User's Manual

HOW TO INSTALL AN HYDRA-U SYSTEM
IDS GeoRadar S.r.l. MNG/2017/009 Rev 1.1 33/ 54
6 HOW TO INSTALL AN HYDRA-U SYSTEM
The installation of the HYDRA system requires about 15 minutes of work.
The procedure can be broken down into following parts:
1. preliminary operations;
2. installation of the tripod;
3. installation of the positioning unit on the tripod;
4. installation of the HYDRA Radar Sensor on the positioning unit;
5. installation of the Camera;
6. installation of the PSU;
The procedure for the dismantling of the equipment from the
measurement site is given in Par. 7.1, after the description of the 6
mentioned steps.
6.1 Preliminary operations
These are the preliminary operations suggested before the actual
installation of an HYDRA system:
- choose installation site;
- verify in advance that the contents of the transport cases were
properly loaded to avoid any damage during transportation.
- arrange a suitable means of transportation, capable of containing all
the needed material.
6.1.1 Choose the Installation Site
The first step in setting up an HYDRA is choosing an installation point. This
is a very important process which will greatly affect the quality of data. For
this reason it is advised that you work with IDS GeoRadar personnel to
choose the best installation point.
Below some considerations when choosing an installation site:
• Installation site should have a clear view of the area to be monitored.
Shadowed areas or other areas that cannot be seen will not be
present in the data;
• Installation site should be a place with enough room to permit free
movement of the PTU both in pan and tilt, avoiding collisions of the
Arc-SAR metallic arm with other obstacles;
• HYDRA should not be placed at a distance less than 2 m from the
area of interest for the monitoring, since targets nearer than 2 m will
not be visible;
• HYDRA should be placed far enough away from the wall so that it can
monitor the desired scenario. The system will monitor a cone shaped
area extending from the installation point. Refer to Par.4.1 and 5.2
for the maximum distance and beam width of the various
configurations;
• HYDRA measures the line of sight displacement. This means that it
measures the displacement that occurs along a line that extends
from the radar to the monitored surface. Movements which are
perpendicular to the radar’s line of sight can’t be seen. For this
reason avoid monitoring walls which are parallel to the radar’s line of
sight;
• Avoid area with vegetation (for slope monitoring) and glass surfaces
(for building monitoring);
• We can imagine two typical monitoring scenarios for HYDRA
scanning: side wall monitoring (Fig. 37) and roof monitoring (Fig. 38).