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7th EC-GIS Workshop Potsdam, 14.06.2001

Optimization of field data management using mobile GIS, wireless technologies, distributed simulation-, and visualization systems. 7th EC-GIS Workshop Potsdam, 14.06.2001. Ingo Simonis (Institute for Geoinformatics, Münster). Agenda. Current situation of data acquisition

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7th EC-GIS Workshop Potsdam, 14.06.2001

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  1. Optimization of field data management using mobile GIS, wireless technologies, distributed simulation-, and visualization systems 7th EC-GIS Workshop Potsdam, 14.06.2001 Ingo Simonis (Institute for Geoinformatics, Münster)

  2. Agenda • Current situation of data acquisition • Mobile Communication • High Level Architecture – HLA • Momeno-Project • Outlook

  3. Field data acquisition Situation Data acquisition and processing are two distinct processes

  4. Current Situation Situation Data acquisition and processing are two distinct processes Time consuming Expensive

  5. Requirements Situation • What is needed? • User does the data acquisition in the • field

  6. Requirements Situation • What is needed? • User takes the data acquisition in the • field • User defines the required type of • processing

  7. Requirements Situation • What is needed? • User takes the data acquisition in the • field • User defines the required type of • processing • User sends the data to a remote • system

  8. Requirements Situation • What is needed? • User takes the data acquisition in the • field • User defines the required type of • processing • User sends the data to a remote • system • Processed data will be sent back to • the user

  9. Solution Situation How to achieve this goal? Distributed simulation and visualization capabilities Mobile Communication High Level Architecture

  10. Solution Distributed simulation and visualization capabilities Mobile Communication Mobile Communication High Level Architecture Situation

  11. Technologies Mobile Communication • Telecommunication • GSM • HSCSD • GPRS • (UMTS) • wireless LAN

  12. Technologies III Mobile Communication GSM: Global System for Mobile Communication • max 9.6 kbps HSCSD: High Speed Circuit Switched Data • based on a circuit-switched technology • new channel coding scheme • (14.4 kbit/sec) • allows up to four channels to be • combined: 57.6 kbit/sec • high network capacity demanded

  13. Technologies III Mobile Communication GPRS: General Packet Radio Service • no permanent link • data is encapsulated in individual • packets • “always on” • transfer capacities are shared between • users of one cell • theoretically 128 kbps UMTS: Universal Mobile Telecommunication Standard • up to 2mbps (practically <800kbps) • not before 2003

  14. wireless LAN max 40km Mobile Communication • uses radio frequency technology (2.4GHz) • Infrastructure: http Server AP

  15. wireless LAN Access Point Mobile Communication Line of Sight

  16. Transfer Rates Mobile Communication GSM GPRS HSCSD WLAN 9.6 < 30 < 40 > 10000 [kbps]

  17. Solution Distributed simulation and visualization capabilities High Level Architecture Situation Distributed simulation and visualization capabilities Mobile Communication High Level Architecture

  18. High Level Architecture HLA • defines a framework for distributed simulations

  19. High Level Architecture HLA • defines a framework for distributed simulations • Developed by the DMSO, under the US Department of Defense

  20. High Level Architecture HLA • defines a framework for distributed simulations • Developed by the DMSO, under the US Department of Defense • IEEE-Standard (1516.1/2) for interoperable simulation components

  21. High Level Architecture HLA • defines a framework for distributed simulations • Developed by the DMSO, under the US Department of Defense • IEEE-Standard (1516.1/2) for interoperable simulation components • Key feature: Separation of the communication and the state space

  22. Architecture F1 F2 F3 Fn Simulator Simulator Simulator Sensor Sensor Sensor Display Display LivePlayer . . . HLA • Distributed simulations consist of any • desired number of communicating and • synchronized simulators or other com- • ponents (=Federates) • Interrelated Federates forming a distributed • simulation (=Federation) • All communication is done via the Runtime • Infrastructure (=RTI) Simulator Runtime Infrastructure

  23. Interoperability Federate RTIAmbassador FedAmbassador RTI HLA • Interoperability is supported by: • Implementing well known interfacesto communicate with the RTI. Due to the restricted communication possibilities, the interoperability within a federation is guaranteed on a syntactical level. • Every object type to be published or accepted by a federate is documented in a well defined way (based on the Object Model Template). This helps to realize a more semantic interoperability.

  24. Project MOMENO • Mobile Measurement Network Optimization • Prototype • Data acquisition, sending and receiving • HLA: Distributed data interpolation and visualization

  25. Architecture MOMENO

  26. WindowsCE Client MOMENO

  27. To make the remote simulation plug & playable… RootFederate OGCSpecs GeoFederate Outlook We have to achieve a high level of interoperability in the sense of OGC: • To create an OMT compliant Geo Object Model,describing basic OGC Features (Simple Features, Coverage) • Geo Federates

  28. Thank you for your attention

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