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G. Retscher:
"3-D Position Determination in a Multi-storey Building Using a Pedestrian Navigation System";
Talk: 3rd Symposium on Location Based Services and Telecartography, Vienna, Austria; 2005-11-28 - 2005-11-30; in: "Geowissenschaftliche Mitteilungen, Schriftenreihe der Studienrichtung Vermessungswesen und Geoinformation, TU Wien", G. Gartner (ed.); Band 74 (2005), ISSN: 1811-8380; 81 - 86.

Using pedestrian navigation and guidance services in indoor areas, a challenging task is to determine the correct floor of a user in a multi-storey building as most common indoor location techniques provide only 2-D position determination. In this case it can be recommended to augment the position determination system with a barometric pressure sensor for direct observation of height differences. In the research project NAVIO (Pedestrian Navigation Systems in Combined Indoor/Outdoor Environements) tests with different sensors have been performed and their results are presented in the paper. The tests show that it is possible to determine the correct floor of a user using a barometric pressure sensor as the standard deviation of the estimation of the height differences is better than  1 m.

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC05936061

Project Head Georg Gartner:
Fußgängernavigation in Gebäuden und im städtischen Umfeld