Biograph: Professor Emeritus Gérard Lachapelle holds a Canada Research Chair/Informatics Circle of Research Excellence Chair in wireless location in the Department of Geomatics Engineering, the University of Calgary, Canada, where he has been professor since 1988 and Department Head from 1995 to 2003. From 1980 to 1988, he was Executive VP of Nortech (Surveys) Canada Inc. and Norstar Instruments where he directed GPS R&D programs, which resulted in the development of receiver technology that was subsequently taken over by NovAtel Inc in the late 80s. Since joining the University of Calgary, he and his PLAN (Position, Location And Navigation) Proup have developed numerous novel algorithms, software and patents related to Global Navigation Satellite Systems (GNSS) that have been licensed worldwide. Since holding a CRC/iCORE Chair in wireless location in 2001, this research also includes the development of new GNSS signal processing methods, indoor technologies and new applications. He holds degrees in geodesy and surveying engineering for Laval University, the University of Oxford, the University of Helsinki and the Technical University at Graz. Prior to 1980, he worked for five years as a geodetic engineer with the Geodetic Survey of Canada where he was involved in geodetic research and the Redefinition of the North American Datum, a joint project with the U.S. National Geodetic Survey. Professor Lachapelle has been active in numerous associations and was Western Vice President of the (U.S.) Institute of Navigation in 2002-03. He has received scores of awards for his work, including the Institute of Navigation Johannes Kepler Award in 1997 and fellowship of IEEE, the Royal Society of Canada, the Institute of Navigation, the Canadian Academy of Engineering and the Royal Institute of Navigation.

Title:GNSS Precise Point Positioning With Android Smartphones and Comparison with High Performance Receivers

Abstract: Precise Point Positioning (PPP) is becoming increasingly used instead of differential GNSS(DGNSS) due to its ease of use. With PPP, precise satellite orbits and clock corrections are calculated using the numerous International GNSS Service (IGS) permanent stations. The IGS network conceptually replaces the reference station(s) used in DGNSS. Models of the ionosphere and the troposphere are used to aid PPP, especially ionospheric models for single frequency users.  In addition to 3D position, PPP provides estimates of GNSS time and zenith tropospheric delays.