Civil Engineering / COBRA PLUG-IN GPR KIT
REAL TIME SAMPLING
The Cobra Plug-In GPR uses Real Time Sampling of the radar signal. Today major manufacturers use conventional interleaved sequential sampling, giving only a down converted replica of the real signal.
The Real Time Sampling allows for 32,000 stacks/second resulting in an amazing 45 dB increased signal-to-noise ratio.
Note that only a 30 dB increased S/N-ratio roughly double the penetration ability of a typical conventional GPR-system.
A low voltage transmitter reduces power consumption and eliminates ringing. The use of power-hungry, high voltage transmitters is no longer needed; in such case transmitter power must be increased 32,000 times to be comparable!
REAL TIME SAMPLING ADVANTAGE
In February 2012 we made a comparison study between the COBRA PLUG-IN GPR, a Real Time Sampling GPR, and a conventional Sequential/ Interleaved Sampling GPR, the GSSI SIR-3000 GPR.
The performance study was made the same day, on an ice road passing Lule River and used the same SE-150 model antennas.
Wireless Bluetooth connection between GPR and control unit replaces interfering coax-cables and fragile fibre optic links. An Ultra Rugged Mesa PDA with embedded software is used for data collection. Data is stored in standard SEGY geophysical format.
The complete GPR-unit plugs into a single SUBECHO Antenna, any selectable model. No need for bistatic configuration.
The SUBECHO-antennas can all be used air- borne and in air-coupled operation and in any type of terrain. No need to cut trail paths any- more, not even in dense bush vegetation were ground coupled snake antennas have problems passing. Just lift the antenna above the bushes or in worst case use an octocopter UAV to carry the small and compact Cobra Plug-In.
Wireless operation, hand held data logger, low power consumption and an air coupled antenna add flexibility, ruggedness and durability and the most compact and deepest penetrating GPR-System available on the market.
APPLICATION & USES
The COBRA PLUG-IN GPR can be used to see the inside of very deep materials and structures up to 120 m depths.
GEOTECHNICAL SAFETY APPLICATIONS
SNOW & ICE RESEARCH
GROUNDWATER AND MINERAL PROSPECTING
Mapping of deep buried structures, pyramids, tunnels and chambers.
MILITARY & SECURITY
Locate deep clandestine tunnels/bunkers in militarized zones and around borderlines and prisons.
COBRA PLUG-IN GPR – TECHNICAL SPECIFICATIONS
COBRA PLUG-IN GPR UNIT
COBRA PLUG-IN CONTROL UNIT / CU
COBRA PLUG-IN ANTENNAS SUBECHO MODELS
BW (10 dB), Bandwidth (MHz)
Horizontal resolution @depth=λ
Size (L x W x H)
Air-coupled and ground-coupled operation:
Antenna Plug-in electronics:
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