georadar geoscope mk iv 3d step frequency · pdf filegeoscope tm mk iv 3d step-frequency gpr...

CODEVINTECTecnologie per le Scienze della Terra

Georadar GeoScope™ Mk IV 3D Step Frequency GPR

High-speed 3D GP achieves both high-resolution & deep penetration

Applications areas

> Road & Bridge InspectionWide swath width and high-speed data capture minimizes lane closures.

> Railroad InspectionProgrammable to utilize unique scan patterns enabling a “look under” rails capability.

> ArchaeologyIncreased depths, multi-channel antenna array support and high-resolution reduce data collection time while providing the best possible imagery.

> Utility MappingDeeper depths and clear imagery increase the probability of locating buried infrastructure.

> Mine/IED DetectionThe Mk IV technology is ideal for C-IED applications. High-resolution and increased depth penetration, combined with an open software interface, makes GeoScope Mk IV a key component in IED/UXO detection systems.

DXG Antenna Array Series

DX Antenna Array Series

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Features & benefits

> Achieving optimal resolution at all depths Step-frequency technology enables users to achieve the best possible resolution at each investigation depth. Penetration and the highest resolution are simultaneously achieved with only ONE single antenna array. No need to employ different frequency antennas to adapt to different depths.

> Unprecedented area survey speed (work rate) Very high scan rates and an efficient sampling method enables GeoScope Mk IV to provide full resolution 3D imagery with a 2.4 m antenna array at more than 80 km/h with a sampling grid of 7.5 by 7.5 cm. Work rates of above 20 ha/h are pos-sible in appropriate locations.

> High-resolution, full 3D subsurface imagery 7.5 cm channel spacing in the antenna array combined with 3 GHz bandwidth ensures high-density sampling as required by utility mapping, military applications and archaeology prospecting.

> Wide range of antenna arrays with uniformy response across the elements The Mk IV is compatible with all DX and DXG Series antenna arrays ranging up to 3.3 m in width.

GeoScope TM Mk IV3D Step-Frequency GPR

GeoScope Mk IV ground penetrating radar (GPR) raises the standard for high-speed, high density three-dimensional, subsurface imaging. The Mk IV is the fourth generation GeoScope and further exploits the application of step-frequency technology to GPR. GeoScope Mk IV enables high-density, high-speed 3D data capture with the unique combination of deep subsurface penetration coupled to high-resolution. Optimal signal bandwidth and the best possible resolution at each investigation depth result in large swaths of the subsurface surveyed at higher speeds with no sacrifice in imaging detail.

Technical specifications GeoScope™ Mk IVAntennas Compatible with all 3D-RADAR DX and DXG

antenna array models

Number of Channels User selectable up to the number of channelsin the antenna array (Currently 41)

Scan Pattern User definable. Includes linear scan, multi-offsetand common mid-point.

Frequency Bandwidth 2.9 GHz (100-3000 MHz)

Resolution (Time) 0.34 ns.

Time Range User selectable, up to 250 ns.

Scan Rate User selectable, up to 13,000 A-scans per second

Operating Mode Continuous (Time Interval), Survey Wheel(Distance Interval) or External Trigger

Positioning Internal GPS in antenna array (Coarse) or externalGPS with NMEA 0183 protocol

User Interface Control and display GUI running on externalcomputer. Full 3D real-time data display

Interfaces Gigabit Ethernet (Client computer),RS-232C (GPS) and Digital I/O (DMI, Trigger In and Out)

Power Supply 10.5-36 VDC, 100 Watts

Size Without transport container:483 x 337 x 89 mm (2U 19” rackmount) Within transport container:630 x 500 x 310 mm

Weight Without transport container: 8 kgWithin transport container: 20.5 kg

Temperature Range Operating: 0 to 50°CStorage: -40 to +85°C

Client Computer Intel i5 or i7 with 8GBytes RAM. Touch screen recommended. Fast and large SSD recommended to store radar data

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Features & benefits

> Superior resolution at shallow depths - ideal for near surface GPR data acquisition.

> Wideband Coverage (200MHz to 3GHz) enables detailed surveys from near surface to deeper depths in a single pass with less than 2.5 cm resolution at shallow depths.

> Capture wide swaths of survey data in one pass

> Support for multi-offset data recording

> Built-in GPS receiver for coarse positioning and precise time reference standard.

> Delivered and stored in rugged shipping container for safe storage and transportation.

Applications areas

> Road Pavement

> Aircraft Runway

> Bridge Deck

> Railroad Ballast

> Military-improvised explosive device (IED)/

> unexploded ordnance (UXO)

> Archaeology

Air-Coupled Antenna Arrays3D Step-Frequency GPRDX Antenna Array Series

DX Antenna Arrays Series represents the latest innovation in three-dimensional ground penetrating radar (GPR) data collection. The air-coupled antenna array is suitable for applications where the antenna needs to be elevated off of the surface for fast road and railroad inspection, and landmine/improvised explosive device (IED) detection.

Antenna arrays allow scanning of up to 41 channels over a continuous 200MHz to 3GHz frequency range. The antenna arrays collect three-dimensional GPR data with dense line spacing. DX Antenna Arrays Series provides high resolution at shallow depths and deeper penetration compared to traditional air-coupled pulse-based GPR systems.

The unique wideband antenna design consists of bow-tie monopole antennas whereby the combination of the different transmitter/receiver antenna elements allow the user to collect three-dimensional data along multiple survey lines with a channel spacing of 7.5 cm. The antenna is equipped with a standard 5/8” thread mount for easy mounting of a global positioning system (GPS) antenna or TotalStation prism.

Antenna Configuration

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Technical specifications

Model DX1821 DX2125 DX2429 DX3341 Number Of Channels 21 25 29 41

Width 1.8 m 2.1 m 2.4 m 3.3 m

Frequency Range 200-3000 MHz 200-3000 MHz 200-3000 MHz 200-3000 MHz

Channel Spacing 75 mm 75 mm 75 mm 75 mm(Cross-Line)

Effective Scan 1.575 m 1.875 m 2.175 m 3.075 mWidth

Direct Wave > 50 dB > 50 dB > 50 dB > 50 dBSuppression

Polarization Linear Linear Linear Linear (in-line direction) (in-line direction) (in-line direction) (in-line direction)

Size (meters) 1.815 x 0.58 x 2.115 x 0.58 x 2.415 x 0.58 x 3.4 x 0.58 x 0.21 0.21 0.21 0.21

Weight 28 kg 33 kg 38 kg 50 kg

Transport Container 1.9 x 0.645 x 2.2 x 0.645 x 2.5 x 0.645 x 3.49 x 0.65 x Size (meters) 0.27 0.27 0.27 0.275

Transport Container 27 kg 30 kg 33 kg 55 kgWeight

Accessories

> Trailer mounting kit (not recommended for speeds higher than 30 km/h)

> Antenna cables (up to 10 m length)

> DMI/Odometer with wheel adapter


Note: Other sizes are available on a custom order basis Contact Codevintec for additional details: [email protected].

Displacement of elements and channels of the standard scan pattern for DX2429. Other antennas have identical spacing, but different numbers of channels that are strictly dependent on antenna width.

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Features & benefits

> Unique combination of high-resolution near- surface imaging and deep penetration penetration capabilitie.

> Locates structures and utilities at deeper depths without sacrificing resolution.

> Three standard models offer a variety of widths and coverage options.

> Captures wide swaths of survey data in one

pass.

> Quickly track pipes, utilities, rebar and other structures.

> Wider arrays ideally suited for large scale utility

mapping and fieldwork. Narrower arrays enable

survey in narrow corridors and small areas.

> Simultaneous data recording from two receiver with no loss of fidelity.

> Lane closures shortened, safer working environment and less time spent in the field.

> Support for multi-offset data recording.

> Built-in GPS receiver for coarse positioning and standard.

> Delivered and stored in rugged shipping container for safe storage and transportation.

Ground-coupled AntennaArrays for 3D step-frequency GPRDXG Antenna Array Series

DXG Antenna Array Series is the ultimate tool for mapping and detection of shallow and deep subsurface objects.Its three-dimensional, high-accuracy, high-resolution and high-definition subsurface data is quickly collected and analyzed.DXG is the most wideband antenna array on the market with a frequency range between 200 MHz - 3 GHz, maximizing the resolution at each depth level.The unique wideband antenna design consists of bow-tie monopole antennas. The combination of different transmitter/receiver antenna elements allow the user to collect high density three-dimensional data along multiple parallel survey lines, with a channel spacing of 7.5 cm. The antenna is equipped with a standard 5/8” thread mount for easy mounting of a global positioning system (GPS) antenna or TotalStation prism.

Applications areas

> Road Pavement

> Aircraft Runway

> Bridge Deck

> Railroad Ballast

> Utility Mapping

> Archaeology

DXG collected bridge deck data displayed in Examiner™. Note both the interface layers between the asphalt overlay, concrete are clearly visible, along with individual rebars.

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Technical specifications

DXG0908 DXG1212 DXG1820Number Of Channels 8 12 20

Width 0.9 m 1.2 m 1.8 m

Frequency Range 8 12 20

Channel Spacing 75 mm 75 mm 75 mm(Cross-Line)

Effective Scan Width 0.6 m 0.9 m 1.5 m

Direct Wave Suppression > 50 dB > 50 dB > 50 dB

Polarization Linear Linear Linear (in-line direction) (in-line direction) (in-line direction)

Size (L x W x H m) 10.945x0.795x0.14 10.245x0.795x0.14 10.895x0.92x0.205

Weight 19 kg 25 kg 38 kg

Transport Container Size 1.0 x0.92x0.205 1.295x0.92x0.205 1.895x0.92x0.205

Transport Container Weight 20 kg 22 kg 32 kg

Accessories

> Two-wheel, light-weight for speeds trailer

> Antenna cables (up to 10 m length)

> DMI/Odometer with wheel adapter

The combination of GeoScope™ Mk IV 3D GPR-radar unit and DXG ground-coupled antenna array maximizes both vertical and horizontal resolution at different depths: it makes it possible to resolve closely spaced rebars as well as imaging utilities buried deeper into the ground.

Note: Specifications subject to change. Other sizes are available on a custom order basis. Contact Codevintec for additional details.

Transmitting and receiving elements of the DXG1820. Other models have identical element spacing but with different number of channels depending on the antenna width.

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Software Examiner™

3D GPR data processing and analysis

Examiner software revolutionizes the processing and analysis of three-dimensional ground penetrating radar (GPR) data. Examiner provides an intuitive and user friendly environment for visualization, analysis, and reporting. It integrates GPS coordinates, maps, imagery and external annotations. Its unique functionality allows quick processing and navigating of large data sets. Additionally, the tool enables the user to generate output data for final reporting. These capabilities enable Examiner to dramatically reduce the time required to process 3D GPR data.

Analysis& Reporting

Raw GPR Data GPS Coordinates

Maps/Aerial Photos

User Supplied Annotations

GPR Data Processing

Annotations & Virtual Trenching

Feature Identification & Noting

Layer Tracing

User Defined Outputs

.dxf (AutoCAD) .kmz (Google

Earth) .txt (Annotations)

.wmv

GPR Data Optimization

Standalone Reports

3 rd Party Tools GPR Slide

RoadDoctor Metlab

Inputs

Outputs

Processing

Examiner dataflow

Processing & visualization

Examiner seamlessly handles and displays projects with multiple large GPR data files. A three-slice view allows easy navigation within the data volumes for detailed analysis. Users are offered a full resolution presentation to pan, zoom, and deep dive the data with real-time rendering. The data is displayed and traversed for an initial review giving the user the opportunity to quickly identify subsurface areas for further investigations.

Software highlights

> Optimized for large 3D GPR datasets.

> Results quickly available for field analysis.

> Geo-referenced maps and imagery.

> Virtual Trench option and 3D interface tracing.

> Adaptative Interference Suppression.

> Export to various formats, including DXF and KMZ.

Map overlays

Examiner features a map view showing geo-refer-enced depth slices. The near reality display makes it easier to interpret features across the data. Data geo-referencing is based on advanced GPS filtering to ensure the best possible accuracy. Examiner provides global map imagery through the integrated map ser-vice, OpenStreetMap. Geo-referenced images can be imported from aerial, satellite, photos or maps in almost any projection, placing the GPR data quickly and accurately in the surrounding environment.

3D annotations and virtual trench

Examiner showcases a powerful and user-friendly tool to draw three-dimensional points and multi-segment annotations. When using the “Virtual Trench” option, the user can display vertical slices of data across multiple swaths following annotation lines.

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Interface tracing

Examiner offers an advanced analysis tool for auto-matic interface/layer tracing. With a single click, it is possible to follow and trace an interface for kilome-ters using an automatic 3D tracing algorithm. The end result is visualization on screen as depth profiles and color coded maps.

Export & extensibility

Examiner imagery can be directly copied and past-ed into other applications for easy reporting or saved in the most commonly used image formats. It is also possible to generate a video to dynamically display how the data varies along a user selectable depth range. 3D processed data can be exported to a fully documented format which can then be imported into end-user developed software as well as leading third party analysis and reporting tools. Annotations, radar imagery and interfaces can be exported with rendered GPS data to various formats that are compatible with popular software such as AutoCAD (DXF) and Google Earth (KMZ). Traced interfaces can also be saved as point clouds in comma separated value files, or sum-marized in a comprehensive report with detailed sta-tistics.

3D GPR data from a 100 m x 100 m archaeological site.

Specifications

System RequirementsOperating System Windows 7 or 8

CPU 64-bit, Intel Core i7 recommended

Memory 8GB or greater

Disk capacity* 250 GB or more

Codevintec Italiana srl Milano via Labus, 13 – 20147 Milano Roma Lungomare P.Toscanelli,64 – 00122 Roma

[email protected] ph +39 02 4830.2175 www.codevintec.it fax +39 02 4830.2169

© 2017 February - Codevintec Italiana srl, Milano

Processed image exported to Google Earth.

*Disk drives must be formatted with a file system capable of storing large files (e.g. NTFS, not FAT/FAT 32). A Solid State Drive (SSD) will enhance performance, but is not required.

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