Geodetic Control in Surveying: Active vs. Passive

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Geodetic Control in Surveying: Active vs. Passive

Survey Legend

Posted by ⚡Survenator⌁ on February 25, 2019 at 10:12am

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surveying, geodetic, tutorial, how-to, control

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/.

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