Detecting underwater objects is an important application in marine applications. Most of the techniques are based on the amplitude related techniques, whereby the amplitude of the received echo is used to detect objects within specified bounds. Amplitude techniques however are prone to interference and attenuation, thus limiting the capabilities of such systems. Hence, the aim of this paper is to propose a new technique that detect and track underwater moving objects using the turbulence generated by the object. Wideband signals have proven to be a very efficient alternative for merging turbulent flow characteristics and waveform design in order to describe and explain the behavior of turbulence, both artificial and natural. Therefore, constructing adapted waveforms to the natural turbulence embedded in the flow, as well as to the artificial turbulence created by an unknown underwater moving object may hold the key for a new technique for underwater object tracking. When acoustic signals with a particular Instantaneous Frequency Law traveling into underwater environment will hit a moving object, their Instantaneous Frequency Law will capture the object's artificial turbulence, as well as the natural turbulence embedded in the flow. Experimental results carried out in our reduced scale facility provide the validation of the technique.
{"title":"Underwater object tracking using time frequency signatures of acoustic signals","authors":"Digulescu Angela, Candel Ion, Ioana Cornel, Bucur Diana, Petrut Teodor","doi":"10.1109/OCEANS-TAIPEI.2014.6964296","DOIUrl":"https://doi.org/10.1109/OCEANS-TAIPEI.2014.6964296","url":null,"abstract":"Detecting underwater objects is an important application in marine applications. Most of the techniques are based on the amplitude related techniques, whereby the amplitude of the received echo is used to detect objects within specified bounds. Amplitude techniques however are prone to interference and attenuation, thus limiting the capabilities of such systems. Hence, the aim of this paper is to propose a new technique that detect and track underwater moving objects using the turbulence generated by the object. Wideband signals have proven to be a very efficient alternative for merging turbulent flow characteristics and waveform design in order to describe and explain the behavior of turbulence, both artificial and natural. Therefore, constructing adapted waveforms to the natural turbulence embedded in the flow, as well as to the artificial turbulence created by an unknown underwater moving object may hold the key for a new technique for underwater object tracking. When acoustic signals with a particular Instantaneous Frequency Law traveling into underwater environment will hit a moving object, their Instantaneous Frequency Law will capture the object's artificial turbulence, as well as the natural turbulence embedded in the flow. Experimental results carried out in our reduced scale facility provide the validation of the technique.","PeriodicalId":114739,"journal":{"name":"OCEANS 2014 - TAIPEI","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133453739","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}
Pub Date : 2014-04-07DOI: 10.1109/OCEANS-TAIPEI.2014.6964513
Jie Chen, Huiping Xu, R. Qin
With the deepening exploration of the ocean, the building of seafloor observatory systems has become a hot topic. It is also a key way for furthering advancement in the area of the International Marine Science in the 21st century. China's first experimental seafloor observatory system named Xiaoqushan Seafloor Observatory has already been set up and put into operation since April 20th, 2009. Meanwhile, the state 863 program East China Sea Coastal Seafloor Observatory System and a research project concerning key technologies in seafloor observation are supposed to be completed in 2014. The East China Sea Seafloor Observatory System (ECSSOS) including the Xiaoqushan Seafloor Observatory and the coastal seafloor observatory system will be continually expanded in the near future. ECSSOS consists of multiple junction boxes and instruments performing full-time continuous monitoring. Thus how to store, transmit, analyze and share the large amount of received data will be an issue. To deal with this issue, the authors developed the WebGIS of ECSSOS. This paper aims to introduce the background, frame structure, function modules and technologies of this WebGIS, and make a detailed explanation of algorithms applied in real-time data querying module and historical data querying module.
{"title":"Implementation of the WebGIS of East China Sea seafloor observatory system","authors":"Jie Chen, Huiping Xu, R. Qin","doi":"10.1109/OCEANS-TAIPEI.2014.6964513","DOIUrl":"https://doi.org/10.1109/OCEANS-TAIPEI.2014.6964513","url":null,"abstract":"With the deepening exploration of the ocean, the building of seafloor observatory systems has become a hot topic. It is also a key way for furthering advancement in the area of the International Marine Science in the 21st century. China's first experimental seafloor observatory system named Xiaoqushan Seafloor Observatory has already been set up and put into operation since April 20th, 2009. Meanwhile, the state 863 program East China Sea Coastal Seafloor Observatory System and a research project concerning key technologies in seafloor observation are supposed to be completed in 2014. The East China Sea Seafloor Observatory System (ECSSOS) including the Xiaoqushan Seafloor Observatory and the coastal seafloor observatory system will be continually expanded in the near future. ECSSOS consists of multiple junction boxes and instruments performing full-time continuous monitoring. Thus how to store, transmit, analyze and share the large amount of received data will be an issue. To deal with this issue, the authors developed the WebGIS of ECSSOS. This paper aims to introduce the background, frame structure, function modules and technologies of this WebGIS, and make a detailed explanation of algorithms applied in real-time data querying module and historical data querying module.","PeriodicalId":114739,"journal":{"name":"OCEANS 2014 - TAIPEI","volume":"18 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131838749","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}
Pub Date : 2014-04-07DOI: 10.1109/OCEANS-TAIPEI.2014.6964376
D. Abraham
The peak envelope or intensity of a sonar signal is an important quantity in many applications (e.g., object detection, fish density estimation, and quantifying risk to marine mammals). However, modeling, prediction, and analysis is often limited to second-order statistics (e.g., sonar equation, transmission loss). Standard techniques from order-statistics are applied to approximate sonar signal peak statistics where both signal statistics and non-stationarity are captured through the use of heavy-tailed probability distributions. Analysis of real data from an echo-repeater sonar signal over six bandwidths and varying signal-to-noise ratio showed a good fit of the model for the expected peak to average intensity ratio. Predictions of spread overestimated the observed spread for small bandwidth-time (WT) products but improved in accuracy as WT increased.
{"title":"Modeling sonar signal peak to average intensity ratio","authors":"D. Abraham","doi":"10.1109/OCEANS-TAIPEI.2014.6964376","DOIUrl":"https://doi.org/10.1109/OCEANS-TAIPEI.2014.6964376","url":null,"abstract":"The peak envelope or intensity of a sonar signal is an important quantity in many applications (e.g., object detection, fish density estimation, and quantifying risk to marine mammals). However, modeling, prediction, and analysis is often limited to second-order statistics (e.g., sonar equation, transmission loss). Standard techniques from order-statistics are applied to approximate sonar signal peak statistics where both signal statistics and non-stationarity are captured through the use of heavy-tailed probability distributions. Analysis of real data from an echo-repeater sonar signal over six bandwidths and varying signal-to-noise ratio showed a good fit of the model for the expected peak to average intensity ratio. Predictions of spread overestimated the observed spread for small bandwidth-time (WT) products but improved in accuracy as WT increased.","PeriodicalId":114739,"journal":{"name":"OCEANS 2014 - TAIPEI","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134448400","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}
Pub Date : 2014-04-07DOI: 10.1109/OCEANS-TAIPEI.2014.6964520
Yang Shi, Kunde Yang, Yixin Yang, Yuanliang Ma
Evaporation duct forms over the ocean surface and have a strong impact on near-surface radar propagation. The statistical features of spatio-temporal distribution of evaporation duct are of great importance to the design and application of ship borne electromagnetic systems. High spatial resolution (0.312°×0.313°) climate database of evaporation duct was established based on up to date National Centers for Environmental Prediction (NCEP) Climate Forecast System Reanalysis (CFSR) data and the NPS evaporation duct model. The spatial resolution was about 39 times higher than the existed climate database (1.875°×1.875°). The statistical features and the physical mechanism of spatio-temporal distribution of evaporation duct for the South China Sea were analyzed in detail based on the database. The distribution features of the evaporation duct height for different sea areas and months were obtained. The relative results can be applied to ship borne radar and communication systems design and planning of operation.
{"title":"Spatio-temporal distribution of evaporation duct for the South China Sea","authors":"Yang Shi, Kunde Yang, Yixin Yang, Yuanliang Ma","doi":"10.1109/OCEANS-TAIPEI.2014.6964520","DOIUrl":"https://doi.org/10.1109/OCEANS-TAIPEI.2014.6964520","url":null,"abstract":"Evaporation duct forms over the ocean surface and have a strong impact on near-surface radar propagation. The statistical features of spatio-temporal distribution of evaporation duct are of great importance to the design and application of ship borne electromagnetic systems. High spatial resolution (0.312°×0.313°) climate database of evaporation duct was established based on up to date National Centers for Environmental Prediction (NCEP) Climate Forecast System Reanalysis (CFSR) data and the NPS evaporation duct model. The spatial resolution was about 39 times higher than the existed climate database (1.875°×1.875°). The statistical features and the physical mechanism of spatio-temporal distribution of evaporation duct for the South China Sea were analyzed in detail based on the database. The distribution features of the evaporation duct height for different sea areas and months were obtained. The relative results can be applied to ship borne radar and communication systems design and planning of operation.","PeriodicalId":114739,"journal":{"name":"OCEANS 2014 - TAIPEI","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114806688","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}
Pub Date : 2014-04-07DOI: 10.1109/OCEANS-TAIPEI.2014.6964523
S. Sirisup, S. Tomkratoke
In this study, we have applied normal mode analysis on recent past storm events in the Gulf of Tonkin and the Leyte Gulf. The normal modes for each location are obtained from the previously developed unstructured normal mode decomposition solver based on the finite element method. The analysis of the two recent past storm events using the normal modes derived from the solver has been investigated in these two locations. The first event is tropical cyclone NARI (2013) in the Gulf of Tonkin, Vietnam and the second one is the super typhoon HAIYAN (2013) in the Leyte Gulf, the Philippines. Apart from obtaining the site-specific storm hazard summary through the normal mode shape, the study also aims to gain a deeper understanding on how normal modes contributed to the overall surge from the analysis of these past storm events.
{"title":"Normal mode analysis on storm events in the Gulf of Tonkin and Leyte Gulf","authors":"S. Sirisup, S. Tomkratoke","doi":"10.1109/OCEANS-TAIPEI.2014.6964523","DOIUrl":"https://doi.org/10.1109/OCEANS-TAIPEI.2014.6964523","url":null,"abstract":"In this study, we have applied normal mode analysis on recent past storm events in the Gulf of Tonkin and the Leyte Gulf. The normal modes for each location are obtained from the previously developed unstructured normal mode decomposition solver based on the finite element method. The analysis of the two recent past storm events using the normal modes derived from the solver has been investigated in these two locations. The first event is tropical cyclone NARI (2013) in the Gulf of Tonkin, Vietnam and the second one is the super typhoon HAIYAN (2013) in the Leyte Gulf, the Philippines. Apart from obtaining the site-specific storm hazard summary through the normal mode shape, the study also aims to gain a deeper understanding on how normal modes contributed to the overall surge from the analysis of these past storm events.","PeriodicalId":114739,"journal":{"name":"OCEANS 2014 - TAIPEI","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115442141","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}
Pub Date : 2014-04-07DOI: 10.1109/OCEANS-TAIPEI.2014.6964394
L. Mu, C. Chen, Char‐Shine Liu, Chao-Ming Yu, Ya-Chao Yang, Jia-Pu Jang, Po-Chi Chen, Shao-Yong Liu, Tzu-Ting Chen, C. Paull
With the depletion of land resources, marine resources development and utilization become increasingly apparent. Accompanied by the development of marine resources from nearshore extension to the deep ocean, Unmanned Underwater Vehicles (UUVs) become key instruments. Generally, UUVs include autonomous and tethered types; each has its advantages and disadvantages. Through the use of combined vehicle systems, we could take advantages of both systems. With the recent advent of seafloor observatories, deep submergence science is poised to enter a new research era where scientists will gain a more detailed understanding of various seafloor features. In this study, the Autonomous Underwater Vehicle (AUV) path planning in west Good Weather Ridge (119 55', 22 15') with the multi-beam echo sounder to obtain underwater topography. In order to observation the environment, the Remotely Operated Vehicle (ROV) is hired to carry out the terrain image at 1350m water depth in detailed. This experience will help to build future underwater investigation capabilities.
{"title":"Underwater topography measurement and observation in Southwest Taiwan using unmanned underwater vehicles","authors":"L. Mu, C. Chen, Char‐Shine Liu, Chao-Ming Yu, Ya-Chao Yang, Jia-Pu Jang, Po-Chi Chen, Shao-Yong Liu, Tzu-Ting Chen, C. Paull","doi":"10.1109/OCEANS-TAIPEI.2014.6964394","DOIUrl":"https://doi.org/10.1109/OCEANS-TAIPEI.2014.6964394","url":null,"abstract":"With the depletion of land resources, marine resources development and utilization become increasingly apparent. Accompanied by the development of marine resources from nearshore extension to the deep ocean, Unmanned Underwater Vehicles (UUVs) become key instruments. Generally, UUVs include autonomous and tethered types; each has its advantages and disadvantages. Through the use of combined vehicle systems, we could take advantages of both systems. With the recent advent of seafloor observatories, deep submergence science is poised to enter a new research era where scientists will gain a more detailed understanding of various seafloor features. In this study, the Autonomous Underwater Vehicle (AUV) path planning in west Good Weather Ridge (119 55', 22 15') with the multi-beam echo sounder to obtain underwater topography. In order to observation the environment, the Remotely Operated Vehicle (ROV) is hired to carry out the terrain image at 1350m water depth in detailed. This experience will help to build future underwater investigation capabilities.","PeriodicalId":114739,"journal":{"name":"OCEANS 2014 - TAIPEI","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123532036","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}
Pub Date : 2014-04-07DOI: 10.1109/OCEANS-TAIPEI.2014.6964598
W. Lin, C. Chin, E. Mesbahi
Dynamic modeling and simulation of remotely-operated vehicle (ROV) are essential for search and rescue mission using AUV in remote distance. For initial model, hydrodynamic coefficients used in the ROV dynamic model are estimated using computation and analytical methods. The control strategy from launch to recovery is simulated using MATLABTM and SimulinkTM software. A three-dimension animation for ROV underwater operation is used to visualize the launch and recovery process of the AUV. The control simulation using a sliding mode controller (SMC) is designed to control the surge, sway, heave and yaw positions and velocities of the ROV under the sea wave and current disturbances. Simulated results show that the ROV is able to capture the AUV under the effect of current and wave disturbances.
{"title":"Remote robust control and simulation of robot for search and rescue mission in water","authors":"W. Lin, C. Chin, E. Mesbahi","doi":"10.1109/OCEANS-TAIPEI.2014.6964598","DOIUrl":"https://doi.org/10.1109/OCEANS-TAIPEI.2014.6964598","url":null,"abstract":"Dynamic modeling and simulation of remotely-operated vehicle (ROV) are essential for search and rescue mission using AUV in remote distance. For initial model, hydrodynamic coefficients used in the ROV dynamic model are estimated using computation and analytical methods. The control strategy from launch to recovery is simulated using MATLABTM and SimulinkTM software. A three-dimension animation for ROV underwater operation is used to visualize the launch and recovery process of the AUV. The control simulation using a sliding mode controller (SMC) is designed to control the surge, sway, heave and yaw positions and velocities of the ROV under the sea wave and current disturbances. Simulated results show that the ROV is able to capture the AUV under the effect of current and wave disturbances.","PeriodicalId":114739,"journal":{"name":"OCEANS 2014 - TAIPEI","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123700142","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}
Pub Date : 2014-04-07DOI: 10.1109/OCEANS-TAIPEI.2014.6964301
Yu Liu, Yong Wang
Studying low frequency sound transmission through water-air interface can help understand airplane-generated sound for acoustic remote sensing and effects of airborne sources on marine life. In this paper ray theory and wave theory are utilized to evaluate the acoustic transparency. Ray theory is first used to calculate the energy of the plane and spherical wave that transmits from water to air. Wave theory is then utilized to study spherical wave transmission through water-air interface. By comparing the results obtained from two theories, it is found that acoustic transparency can be derived using both ray and wave theory. Because acoustic transparency derived using ray theory is slightly smaller than that of the wave theory, it is thus called Enhanced Transparency as opposed to Anomalous Transparency proposed by Godin. By incorporating the inhomogeneous wave, wave theory does provide more significant transparency, especially in low frequencies. The results have been further extended to liquid-gas interface.
{"title":"Low-frequency sound transmission through water-air interface: A comparison between Ray and wave theory","authors":"Yu Liu, Yong Wang","doi":"10.1109/OCEANS-TAIPEI.2014.6964301","DOIUrl":"https://doi.org/10.1109/OCEANS-TAIPEI.2014.6964301","url":null,"abstract":"Studying low frequency sound transmission through water-air interface can help understand airplane-generated sound for acoustic remote sensing and effects of airborne sources on marine life. In this paper ray theory and wave theory are utilized to evaluate the acoustic transparency. Ray theory is first used to calculate the energy of the plane and spherical wave that transmits from water to air. Wave theory is then utilized to study spherical wave transmission through water-air interface. By comparing the results obtained from two theories, it is found that acoustic transparency can be derived using both ray and wave theory. Because acoustic transparency derived using ray theory is slightly smaller than that of the wave theory, it is thus called Enhanced Transparency as opposed to Anomalous Transparency proposed by Godin. By incorporating the inhomogeneous wave, wave theory does provide more significant transparency, especially in low frequencies. The results have been further extended to liquid-gas interface.","PeriodicalId":114739,"journal":{"name":"OCEANS 2014 - TAIPEI","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114966228","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}
Pub Date : 2014-04-07DOI: 10.1109/OCEANS-TAIPEI.2014.6964483
Arnau Carrera, N. Palomeras, D. Ribas, Petar Kormushev, M. Carreras
Intervention autonomous underwater vehicles (I-AUVs) are a promising platform to perform intervention task in underwater environments, replacing current methods like remotely operate underwater vehicles (ROVs) and manned sub-mersibles that are more expensive. This article proposes a complete system including all the necessary elements to perform a valve turning task using an I-AUV. The knowledge of an operator to perform the task is transmitted to an I-AUV by a learning by demonstration (LbD) algorithm. The algorithm learns the trajectory of the vehicle and the end-effector to accomplish the valve turning. The method has shown its feasibility in a controlled environment repeating the learned task with different valves and configurations.
{"title":"An Intervention-AUV learns how to perform an underwater valve turning","authors":"Arnau Carrera, N. Palomeras, D. Ribas, Petar Kormushev, M. Carreras","doi":"10.1109/OCEANS-TAIPEI.2014.6964483","DOIUrl":"https://doi.org/10.1109/OCEANS-TAIPEI.2014.6964483","url":null,"abstract":"Intervention autonomous underwater vehicles (I-AUVs) are a promising platform to perform intervention task in underwater environments, replacing current methods like remotely operate underwater vehicles (ROVs) and manned sub-mersibles that are more expensive. This article proposes a complete system including all the necessary elements to perform a valve turning task using an I-AUV. The knowledge of an operator to perform the task is transmitted to an I-AUV by a learning by demonstration (LbD) algorithm. The algorithm learns the trajectory of the vehicle and the end-effector to accomplish the valve turning. The method has shown its feasibility in a controlled environment repeating the learned task with different valves and configurations.","PeriodicalId":114739,"journal":{"name":"OCEANS 2014 - TAIPEI","volume":"312 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121071789","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}
Pub Date : 2014-04-07DOI: 10.1109/OCEANS-TAIPEI.2014.6964361
Mengnan Sun, Bing Zheng, Lifeng Zhao, Jia Yu
The combination of ROV and the seafloor-based sensors networks has become a mainstream medium to explore the world under water. As the task becomes more diversified, the data volume of the communication between the ROV and the sensor node grows increasingly. Although the light can not perform the long-distance propagation as the acoustic signal under water, with the high bandwidth speciality of optical communication, it is absolutely feasible to acquire a highspeed information interaction in short range. To achieve this goal, this paper aims to pay a way of an ROV equipped with a function of underwater laser communication system. In this paper, following the principle of ”bottom to top, analog to digital, low speed to high speed”, our novel ROV design with a laser communication system and its configuration was presented, and a simple analog communication link was built to test the feasibility, then the digital communication protocol RS-232 was applied to this link. Experiment results showed that in short rang, a highspeed and low-BER laser communication link under water was feasible.
{"title":"Paying a way of the ROV equipped with a function of underwater laser communication","authors":"Mengnan Sun, Bing Zheng, Lifeng Zhao, Jia Yu","doi":"10.1109/OCEANS-TAIPEI.2014.6964361","DOIUrl":"https://doi.org/10.1109/OCEANS-TAIPEI.2014.6964361","url":null,"abstract":"The combination of ROV and the seafloor-based sensors networks has become a mainstream medium to explore the world under water. As the task becomes more diversified, the data volume of the communication between the ROV and the sensor node grows increasingly. Although the light can not perform the long-distance propagation as the acoustic signal under water, with the high bandwidth speciality of optical communication, it is absolutely feasible to acquire a highspeed information interaction in short range. To achieve this goal, this paper aims to pay a way of an ROV equipped with a function of underwater laser communication system. In this paper, following the principle of ”bottom to top, analog to digital, low speed to high speed”, our novel ROV design with a laser communication system and its configuration was presented, and a simple analog communication link was built to test the feasibility, then the digital communication protocol RS-232 was applied to this link. Experiment results showed that in short rang, a highspeed and low-BER laser communication link under water was feasible.","PeriodicalId":114739,"journal":{"name":"OCEANS 2014 - TAIPEI","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126103140","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}
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