2004 - present. Director of ResearchSchool of Surveying and Spatial
Information Systems, UNSW.
1995 - 2004: Lecturer/ Senior Lecturer/ Senior Academic in Department
of Electronic Systems, University of Westminster, London, UK.
1988 - 1992: Employed by Auspace Limited, Canberra, Australia. System
Engineer and Project Manager on the development of a GPS receiver.
1985 - 1988: Engineer at STC, Sydney, Australia. Designing telecommunications
equipment for telephone exchanges.