User's Manual

GENERAL DESCRIPTION
IDS GeoRadar S.r.l. MNG/2017/009 Rev 1.1 12/ 54
4 GENERAL DESCRIPTION
The HYDRA system is designed to provide real time displacement
information with an accuracy of a tenth of a millimeter. The HYDRA system
is particularly suitable for a range of applications depending on the
configuration:
• Hydra G HP for Slope Monitoring: it is capable to detect and
measure both slow and fast movements in various different
environments, like for example Quarries, Open pit mines,
Landslides and Cut-slopes;
• Hydra G LP for Building Monitoring: with its all-in-one software
package, Surf Scan, it permits fast movement detection of a
Building, for example during the foundation consolidation process;
• Hydra U for Tunnel Monitoring: it aims to monitor rock fall
precursory event and provide warning in advance to evacuate
people and machinery at risk.
All the Hydra configurations operate at the same frequency.
The performance of the HYDRA system depends on the operative
measurement conditions (above all, related to the reflectivity of the area
under investigation); however, the best performance characteristics can be
defined as follows, depending on the configuration and type of antennas.
4.1 System Configurations
Hydra G HP with ANT 101:
▪ Maximum operational distance: 800 m;
▪ Image resolution in distance: 0.2 m;
▪ Angular resolution: 14 mrad;
▪ Accuracy in measuring displacements in the viewing direction: 0.1
mm;
▪ Radiation Cone (without considering the Pan-Tilt Movement): 16° H
× 13° V;
▪ Angular coverage (thanks to the Pan-Tilt Movement): 120°.
Hydra G HP with ANT 102:
▪ Maximum operational distance: 500 m;
▪ Image resolution in distance: 0.2 m;
▪ Angular resolution: 8 mrad;
▪ Accuracy in measuring displacements in the viewing direction: 0.1
mm;
▪ Radiation Cone (without considering the Pan-Tilt Movement): 26° H
× 25° V;
▪ Angular coverage (thanks to the Pan-Tilt Movement): 120°.
Hydra G LP:
▪ Maximum operational distance: 300 m;
▪ Image resolution in distance: 0.2 m;
▪ Angular resolution: 14 mrad;
▪ Accuracy in measuring displacements in the viewing direction: 0.1
mm;
▪ Radiation Cone (without considering the Pan-Tilt Movement): 16° H
× 13° V;