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Ground Penetrating Radar
Antennas
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Accurate answers require
high quality data, and the key to high
quality Ground Penetrating Radar (GPR) data
is the performance of the antennas. GSSI has
over 30 years experience in antenna design
and manufacture, and has developed a wide
range of antennas to meet the needs of a
broad range of applications. All antennas
are interchangeable with ANY SIR
System.
GSSI antennas are
durable and reliable and features include:
- Rugged, military-style connectors
- Coated, sealed electronics
- Shielding to eliminate above ground
interference
- Will operate in all temperature
conditions, -20°C to 50°C
- Low resistance, long-life
replaceable wear skids
- Rugged, high-density molded cases
- Heavy duty cable
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Model
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Center
Frequency
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Depth
of Penetration
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Typical
Applications
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Ground-Coupled Antennas |
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1500 MHz
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.5 m
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Concrete Evaluation
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900 MHz
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1 m
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Concrete Evaluation, Void
Detection
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400 MHz
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4 m
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Utility, Engineering,
Environmental, Void Detection
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270 MHz
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6 m
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Utility, Engineering,
Geotechnical
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200 MHz
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7 m
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Geotechnical, Engineering,
Environmental
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100 MHz
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20 m
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Geotechnical, Environmental,
Mining
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16 - 80 MHz
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25 - 35 m
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Geotechnical
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Air-Launched Antennas |
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2.2 GHz
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up to 0.75 m
depending on medium
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Pavement Thickness
and Road Condition Assessment |
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1000 MHz
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1 m
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Highway and Bridge
Deck Evaluations |
How They Work
The transmit antenna is
triggered by pulses from the SIR System and
radiates electromagnetic energy into the
subsurface of media. The energy reflects off
targets, or changes in the subsurface, and
is picked up at the surface by the receive
antenna.
February 2005
New -
GSSI Antenna Brochure (pdf)
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Model 5100 - 1.6 GHz
The Model 5100 is a very
high-resolution antenna used to inspect
concrete structures and roads.
- Unsurpassed data resolution for
concrete investigations
- Used to locate objects embedded in
concrete, such as rebar, tendons and
conduit
- Map thickness of concrete and
overlying cover
- Specially configured for access to
small areas
- Also used for other very
high-resolution, near surface
applications
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Model 5100 Antenna
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Model 3101D - 900 MHz
This high-resolution
antenna is designed for applications
requiring shallow penetration down to 1
meter (3 feet).
- Uses include void detection,
concrete thickness assessment and
shallow pipe location.
- Also for rebar identification on
projects where antenna size is not
critical or space is not limited.
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Model 3101D
Antenna
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Model 5103 - 400 MHz
The Model 5103 is
ideally suited for shallow (down to 3 m)
engineering and environmental applications.
- Locate buried utilities, drums and
underground storage tanks.
- Identify depth and location of
objects of all construction materials,
i.e., concrete pipes, plastic drums,
fiberglass tanks.
- Identify voids under man-made
structures such as roads, runways and
buildings.
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Model 5103
Antenna
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Model 5104 - 270 MHz
The Model 5104 is
ideally suited for deeper utility,
engineering and geotechnical applications.
- Locate buried utilities drums and
underground storage tanks.
- Identify depth and location of
objects of all construction materials,
i.e., concrete pipes, plastic drums and
fiberglass tanks.
- Locate utilities and other
man-emplaced targets to deeper depth.
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Model 5104
Antenna
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Model 5106 - 200 MHz
The Model 5106 can be
used for applications similar to the 5103,
but its lower frequency signal penetrates
deeper (down to 9 M) for geotechnical
applications.
- Locate utilities and other
man-emplaced targets to deeper depth.
- Identify geological features such as
bedrock, groundwater and boulder prior
to excavation.
- Map landfills, burial trenches and
filled-in waste lagoons on environmental
site assessment projects.
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Model 5106
Antenna
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Model 3207/3207A - 100
MHz
The Model 3207 is a
versatile antenna pair that can be operated
in three different configurations to
optimize performance.
- Utilize high-powered transmitters
for maximum penetration.
- Operate in bistatic or one of two
monostatic modes.
- Collect common depth point
measurements for velocity analysis.
- Antennas are shielded to eliminate
external interferences.
The Model 3207A provides
deep profiling in confined areas where
deployment is difficult.
- Monostatic applications are
accomplished by utilizing a transceiver
(both transmit and receive on one
electronic plug-in) in a single antenna
housing.
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Model 3207
Antenna
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Model 3200 MLF - 16 - 80
MHz
The Model 3200 MLF
multiple low-frequency antenna is designed
for the deepest possible penetration with
Subsurface Interface Radar.
- Antenna design consists of
interchangeable elements - by changing
the length of the antenna, you can
change the transmission frequency.
- Two sealed plastic housings contain
and protect both transmit and receive
electronics and batteries for fiber
optic trigger.
- Designed for ease of use in remote
locations, the Model 3200 MLF can be
deployed in discrete measurement
(stacking) or continuous profile data
collection modes.
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Model 3200 MLF
Antenna
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4105
Horn Antenna - 2.0 GHz
The high frequency of this 2.0 GH antenna
provides the highest resolution available in
the industry. It allows the clearest and
most precise measurement of pavement wearing
course thickness.
- Allows evaluation of
pavement binder course, base and
sub-base layers
- Air-launched antenna
allows fast, non-contact measurements at
highway speeds
- Lane closure not
necessary to acquire data
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Model 4105
Antenna
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4108 Horn Antenna - 1000
MHz
The Model 4108
air-launched (horn) antenna,
1 GHz, is a pavement thickness and road
condition assessment tool which can be used
at highway speeds greater than 45 mph (70
km/hr) with the SIRveyor SIR-20 system.
- Pavement thickness
- Road condition assessment
- Pavement inventory that can be used
at highway speeds
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Model 4108
Antenna
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