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Accomplishment of Topographic-Geodetic Research Works in Antarctica
Alexandr Yuskevich,
Federal Enterprise “Aerogeodesiya”, Saint-Peterburg, Russia
Abstracts
During the period of 1995-1999 through the efforts of specialists from the 17 countries in accordance with the GIANT program, there had been created a global geodetic GPS network of Antarctica (ITRF) which included 45 points (ellipsoid WGS-84). At present, specialists of the Russian Federation have started the development works on the territory of Antarctica with the aid of satellite means and methods of fundamental astronomic-geodetic network (FAGN) and high-precision geodetic network (H-PGN). In the accomplishment of satellite observations, the two-frequency aligned (combined) receivers GLONASS/GPS “Javad” (USA) are used. Observations of fragments FAGN and H-PGN are carried out using the network method of carrying out performances of simultaneous measurements on a great number of points. In addition to the points situated on the territory of Antarctica, the observations are also carried out on the points situated in Moscow, St. Petersburg, Irkutsk, Khabarovsk. Simultaneously with the satellite observations on points FAGN and H-PGN, gravimetric observations are carried out. While creating FAGN and H-PGN their connection with the existing global GPS network was ensured. A preliminary processing of the results of satellite measurements is accomplished using software: Pinnacle, GPSurvey, Trimble GPLoad. The catalogue of the coordinates of points FAGN and H-PGN is presented in the system ellipsoid WGS-84. The main aim of these research works is revealing tidal signals of GPS observations and determining exact coordinates, heights, speed of movement and deformation of glacier (ice) surface in the region under research.
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