Forensic Locating Services

To find buried evidence, investigators in the past have had to rely
on hit and miss, time consuming excavation techniques, which can
be destructive as well as costly. Investigators around the world have
begun using Ground Penetrating Radar (GPR) to look for buried
objects. Virtual Underground has an experienced radar service team
ready to meet your locating needs.

Virtual Underground uses an advanced Ground Penetrating Radar
(GPR) array to find subsurface objects made from many common
materials. GPR sends a series of electromagnetic pulses into the
ground.  When they encounter a change in the soil (such as a
buried object) the waves are reflected back to the surface. These
are recorded by the instrument. From these reflections, the position
and depth of objects can be determined. By keeping careful track of
the measurements, a map is made of the site with the objects of
interested highlighted.

Most companies offering ground penetrating radar services only
have the capability to use single channel radar systems. These
devices excel at certain limited tasks, but most projects are better
suited to using a multi-channel radar system. The
TerraVision™ 3-D
ground penetrating radar array (developed by Geophysical Survey
Systems Inc.) is capable of efficiently collecting data over large
areas. By creating a large continuous map, the array can resolve
complex structures. The area can then be visualized in a manner
similar to medical ultrasound or MRI scanning. This technique is
ideal for mapping complex underground conditions. For smaller jobs
where the
TerraVision is unable to maneuver, we utilize the single-
channel
Utility Scan™ system.
  • Locate Human Remains

  • Find Buried Evidence

  • See Under Asphalt / Concrete
     Slabs

  • Find Tunnels

  • Examine Large areas Efficiently for
      Signs of Disturbed Soil

  • Find Excavated Sites - Even from
     the Distant Past
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