Mobile Geospatial Data Acquisition - Techniques, Application, Research UniBw München About 3000 Students (mostly living on campus, mostly soldiers, staff is civil, Trimester system!) 10 Faculties / Departments -- 13 programs The Faculties: * Civil Engineering, Geodesy and Geoinformatics (Univ) * Electro and Information Technology * Computer Science * Aeronautics and Aerospace Technologies * Education Sciences * Social Sciences * Economics * Business Management (FH) * Electrical Engineering * Mechanical Engineering AGIS -- GI lab Current research projects Overview * History * LBS -- location based services * Example: Project Paramount * Mobile data acquisition * Project "Advanced GeoServices" * Concept of mobile client * User scenario * Reasearch topics History: GIS & GPS integration (80´s-90´s) * Use of (curent) position in GIS applications * Navigation applications d- eg.: car navigation, "map matching" * Extension: Use of different sensors * Many applications * Example of our work: ALOIS Example ALOIS (1997 -- 2000) Overview * History * LBS -- location based services * Example: Project Paramount * Mobile data acquisition * Project "Advanced GeoServices" * Concept of mobile client * User scenario * Reasearch topics Location based services - LBS LBS -- Architecture (example) Example: Project PARAMOUNT Identify regions where service would be possible User involvement Architecture of PARAMOUNT Example Paramount Testarea (Bavarian Alps) In action (costs) In action Paramount - resumé Overview * History * LBS -- location based services * Example: Project Paramount * Mobile data acquisition * Project "Advanced GeoServices" * Concept of mobile client * User scenario * Reasearch topics " Advanced GeoServices" Main Tasks Focus in this talk Main tasks of this part Fields of application Concepts for mobile acquisition Generic mobile acquisition process Landslide application scenario Landslide application scenario Data model example Use case: Landslide alarm Use case: Landslide alarm Online geospatial data acquisition Online geospatial data acquisition Summary Geotech project Research questions raised Sensor Integration -- Sensor web Sensor networks - examples Relevant in our application: * GPS - positions, together with their timestamps * Total stations -- positions plus other geodetic measurements * Digital cameras - images showing changes of terrain appearance * Laser scanners -- terrain points for reconstructing digital elevation models (DEM) ,... * Extensometers -- gaps expansions of the ditches in which they are installed In general * Various types, image sensors and others Architecture Sensor user scenario Sensor Framework * Each geodetic sensor should be able to describe itself (i.e. behaviour, characteristics,...) in a common way and also publishes it's capabilities. Sensors are accessible via Web -- as suggested by the SensorWeb. * Wireless (e.g. Bluetooth, WLAN) and wired (e.g. serial cables) connections can be established for the purposes of communicating with the in-field sensor network. * Access to different sensor types via standard interfaces -- for the purposes of data retrieval and as well manipulation of these sensors. * Different data from different sensors can be processed on-the-fly and transformed into useful information. This is a very challenging task and requires highly sophisticated services. * Sensors data may be stored in databases using standard format (e.g. using O& M for encoding) * Alert / alarm should be generated if certain thresholds are reached or exceeded. Define rules for quality management * RDF - Ressource Description Framework (w3C standard) * Application in semantic web field * Allows for declarations in {Subject/Predicate/Object} form * Predicate is a oriented graph from subject to object RDF-XML example Ontology web language - OWL Thanks to AGIS staff Especially: * Florian Sayda * Roland Helmich * Admire Kandawasvika * Stephan Mäs * Fei Wang