The Groundvue 3 Ground Penetrating Radar (GPR) system manufactured by Usti Electronics is designed specifically as a near surface geophysics tool. The Groundvue 3 is perfectly suited to civil and structural engineering, environmental and archaeological applications.
The Groundvue 3 (GV3) can operate a wide choice of bistatic antenna from 6GHz, 4GHz, 1.5GHz, 1GHz, 400MHz and 250MHz central frequencies. The GV3 can be supplied as a single channel or 8 channel system; enabling the operator to optimise their data acquisition procedure by recording either; multiple transects or multiple antenna with a range of frequencies.
The GV3 system can be mounted onto a trolley for utility detection or engineering projects. Alternatively the system can be mounted to the underside of a vehicle for road inspection surveys.
The high pulse repetition frequency coupled with unique stacking functions permit the three different frequency datasets to be recorded simultaneously without cross talk. The record length for each channel is independently selectable permitting the operator to have complete control over data acquisition.
The system is completely modular and can be adapted to any GPR application.
The intuitive user interface and versatile display tools help an operator to quickly and easily analyse data in the field and implement quality control measures.
Unique to the Groundvue3:
Automatic Velocity Calibration (AVC)
The GV3 simultaneously triggers up to 8 channels, without cross channel interference. Using multiple receivers (with differing offsets) connected to a single transmitter, continuous comparative data is created. Through tracing coincident layers from each dataset it is possible to calculate transmission velocity for the full length of the data collected, the whole processes has been automated in ReflexW. The data can then be used to identify anomalous areas prior to data processing and interpretation. The method is proving particularly effective for accessing the number of cracks along road surfaces by inferring subsurface moisture distribution; the theory being cracks retain or allow more moisture to be present under the road course.
Crack Depth detection Head (CDH)
The crack depth detector head is an adapted bistatic antenna. The geometry of the 1.5GHz or 3GHz transducer pair is specifically designed to enhance responses from vertically orientated anomalies like cracks, whilst being relatively unresponsive to horizontal strata. As a result the antenna is typically deployed alongside a standard 1.5GHz bistatic antenna, or the 4GHz horn antenna, as part of a Groundvue3 multi-channel array. Through pairing the CDH with a standard antenna it is possible to clearly differentiate between features during data acquisition and mark them accordingly.
Groundvue data can be processed in a multitude of third party software packages including; RelfewW, GPR SLICE, GPRSoft or RoadDoctor.