A great deal of ocean sensor observation data exists, for a wide range of marine disciplines, derived from in situ and remote observing platforms, in real-time, near-real-time and delayed mode. Ocean monitoring is rou...A great deal of ocean sensor observation data exists, for a wide range of marine disciplines, derived from in situ and remote observing platforms, in real-time, near-real-time and delayed mode. Ocean monitoring is routinely completed using sensors and instruments. Standardization is the key requirement for exchanging information about ocean sensors and sensor data and for comparing and combining information from different sensor networks. One or more sensors are often physically integrated into a single ocean ‘instrument' device, which often brings in many challenges related to diverse sensor data formats, parameters units, different spatiotemporal resolution, application domains, data quality and sensors protocols. To face these challenges requires the standardization efforts aiming at facilitating the so-called Sensor Web, which making it easy to provide public access to sensor data and metadata information. In this paper, a Marine Sensor Web, based on SOA and EDA and integrating the MBARI's PUCK protocol, IEEE 1451 and OGC SWE 2.0, is illustrated with a five-layer architecture. The Web Service layer and Event Process layer are illustrated in detail with an actual example. The demo study has demonstrated that a standard-based system can be built to access sensors and marine instruments distributed globally using common Web browsers for monitoring the environment and oceanic conditions besides marine sensor data on the Web, this framework of Marine Sensor Web can also play an important role in many other domains' information integration.展开更多
Current high-performance monitoring and early warning systems are compara-tively expensive and inflexible.The project described here aims for a systematic development of a prototypical alarm and early warning system f...Current high-performance monitoring and early warning systems are compara-tively expensive and inflexible.The project described here aims for a systematic development of a prototypical alarm and early warning system for landslides utilising low-cost ad hoc wireless sensor networks and flexible spatial web service technology.Using web-based services as tools to exchange environmental data is an important step towards addressing today’s larger scale environmental problems.The project’s information system functions for notification,data access and analysis are implemented utilising Open Geospatial Consortium web service specifications.Approaches to implementing the orchestration of operation workflows and production of near real-time information products are illustrated.展开更多
Real-time people localization cannot be achieved through statistical methods during crisis/emergency management events.An International Mobile Subscriber Identity(IMSI)catcher was proposed as a nontraditional method f...Real-time people localization cannot be achieved through statistical methods during crisis/emergency management events.An International Mobile Subscriber Identity(IMSI)catcher was proposed as a nontraditional method for cell phone-based people localization.We verified the idea of using a cell phone as a sensor and tested the possibility of transmitting cell phone data through the Open Geospatial Consortium(OGC)Sensor Web Enablement.Four large field tests were performed and are described in detail.The main conclusions for IMSI catcher deployment were search within a limited radius from its placement and the number of localized people was not a limiting aspect;although the technology for advanced cell phone-based localization is available for crisis/emergency management applications,we do not yet have sufficient ability to handle this technology.展开更多
基金supported by the open fund project ‘Research of Information Service of Marine Sensor Web’ (Grant No.2011002)the project ‘Research on Channel-Characteristics-Oriented Data Transmission Algorithm in USNs’ of NSF of China (Grant No.61202403)the projects ‘Research of Making Regulation of Testing Technology of Device Interface’ and ‘Development and Application of Real-Time and Long-Term Observation Network Under Nearshore and Adjacent Marine Areas’ of Public science and Technology Research Funds Projects of Ocean(Grant No.201305033-6,No.201105030)
文摘A great deal of ocean sensor observation data exists, for a wide range of marine disciplines, derived from in situ and remote observing platforms, in real-time, near-real-time and delayed mode. Ocean monitoring is routinely completed using sensors and instruments. Standardization is the key requirement for exchanging information about ocean sensors and sensor data and for comparing and combining information from different sensor networks. One or more sensors are often physically integrated into a single ocean ‘instrument' device, which often brings in many challenges related to diverse sensor data formats, parameters units, different spatiotemporal resolution, application domains, data quality and sensors protocols. To face these challenges requires the standardization efforts aiming at facilitating the so-called Sensor Web, which making it easy to provide public access to sensor data and metadata information. In this paper, a Marine Sensor Web, based on SOA and EDA and integrating the MBARI's PUCK protocol, IEEE 1451 and OGC SWE 2.0, is illustrated with a five-layer architecture. The Web Service layer and Event Process layer are illustrated in detail with an actual example. The demo study has demonstrated that a standard-based system can be built to access sensors and marine instruments distributed globally using common Web browsers for monitoring the environment and oceanic conditions besides marine sensor data on the Web, this framework of Marine Sensor Web can also play an important role in many other domains' information integration.
基金funded by the German Federal Ministry for Research and Education under Grant Number FKZ:03G0662A.
文摘Current high-performance monitoring and early warning systems are compara-tively expensive and inflexible.The project described here aims for a systematic development of a prototypical alarm and early warning system for landslides utilising low-cost ad hoc wireless sensor networks and flexible spatial web service technology.Using web-based services as tools to exchange environmental data is an important step towards addressing today’s larger scale environmental problems.The project’s information system functions for notification,data access and analysis are implemented utilising Open Geospatial Consortium web service specifications.Approaches to implementing the orchestration of operation workflows and production of near real-time information products are illustrated.
基金This research has been supported by funding from the EU FP7 Project No.217951,which is called‘Emergency Support System’and the project of Masaryk University under the grant agreement[No.MUNI/A/0902/2012]which is called‘Expression of Global Environmental Change in Component Earth’s Spheres’.
文摘Real-time people localization cannot be achieved through statistical methods during crisis/emergency management events.An International Mobile Subscriber Identity(IMSI)catcher was proposed as a nontraditional method for cell phone-based people localization.We verified the idea of using a cell phone as a sensor and tested the possibility of transmitting cell phone data through the Open Geospatial Consortium(OGC)Sensor Web Enablement.Four large field tests were performed and are described in detail.The main conclusions for IMSI catcher deployment were search within a limited radius from its placement and the number of localized people was not a limiting aspect;although the technology for advanced cell phone-based localization is available for crisis/emergency management applications,we do not yet have sufficient ability to handle this technology.
