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In recent years, earthquake, typhoon, snowflake and other natural disasters happened frequently and cause large number of casualties and economic losses. It needs to be further improved under the circumstances of sudden natural disasters. The solution to the problem is to provide data support for emergency response and scientific decision-making to commanders by uploading accurate, reliable and instant...
More and more new data acquisition methods are beginning to emerge for providing abundant spatial data. LiDAR as a fast, high accuracy data acquisition way is increasingly adopted in many information systems. It is crucial to get the field data in the first place for emergency management. The up to date, real-time, good quality data can better serve for the emergency response decision making. Diverse...
A new methodology of spatial index is studied under mobile geographic information system (GIS) environment based on smart phone. Key technologies are presented in the methodology, including R-tree structure, quad-tree structure, and mobile GIS. In order to deal with the problem between the limited processing speed and low memory of smart phone with the high speed inquire of mobile GIS, a new spatial...
This paper focuses on the design and development of Municipal Facilities Management System (MFMS). Street images and videos were collected by Wuhan LD2000-R Mobile Mapping System, and real-time videos on site under emergency conditions were captured by Wireless Transmission System. In MFMS, any street can be queried and located, visual information of facilities on the streets can be viewed, as well...
In view of the characteristics of mobile platform, Service-oriented Architecture (SOA) is investigated to integrate ocean forecast and visualization using Web Service and Geographic Information System (GIS). Taking the example of ocean forecast system of East China Sea, the system presented in this paper can seamlessly integrate multi-source and heterogeneous data into Regional Ocean Model System...
Because of low processing speed of CPU and small memory space, time efficiency of portable hardware, where Mobile GIS is running, is low when processing the mass data. A variety of plans, which can improve the time efficiency of rendering the mass data by application software at user side of Mobile GIS, were studied in terms of development language selection, rendering process control, memory mapping,...
This paper proposes an effective spatial information organization and management scheme oriented to mobile smart terminal. The scheme manages spatial data in local GIS server using vector data structure and combining full-relational database and spatial database engine (SDE), achieves spatial data synchronization and sharing between smart terminal and local server through wireless communication network...
Location-based services require a mobile device that is able to detect the user's current position in order to return the service required. Hence, this makes the area of location privacy a growing area of social concern. Navigation systems are one example of location-aware services that track users' location information over time in order to generate navigation instructions, thus making an individual's...
This paper proposes a new video file, which can integrate video information, audio information, as well as the spatial positioning information into a whole file. Given that the video frames have their corresponding spatial positioning information, we propose a set of methods to organize and manage locatable videos based on GIS technique, including splitting locatable video into geographic semantic...
Aiming at the present geological field data collection problems, the paper applies the mobile GIS technology to the process of traditional geological data acquisition and proposes a new collection process programs. The system which is integrated by the new process programs is developed on the VC.NET platform, using Windows Mobile technology and MapX Mobile software development kit. The system achieves...
Human scheduling for pipeline inspections of Coal Bed Methane field (CBM) is complicated due to more gas wells, field inspectors, and intensive pipeline equipments. To improve data collection efficiency, this work has developed a mobile GIS system which employed the state of art technologies including geographic information system, global positioning system, wireless networks and a smart phone. First,...
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