发布求助
文献互助 智能选刊 最新文献

Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418)最新文献

筛选
英文 中文
Multisensor mapping of the deep seafloor with the Autonomous Benthic Explorer 使用自主底栖生物探测器对深海进行多传感器测绘
Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418) Pub Date : 2000-05-23 DOI: 10.1109/UT.2000.852552
D. Yoerger, A. Bradley, H. Singh, B. Walden, M. Cormier, W. Ryan
{"title":"Multisensor mapping of the deep seafloor with the Autonomous Benthic Explorer","authors":"D. Yoerger, A. Bradley, H. Singh, B. Walden, M. Cormier, W. Ryan","doi":"10.1109/UT.2000.852552","DOIUrl":"https://doi.org/10.1109/UT.2000.852552","url":null,"abstract":"We used the Autonomous Benthic Explorer (ABE) to create maps of an active spreading center on the mid-ocean ridge at a depth of 2600 meters. We took advantage of ABEs precise navigation and bottom following capabilities and produced detailed bathymetric maps with a scanning sonar, and photo-mosaics using ABE's video snapshot system, and measured the temperature and optical backscatter of the water. Refinement of ABE's transponder fixes, based on using returns gathered at the vehicle, contributed to the consistency of the results.","PeriodicalId":397110,"journal":{"name":"Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121506388","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: 17
Application of the sliding mode fuzzy controller to the guidance and control of an autonomous underwater vehicle 滑模模糊控制器在自主水下航行器制导控制中的应用
Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418) Pub Date : 2000-05-23 DOI: 10.1109/UT.2000.852538
F. Chiu, J. Guo, C. Huang, W. Tsai
{"title":"Application of the sliding mode fuzzy controller to the guidance and control of an autonomous underwater vehicle","authors":"F. Chiu, J. Guo, C. Huang, W. Tsai","doi":"10.1109/UT.2000.852538","DOIUrl":"https://doi.org/10.1109/UT.2000.852538","url":null,"abstract":"Shows that a sliding mode fuzzy controller is quite satisfactory for the control and line of sight tracking performance of an autonomous underwater vehicle. The design method of the sliding mode fuzzy controller allows a systematic method to construct a set of membership functions, called shrinking-span membership functions and dilating-span membership functions, for a specific linguistic variable. This gives the controller design more convenience to deal with nonlinearities of the vehicle dynamics and the environmental disturbances. Effects of using different design parameters are evaluated through experiments.","PeriodicalId":397110,"journal":{"name":"Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125605550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
The "thinarray"; a lightweight, ultra-thin (8 mm OD) towed array for use from small vessels of opportunity “thinarray”;一种重量轻、超薄(外径8毫米)的拖曳阵列，适用于小型船舶
Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418) Pub Date : 2000-05-23 DOI: 10.1109/UT.2000.852514
J. Potter, E. Delaory, S. Constantin, S. Badiu
{"title":"The \"thinarray\"; a lightweight, ultra-thin (8 mm OD) towed array for use from small vessels of opportunity","authors":"J. Potter, E. Delaory, S. Constantin, S. Badiu","doi":"10.1109/UT.2000.852514","DOIUrl":"https://doi.org/10.1109/UT.2000.852514","url":null,"abstract":"Conventional towed arrays are typically 40-80 mm in diameter and weigh >1 kg/m, requiring facilities unavailable on small vessels and inconvenient for submarines. This work presents a design that uses miniature cylindrical ceramic sensors and surface mount electronics on an integrated multilayer PCB only 6 mm wide. A novel turbulence suppression technique is proposed, based on an assumption of near-isotropic turbulence structure scaling with the dimension of the towed body below a critical diameter. By making long and narrow sensors, turbulence noise is averaged incoherently while desired signals in the bandwidth up to 20 kHz are summed coherently, providing signal to turbulence noise gain. An 8 mm diameter prototype array has been constructed that can easily be handled by one person. Preliminary acoustic results are given and potential applications explored.","PeriodicalId":397110,"journal":{"name":"Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121722261","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: 7
Robust synthetic aperture processing in oceanic fluctuations 海洋波动中的鲁棒合成孔径处理
Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418) Pub Date : 2000-05-23 DOI: 10.1109/UT.2000.852516
Jun Hwan Kim, Ki Man Kim, W. Oh, K. C. Doh
{"title":"Robust synthetic aperture processing in oceanic fluctuations","authors":"Jun Hwan Kim, Ki Man Kim, W. Oh, K. C. Doh","doi":"10.1109/UT.2000.852516","DOIUrl":"https://doi.org/10.1109/UT.2000.852516","url":null,"abstract":"The previous synthetic aperture techniques have been investigated to increase signal gain, improve angular resolution and peak-to-sidelobe level ratios for towed line array sonar systems. However, the synthetic aperture method in this paper is performed for conformal array systems by mapping real elements on an axis to control like a linear array. The proposed method for the conformal array performs coherent processing of sub-aperture signals at successive time intervals in the beam domain via FFT transformations. This was confirmed by the simulation results and compared to the results from use of the synthetic aperture technique under the conformal array.","PeriodicalId":397110,"journal":{"name":"Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116480336","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
Distribution and interaction of elastic and electromagnetic waves in sea water 海水中弹性波与电磁波的分布及相互作用
Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418) Pub Date : 2000-05-23 DOI: 10.1109/UT.2000.852524
M. Mironenko, A. Alekseev, V. Korochentsev, V. Korochentsev, P.P. Unru
{"title":"Distribution and interaction of elastic and electromagnetic waves in sea water","authors":"M. Mironenko, A. Alekseev, V. Korochentsev, V. Korochentsev, P.P. Unru","doi":"10.1109/UT.2000.852524","DOIUrl":"https://doi.org/10.1109/UT.2000.852524","url":null,"abstract":"Regularities of parametric interaction of waves of various physical nature (mostly of acoustic wave of sound range and low frequency electromagnetic waves) under their joint propagation in conducting marine medium are considered On the basis of classic hydroacoustic equations of Navier-Stokes and of electrodynamic Maxwell's equations and Ohm's law the possibility of realization of the regularities mentioned above while solving practical tasks of applied hydroacoustics is substantiated.","PeriodicalId":397110,"journal":{"name":"Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123467887","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
Underwater structure inspection with laser light stripes 激光光条水下结构检测
Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418) Pub Date : 2000-05-23 DOI: 10.1109/UT.2000.852541
Chau-Chang Wang, S. Shyue, S. Cheng
{"title":"Underwater structure inspection with laser light stripes","authors":"Chau-Chang Wang, S. Shyue, S. Cheng","doi":"10.1109/UT.2000.852541","DOIUrl":"https://doi.org/10.1109/UT.2000.852541","url":null,"abstract":"As international trade is getting prosperous, commercial ports need to accommodate hundreds of vessels everyday. When a vessel berths the wharf carelessly, it is possible to cause some damage to the pier beneath the waterline without leaving any evidence. Generally, scuba divers are sent down with camera to take photos or video tapes of the underwater structure for further studies of the damage. We propose using a laser light stripe technique to overcome the problem of turbid water. From geometry we know that a straight line projected to a plane remains a straight line. On the other hand, if there are any concave or convex features on the plane, the projected line will deform accordingly. So we can extract information, such as position or depth of the concavity, from the deformation of the projected line. In our study, we project a laser beam stripe on the target and use a CCD camera to capture the image. With image processing, we can extract the profile of the cross section, thus, the overall 3D measurement of the target. We verify this idea with different shapes of objects submerged in different levels of turbid water in a test tank. Preliminary results indicate that this device can detect narrow gaps of 1 cm in NTU level 2.5 foul water from a distance of 60 cm with coverage of 60 cm wide.","PeriodicalId":397110,"journal":{"name":"Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418)","volume":"1423 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127441287","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: 15
The features of two forward looking sonars for ROV/UUV and their experimental results ROV/UUV两种前视声纳的特点及实验结果
Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418) Pub Date : 2000-05-23 DOI: 10.1109/UT.2000.852584
Sang Enfang, Su Longbin, Z. Jingyi, G. Peng, Wu Yanhe, Qiao Gang
{"title":"The features of two forward looking sonars for ROV/UUV and their experimental results","authors":"Sang Enfang, Su Longbin, Z. Jingyi, G. Peng, Wu Yanhe, Qiao Gang","doi":"10.1109/UT.2000.852584","DOIUrl":"https://doi.org/10.1109/UT.2000.852584","url":null,"abstract":"In this paper, the features of two new forward looking sonars for remotely operated vehicle/unmanned underwater vehicle (ROV/UUV) are described. These two sonars have different system structures: one is composed of a rectangular acoustic array and parallel DSP central processing unit; and the other one is composed of a cross-line array and single fast DSP board as a central processing unit. Both of them include other common and necessary components which have been modularized. The new software for high resolution acoustic imaging developed for both sonars are also presented. A comparison and analysis of experimental results from these two sonars is presented. Finally, conclusions based on a number of imaging experiments are given.","PeriodicalId":397110,"journal":{"name":"Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130571091","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: 5
Fast reactor system for underwater activities 水下活动快堆系统
Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418) Pub Date : 2000-05-23 DOI: 10.1109/UT.2000.852554
Akira Otsubo, K. Haga, Y. Kowata
{"title":"Fast reactor system for underwater activities","authors":"Akira Otsubo, K. Haga, Y. Kowata","doi":"10.1109/UT.2000.852554","DOIUrl":"https://doi.org/10.1109/UT.2000.852554","url":null,"abstract":"A compact nuclear power unit consisting of a liquid metal fast reactor (LMFR) system and a closed Brayton cycle power generation system was studied. Main specifications of the power unit are: 215 kWt thermal power, 40 kWe electric power, primary coolant=NaK(Na; 0.22, K;0.78), secondary coolant of mixture gas of He and Xe, total weight of 26.6 /spl times/103 kg, 5.2 m height, and 3500 m depth of setting location. The power unit is used as a power source for an unmanned sea-bottom base. The base with the power unit is used for measuring the temperature and velocity from the sea bottom to the surface, heat flux from the sea bottom, gravity, magnetic field, chemical composition of the sea water, etc. A more detail explanation regarding the application of the base for meteorological research is given. In the next century, there is a great possibility that several power units will be needed and set in the Pacific to observe the temperature rise caused by CO/sub 2/ increase and other meteorological phenomena.","PeriodicalId":397110,"journal":{"name":"Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122214906","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 development of a reliable deep sea acoustic release system 研制可靠的深海声释放系统
Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418) Pub Date : 2000-05-23 DOI: 10.1109/UT.2000.852576
Y. Oh, Chul-Won Lee, Jong-sik Woo
{"title":"The development of a reliable deep sea acoustic release system","authors":"Y. Oh, Chul-Won Lee, Jong-sik Woo","doi":"10.1109/UT.2000.852576","DOIUrl":"https://doi.org/10.1109/UT.2000.852576","url":null,"abstract":"A more effective and reliable way of recognizing the specific acoustic signal is introduced. The detailed schematic and processes with respect to the receiving, recognizing, and emitting of the sound from the surface ship are explained. For this system to be a practical one, an actuator (or releaser) containing the relevant boards is designed and fabricated. This method has been proven to be quite reliable through repeated sea trials.","PeriodicalId":397110,"journal":{"name":"Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125133057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Search and recovery of the H-II Rocket Flight No. 8 engine H-II火箭8号引擎的搜索和恢复
Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418) Pub Date : 2000-05-23 DOI: 10.1109/UT.2000.852509
H. Momma, M. Watanabe, K. Mitsuzawa, K. Danno, Masahiko Ida, M. Arita, I. Ujino
{"title":"Search and recovery of the H-II Rocket Flight No. 8 engine","authors":"H. Momma, M. Watanabe, K. Mitsuzawa, K. Danno, Masahiko Ida, M. Arita, I. Ujino","doi":"10.1109/UT.2000.852509","DOIUrl":"https://doi.org/10.1109/UT.2000.852509","url":null,"abstract":"In November 1999, the H-II Rocket Flight No. 8 was launched from Tanegashima Space Center. However, the first stage engine stopped in 4 minutes. Consequently, the engine dropped 380 nautical miles off Izu-Ogasawara Islands in 3000 m of water. The JAMSTEC was requested to search for the first stage engine in order to identify the cause of the failure. The search area was a box, 3.3 km in width and 26 km in length. First of all, the survey using 40 kHz side scan sonar on board the ROV Kaiko was carried out. After seven days of sonar survey, a probable contact was obtained. It was the engine section. However, the main engine was not discovered yet. Then, the JAMSTEC/Deep Tow sonar was deployed in the second cruise. On the second day, sonar contacts were obtained approximately 15 km southeast of the engine section. On December 24, 1999, the main engine was discovered by the deep tow camera. In the third cruise, the nozzle skirt of the main engine was discovered by the ROV Dolphin-3K. Finally, the main engine was recovered approximately two months after the launch.","PeriodicalId":397110,"journal":{"name":"Proceedings of the 2000 International Symposium on Underwater Technology (Cat. No.00EX418)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125141068","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
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
请完成安全验证×
相关产品
×
本文献相关产品
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 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信