"The main objectives of the project COST251 in continuation of the project COST238, embodied in the agreed Memorandum of Understanding, are: 1. To demonstrate the practical improvement to terrestrial and Earth-space radio systems of COST238 derived ionospheric models and to promote their use. 2. To further refine these models and to widen their geographical area of applicability between latitudes of 35-70N and longitudes of 10W-60E. 3. To collect additional quantities and types of ionospheric information and to extend the models to give system performance statistics."@en . "Improved quality of service in ionospheric telecommunication systems planning and quality"@en . . . "http://www.isvav.cz/projectDetail.do?rowId=OC 251.10"^^ . " predictions" . "0"^^ . . " radio communication" . . . "14"^^ . . . "14"^^ . " radio wave propagation" . . . . . "Zlep\u0161en\u00E1 kvalita slu\u017Eeb v pl\u00E1nov\u00E1n\u00ED a provozu ionosf\u00E9rick\u00FDch telekomunika\u010Dn\u00EDch syst\u00E9m\u016F" . "ionosphere, radio communication, predictions, radio wave propagation, ionosphere-atmosphere coupling"@en . "Z\u00E1v\u011Bre\u010Dn\u00E1 zpr\u00E1va"@cs . . "OC 251.10" . . . "1"^^ . "Zlep\u0161en\u00E1 kvalita slu\u017Eeb v pl\u00E1nov\u00E1n\u00ED a provozu ionosf\u00E9rick\u00FDch telekomunika\u010Dn\u00EDch syst\u00E9m\u016F" . . "ionosphere" . "0"^^ .