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Proceedings of the IEEE Fourth Working Conference on Current Measurement最新文献

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The VEKTOR-AKWA, an acoustic current meter for use in 3-dimensional dynamic flows VEKTOR-AKWA，一种用于三维动态流动的声学电流计
Proceedings of the IEEE Fourth Working Conference on Current Measurement Pub Date : 1990-04-03 DOI: 10.1109/CURM.1990.110898
H.C. Botma
{"title":"The VEKTOR-AKWA, an acoustic current meter for use in 3-dimensional dynamic flows","authors":"H.C. Botma","doi":"10.1109/CURM.1990.110898","DOIUrl":"https://doi.org/10.1109/CURM.1990.110898","url":null,"abstract":"An acoustic current meter for measurements in omnidirectional and dynamic flow phenomena, called the VEKTOR-AKWA, is discussed. Design considerations and a short description of the instrument are given. Results of the omnidirectional performance in steady flows are presented in detail. Results of dynamic tests are mentioned briefly.<<ETX>>","PeriodicalId":364128,"journal":{"name":"Proceedings of the IEEE Fourth Working Conference on Current Measurement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121976522","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
High-speed, real-time data acquisition for vector measuring current meters 高速，实时数据采集矢量测量电流表
Proceedings of the IEEE Fourth Working Conference on Current Measurement Pub Date : 1990-04-03 DOI: 10.1109/CURM.1990.110901
M. M. Park, R. Singer, A. Plueddemann, R. Weller
{"title":"High-speed, real-time data acquisition for vector measuring current meters","authors":"M. M. Park, R. Singer, A. Plueddemann, R. Weller","doi":"10.1109/CURM.1990.110901","DOIUrl":"https://doi.org/10.1109/CURM.1990.110901","url":null,"abstract":"An integrated hardware and software approach used to provide real-time data acquisition and display of vector measuring current meter (VMCM) data at high sample rates is described. The hardware component consists of a circuit board in the VMCM that captures the relatively low-speed VMCM data output, stores it, and retransmits it at high speed in response to a request from the data acquisition computer. A four-day data acquisition run shows that the system is capable of sampling, displaying, and storing data from multiple arrays of VMCMs at two-second intervals.<<ETX>>","PeriodicalId":364128,"journal":{"name":"Proceedings of the IEEE Fourth Working Conference on Current Measurement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117011039","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
Experience with a multi-depth scintillation flowmeter in the Fraser estuary 在弗雷泽河口使用多深度闪烁流量计的经验
Proceedings of the IEEE Fourth Working Conference on Current Measurement Pub Date : 1990-04-03 DOI: 10.1109/CURM.1990.110916
D. Lemon, D. Farmer
{"title":"Experience with a multi-depth scintillation flowmeter in the Fraser estuary","authors":"D. Lemon, D. Farmer","doi":"10.1109/CURM.1990.110916","DOIUrl":"https://doi.org/10.1109/CURM.1990.110916","url":null,"abstract":"A current-measurement experiment using the method of space-time acoustic scintillation is described. The scintillation flowmeter measures the average current along the depth of the acoustic path, in real time. Three such paths are used at nominal depths of 5 m, 6.5 m, and 9 m to obtain time series of the flow profile from which transport may be inferred. The scintillation method, instruments, and results are discussed. Comparison of current measurements from a launch show the scintillation data to be fully consistent, although difficulties in obtaining the launch data results in their being somewhat scattered.<<ETX>>","PeriodicalId":364128,"journal":{"name":"Proceedings of the IEEE Fourth Working Conference on Current Measurement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123888083","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: 8
Design and tests of a trawl-resistant package for ADCP's ADCP抗拖网包的设计与试验
Proceedings of the IEEE Fourth Working Conference on Current Measurement Pub Date : 1990-04-03 DOI: 10.1109/CURM.1990.110911
J.-G. Dessureault, D. Belliveau, S. W. Young
{"title":"Design and tests of a trawl-resistant package for ADCP's","authors":"J.-G. Dessureault, D. Belliveau, S. W. Young","doi":"10.1109/CURM.1990.110911","DOIUrl":"https://doi.org/10.1109/CURM.1990.110911","url":null,"abstract":"A package designed to protect an RDI acoustic Doppler current profiler (ADCP) for deployment in fishing areas is described. The package was tested and survived several passages of a trawl. The package has the shape of a truncated pyramid with a base 4 m by 3.3 m and a height of 53 cm. The housing, its deployment method, and some field test results are described. Some acoustic measurements were made to ascertain the effect of the housing on the beam pattern. The results show that this design can protect the instrument from bottom trawls and the acoustic beams are minimally affected by the plastic plate in front of the instrument.<<ETX>>","PeriodicalId":364128,"journal":{"name":"Proceedings of the IEEE Fourth Working Conference on Current Measurement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128972286","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: 4
Intercomparison of current measuring technology for coastal dispersion problems 海岸色散问题现有测量技术的比较
Proceedings of the IEEE Fourth Working Conference on Current Measurement Pub Date : 1990-04-03 DOI: 10.1109/CURM.1990.110888
D. Prandle
{"title":"Intercomparison of current measuring technology for coastal dispersion problems","authors":"D. Prandle","doi":"10.1109/CURM.1990.110888","DOIUrl":"https://doi.org/10.1109/CURM.1990.110888","url":null,"abstract":"Measurements which were taken to provide data for the validation of numerical models to simulate dispersion in the coastal zone are discussed. Results of currents in a near-shore region measured by HF ocean surface current radar, moored current meters, shipborne acoustic Doppler profilers, and drifting drogues are discussed. Each instrument provides measurements that are useful in the development of numerical models to simulate the tidal-, wind-, and density-driven circulations. In general all of these instruments are reliable and accurate. Specific applications for which each is most appropriate are identified.<<ETX>>","PeriodicalId":364128,"journal":{"name":"Proceedings of the IEEE Fourth Working Conference on Current Measurement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125683034","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
Measuring wave direction using upward-looking Doppler sonar 用向上看的多普勒声纳测量波浪方向
Proceedings of the IEEE Fourth Working Conference on Current Measurement Pub Date : 1990-04-03 DOI: 10.1109/CURM.1990.110912
E. Terray, H. Krogstad, P. Cabrera, R. Gordon, A. Lohrmann
{"title":"Measuring wave direction using upward-looking Doppler sonar","authors":"E. Terray, H. Krogstad, P. Cabrera, R. Gordon, A. Lohrmann","doi":"10.1109/CURM.1990.110912","DOIUrl":"https://doi.org/10.1109/CURM.1990.110912","url":null,"abstract":"Numerically simulated wave data are used to estimate the performance characteristics of conventional, upward-looking acoustic Doppler current profilers (ADCPs) for measuring wave direction. Results from a field deployment in shallow water are presented. Measurement principles are discussed. The overall conclusion is that bottom-mounted ADCPs in depths of up to 100 m are likely to be capable of resolving direction for the energy-containing waves.<<ETX>>","PeriodicalId":364128,"journal":{"name":"Proceedings of the IEEE Fourth Working Conference on Current Measurement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113975565","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: 20
Deep ocean acoustic Doppler current profiling 深海声学多普勒洋流分析
Proceedings of the IEEE Fourth Working Conference on Current Measurement Pub Date : 1990-04-03 DOI: 10.1109/CURM.1990.110905
E. Firing, R. Gordon
{"title":"Deep ocean acoustic Doppler current profiling","authors":"E. Firing, R. Gordon","doi":"10.1109/CURM.1990.110905","DOIUrl":"https://doi.org/10.1109/CURM.1990.110905","url":null,"abstract":"A standard 300-kHz self-contained acoustic Doppler current profiler (ADCP) which was mounted with a CTD on a rosette sampler and used to obtain relative velocity profiles over the full ocean depth range is described. The unknown motion of the ADCP-CTD package is removed by averaging individual vertical shear profiles in depth bins and then integrating over the water column to get a velocity profile relative to an unknown constant of integration. The resulting profile is useful at scales of a few hundred metres, but has errors that accumulate to 10-20 cm/s over a few thousand metres. Errors at low wavenumber are found to be considerably larger than the calculated lower bound, but the information at higher wavenumbers is still of scientific value.<<ETX>>","PeriodicalId":364128,"journal":{"name":"Proceedings of the IEEE Fourth Working Conference on Current Measurement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130913365","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: 67
Velocity errors associated with using short pulse lengths in a 150-kHz acoustic Doppler current profiler 在150-kHz声学多普勒电流分析器中使用短脉冲长度的速度误差
Proceedings of the IEEE Fourth Working Conference on Current Measurement Pub Date : 1990-04-03 DOI: 10.1109/CURM.1990.110910
D. Belliveau, J. Loder
{"title":"Velocity errors associated with using short pulse lengths in a 150-kHz acoustic Doppler current profiler","authors":"D. Belliveau, J. Loder","doi":"10.1109/CURM.1990.110910","DOIUrl":"https://doi.org/10.1109/CURM.1990.110910","url":null,"abstract":"Results from three deployments of an RD instruments RD SC0150 acoustic Doppler current profiler (ADCP) are presented. Simultaneous measurements with a ship-mounted (Ametek Straza) ADCP and moored Aanderaa current meters during a deployment on Georges Bank show that the three systems resolved the main features of the dominant tidal flow, but with some rate discrepancies. Examination of the discrepancies indicates that the RDI data were degraded by transmit skew errors, Doppler tracking problems in the presence of high shear and low backscatter, and other minor instrument problems. The resulting inaccuracies were exacerbated by the use of short pulse lengths. Large vertical and error velocities in the Georges Bank data set accounted for some, but not all, of the degradations. Spatial structures in the near-future flow field and degradation of the (paddle-wheel) Aanderaa rate measurement also contributed to the discrepancies.<<ETX>>","PeriodicalId":364128,"journal":{"name":"Proceedings of the IEEE Fourth Working Conference on Current Measurement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128612249","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: 4
A current meter with intelligent data system, environmental sensors and real-time telemetry 具有智能数据系统、环境传感器和实时遥测的电流表
Proceedings of the IEEE Fourth Working Conference on Current Measurement Pub Date : 1990-04-03 DOI: 10.1109/CURM.1990.110893
J. Irish, G. Needell, K. E. Morey, J. Wood, K. Baldwin
{"title":"A current meter with intelligent data system, environmental sensors and real-time telemetry","authors":"J. Irish, G. Needell, K. E. Morey, J. Wood, K. Baldwin","doi":"10.1109/CURM.1990.110893","DOIUrl":"https://doi.org/10.1109/CURM.1990.110893","url":null,"abstract":"A current meter which measures water velocity, temperature, conductivity, pressure, and suspended sediment concentrations is described. It utilizes a data system that allows more complex sampling programs. User-friendly software allows easy system configuration for different deployment. Two instruments have been tested in a bottom-mounted configuration. For one configuration, the current meter communicated via a hardwire link to a buoy which, in turn, had a packet radio link to a ship. In the second, buoyant data capsules on the bottom instrument are periodically released, rise to the surface, and transmit data from the bottom instrument to shore via ARGOS. These telemetry links transmit data and check the operation of the remote instrument to alert the user to unusual environmental conditions or instrumental problems.<<ETX>>","PeriodicalId":364128,"journal":{"name":"Proceedings of the IEEE Fourth Working Conference on Current Measurement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124460512","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
Gyre-scale current measurements using reciprocal acoustic transmission 利用互反声传输的环流尺度电流测量
Proceedings of the IEEE Fourth Working Conference on Current Measurement Pub Date : 1990-04-03 DOI: 10.1109/CURM.1990.110892
P. Worcester, B. Dushaw, B. Howe
{"title":"Gyre-scale current measurements using reciprocal acoustic transmission","authors":"P. Worcester, B. Dushaw, B. Howe","doi":"10.1109/CURM.1990.110892","DOIUrl":"https://doi.org/10.1109/CURM.1990.110892","url":null,"abstract":"Experiments conducted at steadily increasing ranges to explore the feasibility of using reciprocal acoustic transmissions to measure currents in the midocean are discussed. The relevant theory is given, followed by a description of the experiment. Acoustically derived tidal currents and subinertial currents are compared with independent measurements. The circulation around a triangle in the North Pacific approximately 1000 km on a side is computed, but no direct measurements are available for comparison.<<ETX>>","PeriodicalId":364128,"journal":{"name":"Proceedings of the IEEE Fourth Working Conference on Current Measurement","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1990-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122469645","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: 9
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