Surveying, Mapping and Geodesy The Comparison Between Postional Reliability of Globally Corrected GPS (C-NAV DGPS) and Terrastial Based One (Aquarius) in the Persian Gulf Arash Fouladi Study of Using SAR/InSAR For Land Subsidence Investigation in Bangkok Area Dr. Thongthit Chayakula Investigation on Different Commercial Carrier Phase-Based Global Wide Area Differential GPS Services Perfornance for Marine Applications in Persian Gulf Dr.Vali Arabi An Indoor Position System (IPS) Using Wireless LAN (WLAN) W. Muttitanon Iranian Permanent GPS Network (Strategy and Processing) Hamid Reza Nankali Developing a Truly Low-Cost Mapping Systems Using Handheld GPS and Camcorder Catur Aries R. New Airborne Lidar Sensor Systems Driven By 10 Years Experience Alexander Wiechert