OCEANS 2008 - MTS/IEEE Kobe Techno-Ocean最新文献

{"title":"A recursive approach to Multiscalar Data Interpolation of sparsely sampled sea surface measurements at different spatial resolutions","authors":"R. Reig-Bolaño, E. García-Ladona, V. Parisi, P. Martí-Puig","doi":"10.1109/OCEANSKOBE.2008.4530949","DOIUrl":"https://doi.org/10.1109/OCEANSKOBE.2008.4530949","url":null,"abstract":"In many oceanographic studies there is a need to reconstruct a signal from a set of sparse measurements. We propose an algorithm to iteratively approximate the intermediate values between irregularly sampled data, when a set of sparse values at coarser scales is known. This is possible when there is an approximation to a model for the multiresolution decomposition/reconstruction scheme of the dataset. Although the problem is ill-posed, this approach gives an easy scheme to interpolate the values of a signal using all the information available at different resolutions. This reconstruction method could be used as an extension of any interpolation method to optimize the multiresolution sparse data fusion. A simplified one-dimensional case illustrates the explanation; it is an algorithm based on a recursive scheme of a fast dyadic wavelet transform and its inversion, using a filter bank analysis/synthesis implementation for the wavelet transforms model. This can be a basis method suitable for applied cases where there are sparse measures from different instruments that are sensing the same scene simultaneously with several resolutions. Extensions of the method to sparse multiresolution dataset with higher dimensions (images or vector fields) also offer some promising preliminary results.","PeriodicalId":368672,"journal":{"name":"OCEANS 2008 - MTS/IEEE Kobe Techno-Ocean","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124045582","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":"Open-standard ATCA and MicroTCA Platforms for Ocean Observatories","authors":"J. Walrod","doi":"10.1109/OCEANSKOBE.2008.4530941","DOIUrl":"https://doi.org/10.1109/OCEANSKOBE.2008.4530941","url":null,"abstract":"Although custom and proprietary electronic packaging is common in undersea systems, future ocean observatories can be improved with open-standard platforms. Modern network-centric platforms such as Advanced Telecom Computing Architecture (ATCA) and MicroTCA (collectively referred to as xTCA) are readily available to provide cost- effective systems with state-of-the-art performance, scalability, modularity, expansion, management, and reliability. The xTCA specifications were developed to provide high operational availability (e.g., 99.999%) and advanced performance (e.g., Terabit/s) in networked systems. These platforms provide advanced fault-tolerant features such as redundant power, redundant networking, redundant timing, hot swap, ESD protection, fault isolation, power isolation and protection, EMI shielding, and platform management and monitoring. xTCA equipment has been deployed in many applications including sensing, data communications, instrumentation, control, data acquisition, computing, signal processing, servers, networking, wireless, and data storage. More than 100 organizations currently support xTCA including SAIC, Intel, Motorola, Nortel, Alcatel-Lucent, Fujitsu, Sun Microsystems, Lockheed-Martin, the U.S. Department of Defense, and the U.S. Department of Energy. Open platforms can be leveraged by engineers to build better systems, and by system operators to minimize total cost of ownership (TCO) and operational downtime. In this paper, we discuss the engineering features of xTCA platforms for ocean observatory equipment such as junction boxes, nodes, repeaters, buoys, vehicles, and science payloads. To date our team has built and delivered some 35 xTCA-based payloads for undersea use. Some of these payloads have been in operation for more than two years, providing reliable instrumentation networks in the ocean. We note that these platforms are also suitable for dry-end systems such as optical termination equipment, data management and archiving, system timing, network backbones, data servers, system control and monitoring, and data processing. Finally, we recommend that the ocean observatory community establish requirements for open-standard electronic platforms in future undersea equipment to better facilitate the successful operation and open architecture objectives of these important new scientific infrastructures.","PeriodicalId":368672,"journal":{"name":"OCEANS 2008 - MTS/IEEE Kobe Techno-Ocean","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126546538","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":"Investigation of Sessile Organisms on a Box-Type Structure Made of Iron Slag Concrete","authors":"K. Otsuka, K. Tanaka, Chen Li","doi":"10.1109/OCEANSKOBE.2008.4530954","DOIUrl":"https://doi.org/10.1109/OCEANSKOBE.2008.4530954","url":null,"abstract":"A box-type structure made of iron slag concrete named \"E-Box-O\" was installed at the experimental site in Amagasaki Harbor located in northeast part of Osaka Bay. In order to estimate time histories of sessile organism biomasses and the carbon and nitrogen fixation rates of E-Box-O, covered ratio observations and biomass measurements were carried out. The results of investigations showed that the seasonal variations of sessile organism biomasses are very large, and the carbon and nitrogen fixation rates of E-Box-O were estimated as 1.2 - 4.7 kg- C/m2/y and 0.08 - 0.39 kg-N/m2/y4, respectively.","PeriodicalId":368672,"journal":{"name":"OCEANS 2008 - MTS/IEEE Kobe Techno-Ocean","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132016412","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":"Development of Propagative Function-Added Fishing Ports","authors":"G. Nakanishi, A. Sato, K. Watanabe, T. Okano","doi":"10.1109/OCEANSKOBE.2008.4530959","DOIUrl":"https://doi.org/10.1109/OCEANSKOBE.2008.4530959","url":null,"abstract":"In addition to ensuring safe berth of fishing boats and landing marine catch, fishing ports are sometimes allowed to have propagative functions (e.g. shelter function, feeding function, etc.) for fish and shellfish. We implemented a quantitative survey on the propagative function of fishing port facilities, and conducted basic verification tests related to facility improvement to enhance the propagative functions of fishing port facilities.","PeriodicalId":368672,"journal":{"name":"OCEANS 2008 - MTS/IEEE Kobe Techno-Ocean","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132490076","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":"Buried target detection based on time reversal by probing beam","authors":"Jianlong Li, Xiang Pan, Liming Yan, Hangfang Zhao","doi":"10.1109/OCEANSKOBE.2008.4530947","DOIUrl":"https://doi.org/10.1109/OCEANSKOBE.2008.4530947","url":null,"abstract":"Buried target detection under the background of intensive reverberation in shallow water is a complicated problem. As the target is buried, the echo of the active sonar is very weak and the echo-to-reverberation ratio is quite low. In the paper, the technique of buried target detection based on time reversal (TR) by probing beam without a probe source (PS) is discussed. Firstly, the technique of TR transmission without a PS is presented. Secondly, the procedures of echo signal processing is introduced. Finally, The waveguide experiment provides a practical implementation guideline to apply the techniques to buried target detection.","PeriodicalId":368672,"journal":{"name":"OCEANS 2008 - MTS/IEEE Kobe Techno-Ocean","volume":"420 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132524863","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":"Deep Scattering Layer Observation by Acoustic Correlation Current Profiler","authors":"Feng Lei, Changhong Wang, Gong Lihui, Yuling Wang, Qiu Wei, Kuai Duojie, Xiangjun Zhang","doi":"10.1109/OCEANSKOBE.2008.4531031","DOIUrl":"https://doi.org/10.1109/OCEANSKOBE.2008.4531031","url":null,"abstract":"Acoustic correlation current profiler (ACCP) was proposed to observe deep scattering layer (DSL). Several important parameters of ACCP could be used to observe DSL, such as the strength of the backscattering, the vertical velocity of current profile and the cross correlation function. Based on these parameters, 23 kHz prototype ACCP was used to observe DSL in sea trials in South China Sea. Results showed that it was feasible to observe DSL by ACCP.","PeriodicalId":368672,"journal":{"name":"OCEANS 2008 - MTS/IEEE Kobe Techno-Ocean","volume":"43 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131831057","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":"Interferometric Sonar Signal Simulation through Tube Tracing","authors":"C. Sintes, D. Guériot","doi":"10.1109/OCEANSKOBE.2008.4531011","DOIUrl":"https://doi.org/10.1109/OCEANSKOBE.2008.4531011","url":null,"abstract":"Simulating realistic sonar data is crucial for tuning detection and classification algorithms according to environment and acquisition characteristics. Moreover, robustness of performances estimation and prediction applications can be greatly enhanced as soon as such a simulation tool provides both a modular underwater world representation (multiple sensors, environments and acquisition conditions) and a selection of several computational engines (ray theory, parabolic equation ...). Therefore, we developed such a framework for simulators, allowing both scene design and computational engine choice. Within it, two engines (one for rays, one for tubes) has been successfully implemented and realistic simulations obtained, as shown in the presented simulated sonar images. Moreover, a first attempt in simulating interferometric signals has also been carried out introducing extended scatterers in order to integrate phenomena like sensor decorrelation.","PeriodicalId":368672,"journal":{"name":"OCEANS 2008 - MTS/IEEE Kobe Techno-Ocean","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126593485","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":"Computer-Based Control of Deep-Sea Manipulators","authors":"M. Hildebrandt, J. Albiez, F. Kirchner","doi":"10.1109/OCEANSKOBE.2008.4531026","DOIUrl":"https://doi.org/10.1109/OCEANSKOBE.2008.4531026","url":null,"abstract":"Traditionally, control of deep-sea manipulators happens in a master-slave fashion. The resulting necessity of a specially trained operator on-site severely limits the disposability of such systems. Further even simple tasks require significant amounts of time due to a number of factors, e.g. the operator's limited view of the manipulation environment or the low level of intuitive sensory feedback of a manipulator's actions. The CManipulator project of the DFKI-Lab Bremen, Germany, addresses these problems by utilising state-of-the-art computing algorithms to allow the partial automation of common tasks in deep-sea manipulation. This paper focuses on the basic principles and problems of such control structures on the example of the widely used hydraulic Orion 7P by Schilling Robotics.","PeriodicalId":368672,"journal":{"name":"OCEANS 2008 - MTS/IEEE Kobe Techno-Ocean","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130792672","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":"Numerical Study on the Hydrological Change due to Water Level Rising in the Caspian Sea","authors":"J. Yang, D. Kitazawa, R. Yamanaka","doi":"10.1109/OCEANSKOBE.2008.4531080","DOIUrl":"https://doi.org/10.1109/OCEANSKOBE.2008.4531080","url":null,"abstract":"In the Caspian Sea, the deterioration of the ecosystem has been increasingly worried due to the development of offshore oil and natural gas resources. In addition, the rising of water level causes the oil leakage from the coastal old oil well and changes the water current, resulting in an uncertain dispersion of oil pollutants. In the present study, the change in the fields of water current was discussed by using a three- dimensional numerical model called MEC (marine environmental committee) Ocean Model, which was developed by the Japanese Society of Naval Architects and Ocean Engineering. As a result of verification of the numerical model the stronger current was found along the southeast coast of the Caspian Sea, while the remarkable jet-like structure was not found in the shallow waters. If the horizontal distribution of wind stress was taken into account, the cyclonic circulation found in the middle of the Caspian Sea was reproduced in February- However, it should be noted that the basic feature of the water current field is also based on the density-driven current due to the surface heat flux and the inflow of rivers. Finally, the effects of the change in the bathymetry due to water level rising and of the Kara Bogaz Gol were negligible, while a lot of Caspian water may flow into the Kara Bogaz Gol and the basic current field may be changed in the Caspian Sea if the water current directs eastward due to the wind stress. The present study is the first step of the numerical study on the Caspian environment. As future studies, high resolution of grids, density-driven current, and a lower-trophic ecosystem model will be taken into account in the numerical model.","PeriodicalId":368672,"journal":{"name":"OCEANS 2008 - MTS/IEEE Kobe Techno-Ocean","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132831638","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":"Kuroko-type Seafloor Hydrothermal Deposit Mining - The Geology, Technology, Environment, and Economy","authors":"S. Scott, T. Yamazaki, J. Baulch","doi":"10.1109/OCEANSKOBE.2008.4530882","DOIUrl":"https://doi.org/10.1109/OCEANSKOBE.2008.4530882","url":null,"abstract":"The Kuroko-type seafloor hydrothermal deposits, sometimes known as seafloor massive sulfides (SMS), are currently the hottest business targets in ocean mining field, because metal prices included in the deposits tend to be several times or more expensive than the ones a few years ago. Therefore, two private venture companies have been very active for the commercial developments these years. The many attractive deposits have been found in the Western Pacific areas including Japan's EEZ. This tutorial covers all the aspects for a fundamental understanding of the Kuroko-type seafloor hydrothermal deposit mining. Mineralization and formation process of the deposits and the structure are introduced. The attractiveness as mineral resources is also highlighted. Engineering properties of the deposits and the expected mining technologies are summarized. A preliminary analysis of the mining economy is introduced. Some environmental problems to be solved prior to the commercial scale mining are discussed. Actual field activities and business situation of a private venture company are introduced from the exploration manager.","PeriodicalId":368672,"journal":{"name":"OCEANS 2008 - MTS/IEEE Kobe Techno-Ocean","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127817974","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}