CIRCULAR STUDY ON THE REFINEMENT OF THE . SATELLITE BROADCAST CONCEPT Ap- by the Secmtary Qeneral and ptblIshed under his authority
RMW in tatc EngIM, FwncIr, RWn and Swish editions by the International Civil Aviation Organization. AII cumspondem, except ordem and subscripifom, should be ddd to the retmy Genemi. Onks for this publih ghculd bt sent to oat of the foIlowing add-, together with the appropriate moittmm by bank draft or mt office money order in U.S. dollars or the crrency of tke country in which the order is placed. Iocumcnt we8 Unit Inwmatbonal Civil Aviation Orgamhtion 1000 Skrbrooke Same Wcst, Suite 40Q MoatrM, Quebec C H3A 2R2 Idk. Oxford mmk md smhuy w., seiaaia How, Nw Ddbi or 17 Park Sut, Ukwtu, . Japan avll Adadon Prontotion Foution, 19-12, I -chome, Toranomon, MRIO-Ku. Tokyo. knp. fCAO RmrcUtive, Eutcrn d Southern African Office, United Nations ALxuwrmodacion, P.O. Box 46294, NJrobl. Mdm. taatt 6 a OACI, OMna MW, Ccatmmtrica y Cuibt, kpmacb postal 5-377, C.P. TlS90, MbriEo 5, D.F. RepPkcntant de 190ACi, Itcru Afriqw mxidmtdc a mtnlt, Bob pwtaIe 2356, Dakar. win. tiior's, Sumhhm AetuoqduW, S.A., C/Utb, Mfia PIb. 2,28043 Madrid. TkiId, ICAQ RqwcmratIw, Asia and Pacific Offtce, P.O. Box 614, mkok. United Kingdom. Chit Aviation Authority, Printin and PubHcatiom kviccs, GnviUe Haw, 37 httan Rood, Chtltenham, Oh,, GtSO 2BN. The Catalogue of lCAO Publications Issued annually, the Catalogue lists all publications currently available. Monthly supplements announce new publications, amendments, supplements, reprints, etc. Available free from the Document Sales Unit, ICAO
FOREWORD The Communications/Meteorology COM/MET Divisional Meeting held in Montreal in 1982 recommended that lCAO carry out an early study of the satellite broadcast concept and its implementation, upon which the world area fomst system configuration and telecommunicatians support function would be based. It would comprise a two world area forecast centres, each generating global area forecast system products b uplinks to an appropriate international satellite system and broadcast of area forecast system products and c national reception, processing and distribution of area forecast system products. The Air Navigation Commission ANC formed the Aeronautical Fixed Service Systems Planning for Data Interchange Panel ASPP, which held its first meeting in Montreal in 1986. The ASPP's terms of reference included development QF the world-wide plans for the evolutionary development of the aeronautical fixed service AFS to meet the operational requirements for data interchange of all AFS users including the world area forecast system WAFS. This document presents a study on the refinement of the satellite broadcast concept.
GLOSSARY OF TERMS ADF AFI AFP AFS AFTN ANC APIRG ARINC ASIA/PAC ASPP BER CAR/SAM C-BAND CCITT CIDIN COM/MET COMSAT DIFAX DIV Aviation digital forecast INTELSAT International Telecommunications Africa-Indian Ocean Satellite Organization Area Forecast Panel IOR Indian Ocean IN'TELSAT Aeronautical fixed service ITA International Telegraph Alphabet Aeronautical fixed telecommunication ITU International Telecommunications Union network Ku-BAND 14/12 GHz Air Navigation Commission MDD Meteorological data distribution AFI Planning and Implementation METAG Meteorological Advisory Group Regional Group METEOSAT Meteorological satellite Aeronautical Radio. Inc. MID Middle East Asia and Pacific MTN Main telecommunication network Aeronautical Fixed Service Systems NAM North American Planning for Data Interchange Panel NAT North Atlantic Bit error rate NMTN National meteorological Caribbean and South American telecommunication network 6/4 GHz NOTAM Notices to airmen international Consultative Committee for Telegraph and Telephone Common ICAO Data Interchange Network Communications/Meteorology Communications Satellite Corporation Digital facsimile Divisional OPMET PDN PTT RAFC RAN RMTN Operational meteorological Public data network Postal telephone and telegraph administrations Regional area forecast centre Regional air navigation Regional meteorological telecommunication network EANPG European Air Navigation Planning Group RPG Regional Planning Group EUMETSAT Organization for the Exploitation of Meteorological Satellites EUR European EUTELSAT European Telecommunication Satellite Organization FEC Forward error correction GMS Geostationary Meteorological Satellite GRACYAS Caribbean and South American Aeronautical Fixed Service Regional -.- - RPO A RTH SIGWX SITA ST0 UTC VSAT Recognized private operating agency Regional telecommunication hub Significant weather Societe Internationale de Telecommunications Aeronautiques Standard time of observation Universal co-ordinated time Very small aperture terminals - Planning Group WAFC World area forecast centre GTS Global Telecommunications System WAFS World area forecast system HF High frequency WMC World meteorological centres I A International Alphabet WMO World Meteorological Organization ICAO International Civil Aviation Organization www World Weather Watch INMARSAT International Maritime Satellite Organization ii
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