DORIS SYSTEM
APPLICATIONS 		 

GEOTECHNICS

 

 
 
  Landslide (Boulc, France)

"The main advantage of the DORIS system is that it lets you monitor a phenomenon continuously and analyze movements. DORIS could be very useful for highlighting how rainfall can affect ground deformation, and for studying dynamic processes on site."
 
François Girault, geologist,
Bureau de Recherche Géologique et Minière.

 

  Control points for offshore engeneering

TOPNAV, the radiopositionning division of the Compagnie Générale de Géophysique group, used DORIS to calculate the height of a point on an drilling platform off the coast of Nogeria to within five centimeters. Engeneering teams used the coordinates to guide a structure weighing over 5000 tonnes into place. CLS also supplied mean sea level measurements to complement DORIS location data. Mean sea level was calculated in the same reference frame, using altimetry measurements acquired by the TOPEX-POSEIDON and ERS satellites. The engineers used this information to calculate an exact height for the new supporting structure. 		   
 
 
 
 
 
 

Photos credits :
    BRGM, CLS

 
CONTENTS
Copyright © 1999-2011 CLS. All rights reserved. Latest Update: 1999/12/02