Key Technologies and Applications of Satellite and Sensor Web-coupled Real-time Dynamic Web Geographic Information System

• Main Authors: CHEN Nengcheng, XIAO Changjiang, LI Liangxiong
• Format: Article
• Language: zho
• Published: Surveying and Mapping Press 2017-10-01
• Series: Acta Geodaetica et Cartographica Sinica
• Subjects: satellite and sensor Web coupling; real time; dynamic; Web geographical information system (WebGIS); smart sensing; sharing and service
• Online Access: http://html.rhhz.net/CHXB/html/2017-10-1698.htm

The geo-spatial information service has failed to reflect the live status of spot and meet the needs of integrated monitoring and real-time information for a long time. To tackle the problems in observation sharing and integrated management of space-borne, air-borne, and ground-based platforms and efficient service of spatio-temporal information, an observation sharing model was proposed. The key technologies in real-time dynamic geographical information system (GIS) including maximum spatio-temporal coverage-based optimal layout of earth-observation sensor Web, task-driven and feedback-based control, real-time access of streaming observations, dynamic simulation, warning and decision support were detailed. An real-time dynamic Web geographical information system (WebGIS) named GeoSensor and its applications in sensing and management of spatio-temporal information of Yangtze River basin including navigation, flood prevention, and power generation were also introduced.