SEMINAR - II : Surveying& Mapping Chairperson Prof. C. Merry, University of Cape Town, South Africa Speakers A Progress Report on the AFREF Project Richard Wonnacott, Director of Survey Services, Chief Directorate: Surveys and Mapping, South Africa The South African Network of Continuously Operating GPS Base Stations Richard Wonnacott, Director of Survey Services, Chief Directorate: Surveys and Mapping South Africa TerraSAR-X : A High-Resolution Spaceborne Radar Sensor Supporting Surveying, Mapping & Infrastructure Development in Africa Nikolaus Faller, Chief Operating Officer Infoterra GmbH Germany Use of Modern Airborne Digital Sensors for Large Scale Mapping, Surveying and Infrastructure Development in Africa Kenneth Smillie, Sales Director-Airborne Sensors,Leica Geosystems AG Heerbrugg, Switzerland Digital Ortho-Images for South Africa Dr. Derek Clarke, Chief Director, Chief Directorate Surveys and Mapping, South Africa