Aimed at surveyors and GIS professionals, this video explains the difference between active and passive control methods in surveying, and the strengths and weaknesses of each. Passive control is the traditional method of referencing positions to physical benchmarks that have known locations. In contrast, active control references positions to one or more Continuously Operating Reference Stations (CORS). These stations use continuous contact with global navigation satellite systems (GNSS/GPS) to provide highly accurate and updated positions.

For more information on geospatial infrastructure, visit http://geodesy.noaa.gov/.

This Content Originally Published by a land surveyor to Land Surveyors United Network

Views: 41

See Your Saved Posts Timeline

Communicate ⇣

Comments Empower Your Profession!   Please Sign in or register to continue.

Follow Land Surveyors United

Where Thousands of Professional Land Surveyors, Students of Surveying and Educators are United through Collaborative Knowledge and Purpose.

Tools,Apps and Quick Guides

DEDICATED TO THE MEMORY OF SKIP FARROW (1953-2015)

Social Support For Equipment

© 2018   © Created by Land Surveyors United   Powered by

Badges  |  Contact LSU  |  Privacy Policy  |  Terms of Service