Proceedings of OCEANS '93最新文献_第9页

Reconstruction and enhancement of sea-bed topography by using 2-D signal processing 基于二维信号处理的海底地形重建与增强

Proceedings of OCEANS '93 Pub Date : 1993-10-18 DOI: 10.1109/OCEANS.1993.326123

H. Wong, A. Antoniou

引用次数: 2

An integrated system for navigation and positioning of an ROV for scientific exploration 一种用于科学探测的ROV导航定位集成系统

Proceedings of OCEANS '93 Pub Date : 1993-10-18 DOI: 10.1109/OCEANS.1993.326147

J. Illman, H. Milburn, R. Macdonald

{"title":"An integrated system for navigation and positioning of an ROV for scientific exploration","authors":"J. Illman, H. Milburn, R. Macdonald","doi":"10.1109/OCEANS.1993.326147","DOIUrl":"https://doi.org/10.1109/OCEANS.1993.326147","url":null,"abstract":"The NOAA Vents program and Canada's Pacific Geoscience Centre and Institute of Ocean Sciences have recently collaborated in an effort to utilize Canada's HYSUB 5000 ROV in the study of hydrothermal venting and seafloor processes along a mid-ocean ridge. A navigation system has been developed to geodetically position the ROV over rough terrain in deep water using a long baseline acoustic net, differential GPS and software tailored to the needs of the operators and scientists. Ship positioning and station-keeping is a vital part of successful ROV operations and special considerations were given for operation from a non-dynamically positioned research vessel. With the growing acceptance of remotely operated vehicles for performing tasks previously allocated to manned submersibles, the demands on the navigation system have increased. To date, the navigation system has produced good geodetic results while the ROV has successfully sampled hot water vents, connected to a deeply moored instrument package for data retreival, collected biological samples and photographed large areas of the seafloor-all tasks previously performed by ALVIN in the VENTS and RIDGE research programs.<<ETX>>","PeriodicalId":130255,"journal":{"name":"Proceedings of OCEANS '93","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117023268","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

Distributed data and computing system on an ROV designed for ocean science 海洋科学用ROV分布式数据与计算系统

Proceedings of OCEANS '93 Pub Date : 1993-10-18 DOI: 10.1109/OCEANS.1993.326198

M. Chaffey, A. Pearce, R. Herlien

引用次数: 10

Acoustic navigation for Arctic under-ice AUV missions 北极冰下AUV任务的声学导航

Proceedings of OCEANS '93 Pub Date : 1993-10-18 DOI: 10.1109/OCEANS.1993.326007

M. Deffenbaugh, H. Schmidt, J. Bellingham

引用次数: 28

Acoustic thermometry for Arctic Ocean climate 北冰洋气候的声测温

Proceedings of OCEANS '93 Pub Date : 1993-10-18 DOI: 10.1109/OCEANS.1993.326001

P. Mikhalevsky, R. Muench, A. Baggeroer

引用次数: 0

Seabed classification from multibeam echosounder data using statistical methods 用统计方法对多波束测深数据进行海底分类

Proceedings of OCEANS '93 Pub Date : 1993-10-18 DOI: 10.1109/OCEANS.1993.326191

R. B. Huseby, O. Milvang, A. Solberg, K. W. Bjerde

引用次数: 15

The Continental and Oceanographic Data Information System (CODIS) 大陆和海洋数据信息系统(CODIS)

Proceedings of OCEANS '93 Pub Date : 1993-10-18 DOI: 10.1109/OCEANS.1993.326158

C. Blyth, M. A. Caldwell, T. Fyles, B. Smiley

{"title":"The Continental and Oceanographic Data Information System (CODIS)","authors":"C. Blyth, M. A. Caldwell, T. Fyles, B. Smiley","doi":"10.1109/OCEANS.1993.326158","DOIUrl":"https://doi.org/10.1109/OCEANS.1993.326158","url":null,"abstract":"The Continental and Oceanographic Data Information System (CODIS) is a custom software/database application developed to provide an on-line computer catalogue or inventory of scientific data gathered during environmental studies in Canadian West Coast and Arctic waters and in the Fraser River. CODIS was developed in conjunction with Fisheries and Oceans Canada and the University of Victoria. Information about the disciplines: ocean chemistry, physical oceanography, fish, mammals, zoobenthos, plankton and continental chemistry, with the intent of including more disciplines in the future. The purpose of the inventory was to assemble, condense and appraise all available documentation in order to assist the researcher or environmental manager in identifying and locating the most suitable data sets for specific applications. The system includes data from the Fisheries and Oceans Canada, Arctic Data Compilation and Appraisal and West Coast Data Compilation and Appraisal catalogues and data collected by the University of Victoria. The information has been assembled from a variety of sources. The system includes information concerning data quality based on suitability of methods and completeness of documentation. The data quality rating is an objective scale that grades data according to their ability to be compared to data described in other data sets. The purpose of the data rating is to provide users with a guide to the level of confidence they can place on conclusions drawn from the data and it provides an indication of how applicable the data are for other purposes. CODIS permits the data to be edited while maintaining strict adherence to data quality protocols.<<ETX>>","PeriodicalId":130255,"journal":{"name":"Proceedings of OCEANS '93","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122465649","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

A better way to navigate on deep sea floors 这是在深海中更好的导航方式

Proceedings of OCEANS '93 Pub Date : 1993-10-18 DOI: 10.1109/OCEANS.1993.326146

F. Parthiot, J. Denis

{"title":"A better way to navigate on deep sea floors","authors":"F. Parthiot, J. Denis","doi":"10.1109/OCEANS.1993.326146","DOIUrl":"https://doi.org/10.1109/OCEANS.1993.326146","url":null,"abstract":"IFREMER-French Institute for Sea Exploration and Exploitation-is currently operating manned submersibles, towed sonars and ROVs down to 6000 m. IFREMER are replacing their positioning system resting on long base line (LBL) by a new positioning system called POSIDONIA which is under development at the company group Thomson Sintra ASM and Mors Environment. This replacement aims to reduce operators time and overall costs by improving accuracy, reliability and flexibility in comparison with the existing systems. To achieve these characteristics, the POSIDONIA positioning system is of a new breed which combines a short base line (SBL) and an ultra short base line (USBL). It has been designed to operate in noisy environments and get rid of multipath effects, to compensate for the lack of precise radio navigation, and generally to comply with the various task requirements. Therefore, not only has the acoustic signal processing been optimized, but also the beacon functionalities to give full versatility. In addition, the need of a high precision vertical and heading reference unit (VHRU), to make up for the vessel attitude, has induced the definition of a hybrid VHRU based on both GPS and inertial sensors.<<ETX>>","PeriodicalId":130255,"journal":{"name":"Proceedings of OCEANS '93","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124029768","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

Underwater acoustic communications 水声通信

Proceedings of OCEANS '93 Pub Date : 1993-10-18 DOI: 10.1109/OCEANS.1993.326226

R. Coates

引用次数: 23

Acoustic and microwave backscattering of the sea surface 海面的声波和微波后向散射

Proceedings of OCEANS '93 Pub Date : 1993-10-18 DOI: 10.1109/OCEANS.1993.326059

B. Nutzel, H. Herwig, A. Schmidt

{"title":"Acoustic and microwave backscattering of the sea surface","authors":"B. Nutzel, H. Herwig, A. Schmidt","doi":"10.1109/OCEANS.1993.326059","DOIUrl":"https://doi.org/10.1109/OCEANS.1993.326059","url":null,"abstract":"Results of the experiment SAXON Phase 2 which was conducted in November 1991 at the German Research Platform NORDSEE are presented. The experiment was designed to measure the acoustic and electromagnetic backscattering strength of the sea surface simultaneously and at the same sonar and radar wavelength. The grazing angle dependence was investigated at angles from 20/spl deg/ to 70/spl deg/. Backscattering from the same spot of the sea surface was measured at a grazing angle of 18/spl deg/ for both systems. The sonar frequencies were 50, 26.5, and 5 kHz corresponding to radar frequencies of 10, 5.3, and 1 GHz (X-, C-, and L-band), respectively. Data were collected at wind speeds ranging from 0 to 21 m/s. The results exhibit excellent correlation between sonar and radar backscattering in the low wind speed regime at all frequencies. At higher wind speeds, bubbles caused by breaking waves are the dominant acoustic backscattering mechanism at high sonar frequencies. In this case both systems no longer see the same scatterers and the correlation decreases. The parameter combinations of wind speed and sonar and radar frequency, for which the backscatter occurs from the sea surface only, are given for a grazing angle of 45.<<ETX>>","PeriodicalId":130255,"journal":{"name":"Proceedings of OCEANS '93","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124576125","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