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report of the action team on global navigation satellite systems (gnss)

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Services334. The Portuguese Geographical Institute, resp<strong>on</strong>sible for geodesy and mapping, has beenusing GPS in different applicati<strong>on</strong>s. The establishment and maintenance <str<strong>on</strong>g>of</str<strong>on</strong>g> a permanent GPSnetwork for EUREF as well as <str<strong>on</strong>g>the</str<strong>on</strong>g> disseminati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>the</str<strong>on</strong>g> data also falls under its resp<strong>on</strong>sibility(http://www.igeo.pt).335. Similarly, <str<strong>on</strong>g>the</str<strong>on</strong>g> Military Geographical Institute (http://www.igeoe.pt) and <str<strong>on</strong>g>the</str<strong>on</strong>g>Hydrographical Institute (http://www.hidrografico.pt) have current applicati<strong>on</strong>s with GPS.O<str<strong>on</strong>g>the</str<strong>on</strong>g>r activities336. In Portugal, GPS is widely used in different fields, both by public instituti<strong>on</strong>s as well asby private firms. In areas such as <str<strong>on</strong>g>the</str<strong>on</strong>g> envir<strong>on</strong>ment, forestry, Earth resources, mapping, navigati<strong>on</strong>,fleet management and c<strong>on</strong>trol, and dam m<strong>on</strong>itoring, GPS is a technique <str<strong>on</strong>g>of</str<strong>on</strong>g> fundamentalimportance, giving rise to a c<strong>on</strong>siderable market <str<strong>on</strong>g>of</str<strong>on</strong>g> GPS equipment. All <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>the</str<strong>on</strong>g> main trademarksare represented in <str<strong>on</strong>g>the</str<strong>on</strong>g> country.337. Since Portugal is a member <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>the</str<strong>on</strong>g> EU and ESA, particular attenti<strong>on</strong> is being given to all<str<strong>on</strong>g>the</str<strong>on</strong>g> development phases <str<strong>on</strong>g>of</str<strong>on</strong>g> GALILEO.2. Latin America and <str<strong>on</strong>g>the</str<strong>on</strong>g> Caribbean338. In <str<strong>on</strong>g>the</str<strong>on</strong>g> late 1970s, activities related to GNSS started in Argentina. Most <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>the</str<strong>on</strong>g>se activitieshave been developed at La Plata Nati<strong>on</strong>al University (Universidad Naci<strong>on</strong>al de La Plata), in itsFaculty <str<strong>on</strong>g>of</str<strong>on</strong>g> Astr<strong>on</strong>omical and Geophysical Sciences (FCAGLP).339. The c<strong>on</strong>tributi<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>the</str<strong>on</strong>g> astr<strong>on</strong>omers and geodesists <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>the</str<strong>on</strong>g> FCAGLP covers severalaspects <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>the</str<strong>on</strong>g> GNSS work: scientific research, training, development and transfer <str<strong>on</strong>g>of</str<strong>on</strong>g> “know-how”and practical applicati<strong>on</strong>s.340. This secti<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>the</str<strong>on</strong>g> <str<strong>on</strong>g>report</str<strong>on</strong>g> summarizes <str<strong>on</strong>g>the</str<strong>on</strong>g> c<strong>on</strong>tributi<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> two groups at <str<strong>on</strong>g>the</str<strong>on</strong>g> FCAGLP toGPS work:1. Satellite Geodesy Group (SGG): particularly oriented towards <str<strong>on</strong>g>the</str<strong>on</strong>g> practicalapplicati<strong>on</strong>s <str<strong>on</strong>g>of</str<strong>on</strong>g> GPS; and2. Georeferenciación Satelital (GESA) or Satellite referencing <strong>on</strong> <str<strong>on</strong>g>the</str<strong>on</strong>g> Earth: whichdevelops research work <strong>on</strong> GPS, organizes lectures, courses and seminars, being veryfamiliar with educati<strong>on</strong> at <str<strong>on</strong>g>the</str<strong>on</strong>g> university level (pre- and post-degree levels).Augmentati<strong>on</strong> Systems341. In Brazil, SBAS (Space Based Augmentati<strong>on</strong> System)’s testbed was underway. Thetopics related to <str<strong>on</strong>g>the</str<strong>on</strong>g> subject are i<strong>on</strong>osphere and scintillati<strong>on</strong> modelling. There is also a project fora geostati<strong>on</strong>ary <strong>satellite</strong>.342. In additi<strong>on</strong>, <str<strong>on</strong>g>the</str<strong>on</strong>g>re was <str<strong>on</strong>g>the</str<strong>on</strong>g> GBAS (Ground Based Augmentati<strong>on</strong> System): development <str<strong>on</strong>g>of</str<strong>on</strong>g>DGNSS network and development <str<strong>on</strong>g>of</str<strong>on</strong>g> pseudolite.60

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