Reference Work Entry

Encyclopedia of GIS

pp 204-209

Data Collection, Reliable Real-Time

  • Vana KalogerakiAffiliated withDept. of Computer Science and Engineering, University of CA
  • , Amir SoheiliAffiliated withESRI


Spatial queries; Reliable real-time data collection; Monitoring; Surveillance; Energy-aware; Energy optimization; Peer-tree (spatial index); Routing; SPIX; Spatial index

Figure 1

Example of Spatial Data Collection

Recent technological advances in wireless technologies and microelectronics have led to the emergence of wireless sensor networks, consisting of large numbers of small, low-power, inexpensive wireless sensor devices that are embedded in the physical world and are able to monitor it in a non‐intrusive manner. Wireless sensor networks have created tremendous opportunities for a wide variety of application settings. Large-scale wireless sensor network deployments have emerged in environmental and habitat monitoring, agriculture, health care, homeland security and disaster recovery missions. Different from general computer systems, wireless sensor devices are significantly constrained in terms of processing power, communication capability and energy. Furthermore, ...

This is an excerpt from the content