New Map Projections for Ireland
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چکیده
The Global Positioning System (GPS) enables precise positioning anywhere on earth with a precision of a few millimetres, if an appropriate reference frame and positioning infrastructure is in place. This framework and infrastructure in Ireland is known as IRENET95, and is a precise realisation of the European Terrestrial Reference System, ETRS89, resulting in European Terrestrial Reference Frame, ETRF89, co-ordinates.
منابع مشابه
ON THE CONTINUITY OF PROJECTIONS AND A GENERALIZED GRAM-SCHMIDT PROCESS
Let ? be an open connected subset of the complex plane C and let T be a bounded linear operator on a Hilbert space H. For ? in ? let e the orthogonal projection onto the null-space of T-?I . We discuss the necessary and sufficient conditions for the map ?? to b e continuous on ?. A generalized Gram- Schmidt process is also given.
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