OCEANS 2016 - Shanghai最新文献

Sparsity-based approach for ocean acoustic tomography using learned dictionaries 基于稀疏性的学习字典海洋声学层析方法

OCEANS 2016 - Shanghai Pub Date : 2016-06-09 DOI: 10.1109/OCEANSAP.2016.7485626

Tongchen Wang, Wen Xu

引用次数: 9

Characterization of measurement errors in a LBL positioning system LBL定位系统测量误差的表征

OCEANS 2016 - Shanghai Pub Date : 2016-06-09 DOI: 10.1109/OCEANSAP.2016.7485472

R. Almeida, J. Melo, N. Cruz

引用次数: 19

Evaluation of environmental data for search and rescue 为搜寻和救援提供环境资料的评估

OCEANS 2016 - Shanghai Pub Date : 2016-06-09 DOI: 10.1109/OCEANSAP.2016.7485535

H. Roarty, S. Glenn, A. Allen

{"title":"Evaluation of environmental data for search and rescue","authors":"H. Roarty, S. Glenn, A. Allen","doi":"10.1109/OCEANSAP.2016.7485535","DOIUrl":"https://doi.org/10.1109/OCEANSAP.2016.7485535","url":null,"abstract":"Ocean Environmental data is a key component utilized by the United States Coast Guard (USCG) when developing and executing a search and rescue mission. The Search and Rescue Optimal Planning System (SAROPS) became operational with the USCG in 2007 and is the main tool for developing search and rescue mission plans. This tool utilizes environmental data (wind, ocean currents, etc.) to estimate the drift of an object in the ocean and also calculate a probability of detection for the object based upon the various search sensors. The environmental data used by the Coast Guard is a combination of model output, in situ and remote sensing measurements. Recent work by the Coast Guard Office of Search and Rescue has shown that the various environmental data sources available in SAROPS have shown skill but none on a consistent basis. In the Mid Atlantic Bight we compared the predicted drift of several surface drifters that were advected with High Frequency radar measurements and regional and global ocean model surface currents. The results shown here indicate that an ensemble of surface current estimates is useful when trying to predict the path of an object drifting on the surface of the ocean.","PeriodicalId":382688,"journal":{"name":"OCEANS 2016 - Shanghai","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117276299","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: 11

Error tolerant dual-hydrophone localization in underwater sensor networks 水下传感器网络容错双水听器定位

OCEANS 2016 - Shanghai Pub Date : 2016-06-09 DOI: 10.1109/OCEANSAP.2016.7485717

Sanfeng Zhu, Naigao Jin, Lei Wang, S. Yang, Xueshu Zheng, Ming Zhu, Liang Sun

引用次数: 1

Active and passive underwater acoustic applications using an unmanned surface vehicle 主动和被动水声应用无人水面航行器

OCEANS 2016 - Shanghai Pub Date : 2016-04-10 DOI: 10.1109/OCEANSAP.2016.7485378

Jiu-cai Jin, Jie Zhang, Feng Shao, Zhichao Lv, Ming Li, Lan-jun Liu, Pengcheng Zhang

{"title":"Active and passive underwater acoustic applications using an unmanned surface vehicle","authors":"Jiu-cai Jin, Jie Zhang, Feng Shao, Zhichao Lv, Ming Li, Lan-jun Liu, Pengcheng Zhang","doi":"10.1109/OCEANSAP.2016.7485378","DOIUrl":"https://doi.org/10.1109/OCEANSAP.2016.7485378","url":null,"abstract":"Unmanned Surface Vehicle (USV) is a novel kind of oceanic platforms, which is potential to be an effective platform for acoustic applications. Active and passive underwater acoustic experiments using our USV called USBV at Ji-hong-tan reservoir in Qingdao on July 15-17, 2015 and at Wu-zhi-zhou Island in the South China Sea on January 3-6, 2016 are presented to quantify this potential. The acoustic sensors integrated in USBV contain an acoustic modem, a self-contained hydrophone and a single beam echo sounder with CORS GPS. In active acoustic experiment, fixed and mobile acoustic communications, bathymetry and acoustic remote are evaluated using USBV. The favorable signal strength of communication ensures that USBV integrated an acoustic modem can be used as acoustic nodes, gateways and even mobile relay. The bathymetric survey is applied successfully for USBV using CORS-GPS without tides observation. In passive acoustic experiment, USBV's radiated self-noise in different situations and above communication's signal are recorded, so the acoustic signature of USBV is acquired. The low level of USBV's radiated self-noise affirms that USBV is a reasonable platform for passive monitoring. The above experiment results indicate that the USV integrated acoustic modem, echo sounder and hydrophone can benefit to active and passive underwater acoustic research.","PeriodicalId":382688,"journal":{"name":"OCEANS 2016 - Shanghai","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115127646","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

Underwater acoustic communication based on virtual time reversal and sweep-spread carrier 基于虚拟时间反转和扫频载波的水声通信

OCEANS 2016 - Shanghai Pub Date : 2016-04-10 DOI: 10.1109/OCEANSAP.2016.7485563

Li Wen-cong, Yuan Fei, Chen Ke-yu, Zhu Yi

引用次数: 3

A realistic framework for collaborative control of multiple AUV system with primary experimental results 多AUV系统协同控制的现实框架及初步实验结果

OCEANS 2016 - Shanghai Pub Date : 2016-04-10 DOI: 10.1109/OCEANSAP.2016.7485584

Qingzhe Zhen, Dapeng Jiang

引用次数: 1

Fundamental study on ecosystem in East China Sea by an integrated model of low and high trophic levels 基于高、低营养水平综合模型的东海生态系统基础研究

OCEANS 2016 - Shanghai Pub Date : 2016-04-10 DOI: 10.1109/OCEANSAP.2016.7485409

Yiming Xia, S. Tabeta, F. Duan

{"title":"Fundamental study on ecosystem in East China Sea by an integrated model of low and high trophic levels","authors":"Yiming Xia, S. Tabeta, F. Duan","doi":"10.1109/OCEANSAP.2016.7485409","DOIUrl":"https://doi.org/10.1109/OCEANSAP.2016.7485409","url":null,"abstract":"As the main nutrient inputs of ECS, nutrient concentrations of the Yangtze River increase significantly due to high-speed economy development, which play a very important impact on the East China Sea ecosystem. In this study, by integrating MEC model and Ecosim model, we analyzed the impacts of Yangtze nutrient fluxes change and fishery on the ecosystem of ECS. The results show that in only consideration of nutrition influx changes of the Yangtze River, the biomass of high trophic level will increase varying from 5% to 10%, especially in which most of trophic level 3 creatures will raise about 10%. When only considering the fishery impact, yellow croaker and hairtail as the main fishery product of ECS were under drastic pressure and close to extinct and small fish and anchovy increase about 30% to 40% rapidly due to the decline of predators. Under comprehensive consideration of fishery and nutrition influx changes, the result shows the main fish production decrease significantly, average trophic level recession and small fish take the main position of ecosystem. The increase of nutrients input has a certain benefit for the ecosystem to slow the decline tendency of fish. The integrated model provides a prospect that we can study the entire ecosystem from the prospective of both environmental and fishery factors, extending from lower to higher trophic ecosystem, to achieve a top-down and bottom-up management.","PeriodicalId":382688,"journal":{"name":"OCEANS 2016 - Shanghai","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127455664","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

Hydrodynamic analysis of a SWATH planing USV based on CFD 基于CFD的SWATH平面无人潜航器水动力分析

OCEANS 2016 - Shanghai Pub Date : 2016-04-10 DOI: 10.1109/OCEANSAP.2016.7485460

Chao Wang, Yang Lin, Zhiqiang Hu, Lingbo Geng, Dong-dong Li

引用次数: 3

A semi-blind joint channel estimation and equalization single carrier coherent underwater acoustic communication receiver 一种半盲联合信道估计与均衡单载波相干水声通信接收机

OCEANS 2016 - Shanghai Pub Date : 2016-04-10 DOI: 10.1109/OCEANSAP.2016.7485388

Jing-jing Cai, W. Su, Shengquan Zhang, Keyu Chen, Deqing Wang

{"title":"A semi-blind joint channel estimation and equalization single carrier coherent underwater acoustic communication receiver","authors":"Jing-jing Cai, W. Su, Shengquan Zhang, Keyu Chen, Deqing Wang","doi":"10.1109/OCEANSAP.2016.7485388","DOIUrl":"https://doi.org/10.1109/OCEANSAP.2016.7485388","url":null,"abstract":"Based on Gibbs sampling technology, this paper puts forward a new semi-blind joint channel estimation and equalization algorithm that used in signal carrier coherent underwater acoustic communication system. First of all, we estimate the channel by using the train sequence with a loop structure before the data, and according to the sparse characteristics of underwater acoustic channel, this paper uses the sparse learning via iterative minimization (SLIM) algorithm which improves the accuracy of channel estimation under low SNR, and results in an accurate estimation with accurate SNR. Second, in dealing with the data frame, based on the time-varying characteristics of the underwater acoustic channel, the data frame is divided into specific length of overlapping pieces for processing. In overlapping blocks, based on the channel estimation results, we will get the maximum a posteriori (MAP) probability of the send data, at the same time; we will use the new information to update the channel at the same time, tracking the change of the channel. We analyzed the data getting in the ocean experiment of Xiamen sea area of 10 km, the results show that compared with traditional frequency domain linear equalization and time domain of decision feedback equalizer (DFE) algorithm, the algorithm is robust and the bit error rate is significantly reduced.","PeriodicalId":382688,"journal":{"name":"OCEANS 2016 - Shanghai","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124996775","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