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A Practical Guide For Underground Services Location and CCTV Drainage Surveys
GPS (Global Positioning System)
GPS is a satellite based positioning system owned and operated by the US DoD
( Department of Defence).
The Ordnance Survey active GPS network provides a network of GPS receivers on
known points that can be used for surveying with GPS.
RTK ( Real-Time-Kinematic) GPS enables the surveyor to survey service features
instantaneously, and subsequently relate the information to OS National Grid
: as sometimes required by utility companies.
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Designed By Peter Lee
Material Copyright 2001 - 05
Laser Surveys Ltd