Many
different radar systems are available, each having advantages and disadvantages.
For general surveying Sandberg favour the GSSI TerraSIRch SIR-3000 system.
This system has only, very recently, been made available to commercial
purchase
by
Geophysical
Survey Systems, Inc. (GSSI). Sandberg were one of the first to purchase
and commercially use the TerraSIRch SIR-3000 in the UK.
Using the TerraSIRch SIR-3000 system in conjunction with the latest
processing software to enables 3D models of
the investigation results to be constructed. The 3D format means a subsurface
object/target can be viewed (and reviewed) from different depths and
grid locations from the investigation site.
There are many advantages of the GSSI TerraSIRch SIR-3000 system over
slower, older GPR systems, these include:
The system is water resistant,
lightweight, small and easy to transport. This allows quick, effective
investigations in areas within a limited space
or amount of time.
The system has a single, dedicated data transfer channel.
This means faster data collection and reduced investigation time.
Internal sealed battery compartment using long life removable rechargeable
batteries.
The first to incorporate a full-colour transflective
display screen for clear, easy to read data images.
Data stored on internal hard drive or on removable Compact Flash
data memory allowing quick and easy data transfer to PC for analysis.
The
system has a multi-antennae function. This allows a multi-frequency
investigation to be undertaken with minimum of survey time disruption.
Battery
power lasts for the duration of the complete investigation. However,
for longer investigations the batteries can be replaced ‘hot’ to
continue for as long as required.
The possibility of GPS data integration
is available. This enables any subsurface target to be spatially
determined for future reference.