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Auflistung nach Autor:in "Stadler, Hermann"

1 - 7 von 7
  • Konferenzbeitrag
    Environmental Data-transmission Using Low Earth Orbit Satellites
    (Environmental Communication in the Information Society - Proceedings of the 16th Conference, 2002) Skritek, Paul; Lukasch, F.; Din, K.; Hodi, Th.; Stadler, Hermann
    Low Earth Orbit Satellites (LEOS) provide world-wide data-communication using lowcost and low-power equipment and allow to exploit also those regions, which up to now where inaccessible by cables, land-based wireless or geo-stationary (GEO) satellite systems. A detailed report of a hydro geological prototype implementation for remote waterquality monitoring using LEO satellites is presented. The paper describes the setup, obtained results, conclusions and future aspects as well as costs. As a result, LEO satellite data transmission has proved as a ubiquitous reliable low-cost alternative for environmental low-volume data-transmission, allowing “near on-line” worldwide monitoring even from most exposed and inaccessible measurement sites.
  • Konferenzbeitrag
    Near Real-Time Quality Assurance of Hydrological Measurements using Failsafe Data Transfer
    (Environmental Informatics and Industrial Environmental Protection: Concepts, Methods and Tools, 2009) Stadler, Hermann; Klock, Erich; Kollmitzer, Christian; Pindeus, Dietmar; Skritek, Paul
    Quality control (QC) of hydrological measurements also from remote measuring sites will be in the future a basic necessity in state of the art hydrological investigations. This will be of particular importance within quality assurance networks and early warning systems of drinking water supplies and all other tasks of sustainable water resource management. These systems heavily rely on on-line measurements and near real-time data transmission as well as automated plausibility tests in the run-up to the database in a Central Monitoring Station (CMS). To accept the great challenge of "real-time" verification of the quality of the measurements, which is very important for the supply of consumers with high quality uncontaminated drinking water, according to the European Water Framework Directive (European Parliament, 2000), we have established a bidirectional, dual wireless communication structure, combining GSM/GPRS data transfer with LEO-Satellite communication. In this way we obtain a failsafe data link from the spring in the remote area to the CMS. The data logger as the remote control unit manages the use of the two possible communication media. If available, the GSM/GPRS communication is used, otherwise the LEO-Satellite link is activated. This is necessary, because the small scale terrestrial communication structure of the cell-phone-networks are often impaired by local events like thunderstorms and floods. But especially during these times it is crucial to achieve information of the reaction of the spring. Therefore our system is a contribution to an integrated Quality Management Tool, which allows retracing the complete chain of generation of the measuring values.
  • Konferenzbeitrag
    Networking of Automated Event-Sampling Hydro-Meteorological Measuring Sites using LEO-Satellite Communication
    (Sh@ring – EnviroInfo 2004, 2004) Stadler, Hermann; Skritek, Paul
    A prototype event-triggered water quality monitoring and sampling network using Low Earth Orbit (LEO) Satellite data communication between all triggering and sampling units was developed. It is successfully applied for automated eventsampling in the scope of water quality protection of drinking water resources.
  • Konferenzbeitrag
    New Methods including Picture Processing for Hydro-Meteorological On-Line Data Acquisition
    (Environmental Informatics and Systems Research, 2007) Kollmitzer, Christian; Skritek, Paul; Woletz, Kurt; Stadler, Hermann
    Early warning systems, quality control networks and sustainable protection of drinking water resources became more and more important as a main task of water resources management. They heavily rely on on-line measurements, which mostly are automated. Nevertheless the quality of the measured data can be increased by an integrated Quality Management System, including also the field measurement devices into a complete chain of quality traceability. To increase the data reliability alternative measuring methods have to be evaluated. In our prototype development staff gauge images are digitally processed to achieve a second value for the actual water-level. If the both detected water levels are different, an alarm is generated or remote configuration procedures are performed. The system is a contribution to an integrated Quality Management Tool, allowing retracing the complete chain of measuring value acquisition. Low Earth Orbit Satellites then allow worldwide “nomadic” on-line data-communication from otherwise inaccessible regions. Their combination with plausibility tests in the run-up to the database enables us to accept the great challenge of "real-time" supervision of the quality of the measurements.
  • Konferenzbeitrag
    New Technologies for More Efficient Flood Management Systems
    (Managing Environmental Knowledge, 2006) Ruch, Christophe; Stadler, Hermann; Skritek, Paul
    Planning the emergency measures for flood management can often reduce disastrous consequences. In this paper, a new concept of coupled flood warning and modelling is presented. For data communication, Low Earth Orbit Satellite Systems will be included, as their infrastructure and services are not affected by local disasters as well as they provide data communication from any “dead spot” area. They also allow bidirectional communication, which is necessary for remote configuration of warning stations.
  • Konferenzbeitrag
    Online System for Hydro-Meteorological Data gathered via LEOSatellite Transmission
    (Informatics for Environmental Protection - Networking Environmental Information, 2005) Heiner, Werner; Stadler, Hermann; Skritek, aul
    Low Earth Orbit Satellites (LEOS) provide worldwide “nomadic” data-communication also for far-off regions, which are inaccessible by land-based wireless or geostationary (GEO) satellite systems. Since several years our working-group successfully applies LEOS data transmission to hydro-meteorological research, e.g., for eventtriggered water quality monitoring and sampling networks. To make these data instantaneously available to all coworkers and users worldwide, an online system for reception and decoding of the compressed data and its graphical visualization was developed. It contains a specific, fully automated email-client, an integrated data-base and a webinterface with dynamically created graphics and tables for the internet users.
  • Konferenzbeitrag
    The Challenge of Drinking-Water Quality Surveillance in Alpine Regions: Real-time data access.
    (EnviroInfo Dessau 2012, Part 1: Core Application Areas, 2012) Stadler, Hermann; Leis, Albrecht; Harum, Till; Woletz, Kurt; Farnleitner, Andreas H.
    Water resources from alpine and other mountainous karst aquifers play an important role for water supply in many European countries. As regulated in the WFD (Water Framework Directive), karstic catchments require sustainable protection. The increasing strains to such regions and the different utilization in the watersheds of karst springs are important triggers to establish early warning systems and quality assurance networks in water supplies. These systems rely heavily on in-situ measurements and online and near real-time availability of the data. With a satellite based network of measuring and sampling stations it was possible to carry out precipitation triggered event monitoring campaigns at different karst springs combining on-line measurements of hydrological parameters with fieldlaboratory based analyses of microbial faecal indicators.