R. Taubert, C. Ament, M. Jacobi, Torsten Pfützenreuter
{"title":"Modular AUV system for Sea Water Quality Monitoring and Management","authors":"Mike Eichhorn, R. Taubert, C. Ament, M. Jacobi, Torsten Pfützenreuter","doi":"10.1109/OCEANS-Bergen.2013.6608086","DOIUrl":"https://doi.org/10.1109/OCEANS-Bergen.2013.6608086","url":null,"abstract":"The sustained and cost-effective monitoring of the water quality within European coastal areas is of growing importance in view of the upcoming European marine and maritime directives, i.e. the increased industrial use of the marine environment. Such monitoring needs mechanisms/systems to detect the water quality in a large sea area at different depths in real time. This paper presents a system for the automated detection and analysis of water quality parameters using an autonomous underwater vehicle. The analysis of discharge of nitrate into Norwegian fjords near aqua farms is one of the main application fields of this AUV system. As carrier platform the AUV “CWolf” from the Fraunhofer IOSB-AST will be used, which is perfectly suited through its modular payload concept. The mission task and the integration of the payload unit which includes the sensor module, the scientific and measurement computer in the AUV carrier platform will be described. Few practice oriented information about the software and interface concept, the function of the several software modules and the test platform with the several test levels to test every module will be discussed.","PeriodicalId":224246,"journal":{"name":"2013 MTS/IEEE OCEANS - Bergen","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129769036","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}
M. Nishimura, E. Shimizu, K. Amakasu, Yuhang Du, Tsuyoshi Ode, T. Takamasa
{"title":"Underwater noise property of water jet propelled electric boat","authors":"M. Nishimura, E. Shimizu, K. Amakasu, Yuhang Du, Tsuyoshi Ode, T. Takamasa","doi":"10.1109/OCEANS-BERGEN.2013.6608104","DOIUrl":"https://doi.org/10.1109/OCEANS-BERGEN.2013.6608104","url":null,"abstract":"The vibration and the noise generated by the water jet electric boats are low compared with those of same sized internal combustion engine boats. However, an objective evaluation of the vibration and the noise from electric boats has not yet been conducted. In this research, an underwater noise from an electric boat and that from an internal combustion engine boat were measured and analyzed. From results of experiments and frequency analysis, maximum noise level of the electric boat was found to be lower than that of internal combustion engine boat. It was also shown that the impeller revolution was the main source of underwater noise from the electric boat.","PeriodicalId":224246,"journal":{"name":"2013 MTS/IEEE OCEANS - Bergen","volume":"50 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128375690","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":"Sampling on-demand with fleets of underwater gliders","authors":"G. Ferri, M. Cococcioni, A. Alvarez","doi":"10.1109/OCEANS-BERGEN.2013.6608037","DOIUrl":"https://doi.org/10.1109/OCEANS-BERGEN.2013.6608037","url":null,"abstract":"This paper presents an optimal sampling approach to plan the optimum paths for a glider fleet. Optimal sampling has recently received considerable attention in the research community and consists in planning the paths to minimize some sampling metrics related to the phenomenon under study. Different criteria (e.g. A, G, or E optimality) used in the geosciences to obtain an optimum design lead to different sampling strategies. In particular, the A criterion produces paths for the gliders that minimize the overall level of uncertainty over the area of interest. However, there are commonly operative situations in which the marine scientists may prefer not to minimize the overall uncertainty of a certain area, but instead they may be interested in achieving an acceptable uncertainty sufficient for the scientific or operational needs of the mission. We propose and discuss here an approach named sampling on-demand that explicitly addresses this need. In our approach the user provides an objective map, setting both the amount and the geographic distribution of the uncertainty to be achieved after assimilating the information gathered by the fleet. A new optimality criterion, Aη, is introduced. The resulting optimization problem is solved by an algorithm based on Simulated Annealing producing optimum paths for the vehicles. The algorithm takes into account the constraints imposed by the glider navigation features, the desired geometric features of the paths and the problems of reachability caused by ocean currents. Ocean currents and temperature data resulted from an ocean mathematical model are used to validate the method in different scenarios in a area covering the Western Mediterranean Sea.","PeriodicalId":224246,"journal":{"name":"2013 MTS/IEEE OCEANS - Bergen","volume":"181 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124558178","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}
Yibo Zhu, S. Le, Lina Pu, Xiaoyan Lu, Zheng Peng, Jun-hong Cui, M. Zuba
{"title":"Aqua-Net Mate: A real-time virtual channel/modem simulator for Aqua-Net","authors":"Yibo Zhu, S. Le, Lina Pu, Xiaoyan Lu, Zheng Peng, Jun-hong Cui, M. Zuba","doi":"10.1109/OCEANS-BERGEN.2013.6608076","DOIUrl":"https://doi.org/10.1109/OCEANS-BERGEN.2013.6608076","url":null,"abstract":"As the theory behind underwater acoustic networks (UANs) becomes more mature, there is an increasing interest in testing it in reality. Because real field tests are costly, a protocol is usually simulated before it is tested. At present, a simulation program is generally separated from its real companion, which doubles the effort to develop a protocol and possibly makes a significant difference between the simulation and reality results because of the ways they are implemented. In order to address these issues, we introduce Aqua-Net Mate, a real-time virtual channel/modem simulator specifically designed for Aqua-Net, a well-developed UAN networking framework. Aqua-Net Mate is yet transparent to Aqua-Net, allowing Aqua-Net to run in simulation mode without any modification. Aqua-Net Mate is highly extensible and configurable. It also unified parameter configuration and real-time schedule. More importantly, Aqua-Net Mate emulates real acoustic modems by employing a new state machine design. Comparison between simulations with Aqua-Net Mate and past lake tests shows that Aqua-Net Mate can effectively evaluate field test results and the state machine design can accurately capture the behaviors of real modems.","PeriodicalId":224246,"journal":{"name":"2013 MTS/IEEE OCEANS - Bergen","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124501890","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":"Scenario-based fault-tolerant model predictive control for diesel-electric marine power plant","authors":"T. Bø, T. Johansen","doi":"10.1109/OCEANS-BERGEN.2013.6607989","DOIUrl":"https://doi.org/10.1109/OCEANS-BERGEN.2013.6607989","url":null,"abstract":"Diesel-electric propulsion is often used for vessels with dynamic positioning systems. For such vessels any single point failure should not lead to loss of position. One failure case is that a generator set is suddenly disconnected. This loss of a power producer gives a drop of the power bus frequency. A blackout will occur if the frequency drops too much, it is therefore required to keep the frequency high enough to withstand such a failure. Load reduction is often used to avoid blackouts due to such faults. The power management system will detect that a fault has occurred, and will reduce the load of some consumers to reduce the overload and recover the plant. In this paper, a controller is suggested which explicitly handle the requirements for the failure scenarios. This method is a practical approach to handle the safety requirements, in addition to existing load reduction. The plant can run with fewer connected generator sets by better control of the safety requirements, which will reduce the fuel consumption.","PeriodicalId":224246,"journal":{"name":"2013 MTS/IEEE OCEANS - Bergen","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125617103","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":"On path loss of NLOS underwater wireless optical communication links","authors":"Shijian Tang, Yuhan Dong, Xuedan Zhang","doi":"10.1109/OCEANS-BERGEN.2013.6608002","DOIUrl":"https://doi.org/10.1109/OCEANS-BERGEN.2013.6608002","url":null,"abstract":"In practical underwater wireless optical communications (UWOC), the non-line-of-sight (NLOS) link which utilizes the sea surface to reflect the beam has been presented recently but not fully studied yet. In this paper, we investigate the path loss of NLOS UWOC links based on the Monte Carlo simulations taking the effects of both random sea surface slopes and scattering properties of seawater into account. Numerical results suggest that the random surface slopes induced by the wind may strongly corrupt the received signal. This detrimental effect can be dismissed by scattering light as the attenuation length increases where the multiple scattering light dominates in the received signal.","PeriodicalId":224246,"journal":{"name":"2013 MTS/IEEE OCEANS - Bergen","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122256370","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}
P. J. Thomas, G. Pedersen, A. Hide, A. Apostolidis, C. Huber, J. Hovdenes, A. Tengberg, P. Hall, D. Atamanchuk, R. Putnam, J. Putnam
{"title":"Optical gas monitoring in sea water: Robust reliable and highly flexible","authors":"P. J. Thomas, G. Pedersen, A. Hide, A. Apostolidis, C. Huber, J. Hovdenes, A. Tengberg, P. Hall, D. Atamanchuk, R. Putnam, J. Putnam","doi":"10.1109/OCEANS-BERGEN.2013.6608054","DOIUrl":"https://doi.org/10.1109/OCEANS-BERGEN.2013.6608054","url":null,"abstract":"This paper describes our progress towards the development of field deployable pCO2 and NH3 in water measurement technologies. The fluorescence lifetime based pCO2 technology described here has a wide dynamic range of 102-5 × 104 microatmospheres and has undergone numerous field trials that indicate suitability to a wide range of short and long term monitoring applications. The spectrophotometric NH3 technology described is in an earlier stage of development, and the characterization experiments performed to date show that the technology responds reversibly to ammonia concentrations at the low ppb level and could therefore be applicable to a wide range of applications within aquaculture and oceanography. The pCO2 and NH3 sensor prototypes used in these investigations are based on the same mechanical platform, that in future could also form the basis for other water quality monitoring technologies.","PeriodicalId":224246,"journal":{"name":"2013 MTS/IEEE OCEANS - Bergen","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132394920","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}
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