Abstract
2) ( 1 ) Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy ( 2 ) Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, U.K. The COST 271 Action («Effects of the Upper Atmosphere on Terrestrial and Earth-space Communications») within the European ionospheric community has the objectives, embodied in the Memorandum of Understanding (MoU): to study the influence of upper atmospheric conditions on terrestrial and Earth-space communications, to develop methods and techniques to improve ionospheric models over Europe for telecommunication and navigation applications and to transfer the results to the appropriate Radiocommunication Study Groups of the International Telecommunication Union (ITU-R) and other national and international organizations dealing with the modern communication systems. This introductory paper summarises briefly the background and historical context of COST 271 and outlines the main objectives, working methods and structure. It also lists the participating countries and institutions, the Management Committee (MC) Meetings, Workshops and Short-term Scientific Missions. In addition, the paper discusses the dissemination of the results and the collaboration among the participating institutions and researchers, before outlining the content of the Final Report.
Highlights
AND HISTORICAL CONTEXTTemporal and spatial changes in the upper atmosphere can act to limit and degrade the performance of terrestrial and Earth-space radio systems in many different ways
Three working packages were included in this area: Plasma effects on Global Navigation Satellite Systems (GNSS) applications – To explore the amplitude and dynamics of horizontal structures in Total Electron Content (TEC) by combining data derived by different measuring techniques, in particular under perturbed ionospheric conditions, to detect and analyse TID’s and the resultant phase fluctuations that degrade accuracy in GNSS applications under various geophysical conditions
The 17 COST member countries signatories of the COST 271 Memorandum of Understanding (MoU) are indicated in table II by names and addresses of their representatives
Summary
Temporal and spatial changes in the upper atmosphere can act to limit and degrade the performance of terrestrial and Earth-space radio systems in many different ways. COST projects are well suited to developing research co-operation in fields where finance is provided at the national level, because the resultant benefits to the sponsors of work are greater than accrue from the efforts of individual organisations The success of this approach has been demonstrated in the telecommunications domain in previous COST Actions concerned with the prediction of ionospheric propagation characteristics. The COST 238 Action PRIME (Prediction and Retrospective Ionospheric Modelling over Europe) was a four-year research project with objectives to develop regional maps and models of the European ionosphere that are more accurate than internationally available global maps and models (Bradley, 1995) It involved the participation of some 72 scientists and engineers from 31 organisations in 17 nations. The COST 271 Action was established with a remit to examine a range of relevant research areas within four broad groupings
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