@unpublished{TUW-202717, author = {Wieser, Andreas}, title = {Geometriefreie Positionsbestimmung - Potential und Herausforderungen}, year = {2011}, keywords = {Positionierung, Fingerprinting}, note = {invited; talk: Geod{\"a}tisches Kolloquium der TU Darmstadt, Darmstadt; 2011-12-15 -- 2011-12-16} }