RoadScan: Ground-Penetrating Radar System for Road Inspection

The RoadScan™ 30 system from Geophysical Survey Systems Inc. (GSSI) offers an effective tool for rapidly determining pavement layers at high speeds. It can collect data densities that cannot be obtained using other labor-intensive methods often used for pavement testing.

RoadScan: Ground-Penetrating Radar System for Road Inspection

Image Credit: Geophysical Survey Systems

RoadScan: Ground-Penetrating Radar System for Road Inspection

Image Credit: Geophysical Survey Systems

Applications

  • Assess base and sub-base conditions
  • NDT road evaluation
  • Measure asphalt before milling operations
  • Measure pavement thickness
  • Determine areas to core

Features

  • SIR 30 control unit
  • SIR 30 transit case
  • SIR 30 power supply
  • 1 or 2 GHz Horn antenna
  • 7-m Control cable
  • Wheel-mounted distance measuring instrument (DMI)
  • Two-year warranty

Quick and Effective Road Analysis Surveys

Users can determine pavement layer thickness and evaluate base and sub-base layers with limited, to no need, for coring.

RoadScan: Ground-Penetrating Radar System for Road Inspection

Image Credit: Geophysical Survey Systems

Non-Destructive Pavement Testing

The RoadScan can rapidly collect pavement layer thickness data. The system obtains data at highway speeds, which avoids the need for lane closures and offers a safer working environment.

RoadScan: Ground-Penetrating Radar System for Road Inspection

Image Credit: Geophysical Survey Systems

Deliver Pavement Evaluation Results

Users can easily export data as ASCII output files for simple data transfer to other software programs. Alternatively, data results can be migrated as Google Earth™ .kml file for optimized visualization.

RoadScan: Ground-Penetrating Radar System for Road Inspection

Image Credit: Geophysical Survey Systems

Data Examples

Pavement Layer Data 1

Data demonstrates the base layer (green) with original pavement (red) and pavement overlay (blue). This data was gathered with the help of the RoadScan 30 featuring the 1 GHz Horn antenna.

RoadScan: Ground-Penetrating Radar System for Road Inspection

Image Credit: Geophysical Survey Systems

Pavement Layer Data 2

Dual-channel data represents data related to pavement layer (top profile) gathered using a 2-GHz Horn antenna, as well as base/sub-base layer data gathered using a 400-MHz antenna (bottom profile).

RoadScan: Ground-Penetrating Radar System for Road Inspection

Image Credit: Geophysical Survey Systems

Pavement Layer Data Exported to Google Earth™

Users can deliver outcomes with ASCII output files for simple data transfer to other software programs. This data example constitutes RoadScan 30 data outcomes combined with Google Earth™.

RoadScan: Ground-Penetrating Radar System for Road Inspection

Image Credit: Geophysical Survey Systems

Specifications

Source: Geophysical Survey Systems

System SIR 30
Antenna support Compatible with all GSSI analog antennas
Number of channels Records data from 1 to 4 hardware channels simultaneously; two 4 channel systems can be connected to form an 8 channel system
Data storage Internal memory: 900 GB, GPS data logged internally
Display modes Linescan and O-scope. In Linescan display, 256 color bins are used to represent the amplitude and polarity of the signal
Operational modes External laptop, standalone with external monitor and keyboard or remote command set
Data acquisition
Data format RADAN® (.dzt)
Scan rate interval User-Selectable
Output data resolution 32-bit
1-4 Channels @ 100 KHZ PRF Samples | Max Rate (scans/Sec)
  256 | 326 / 512 | 178 / 1024 | 93 / 2048 | 48 / 4096 | 24 / 8192 | 12 / 16,384 | 8
1-4 Channels @ 800 KHZ PRF Samples | Max Rate (scans/Sec)
  256 | 1449 / 512 | 990 / 1024 | 606 / 2048 | 341 / 4096 | 182 / 8192 | 94 / 16,384 | 48
Samples per scan 256, 512, 1024, 2048, 4096, 8192, 16,384
Time range 0-20,000 nanoseconds full scale, user-selectable Gain: Manual adjustment from -42 to +126 dB. Number of segments in gain curve is user-selectable from 1 to 8.
Standard real-time filters Linescan and O-scope. Infinite Impulse Response (IIR) - Low and High Pass, vertical and horizontal Finite Impulse Response (FIR) - Low and High Pass, vertical and horizontal
Advanced real-time filters Migration, Surface Position Tracking, Signal Floor Tracking, Adaptive Background Removal
External marker Three different inputs/codes: Antenna, Front panel, Accessory connector
Automatic system setups Linescan and O-scope. Storage of an unlimited number of system setup files for different survey conditions and/or antenna deployment configurations
Languages  
English and Chinese
Operating  
Operating temperature -10 °C to 50 °C external (14 °F to 122 °F)
Power 260 W max at 95-250 VAC 50/60 Hz with the AC supply or 30 A max continuous at +10 VDC to +28 VDC
Transmit rate Up to 800 KHz (International), US/Canada and CE rates depend on antenna model
Input/Output
Available ports Antenna inputs (2 or 4), Survey wheel, Marker, DC power input, Serial RS232 (GPS port), Sync connector, Accessory connector, HDMI video, Ethernet to PC, 4 USB ports
Mechanical
Dimensions 17.7 x 13 x 5.1 in (45 x 33 x 13 cm)
Weight 18.5 lbs (8.4 kg)
Relative humidity <95% non-condensing
Storage temperature -40 °C to 60 °C

 

Accessories

Antenna Vehicle Front Mount

This RoadScan system accessory has been engineered for semi-permanent installation on a vehicle. In the case of in-use operation, a mounting bracket should be welded to the vehicle frame.

RoadScan: Ground-Penetrating Radar System for Road Inspection

Image Credit: Geophysical Survey Systems

Antenna Vehicle Trailer Mount

This RoadScan system accessory is an attachable/removable option for users who choose to use the vehicle trailer hitch. This accessory can be easily disintegrated for storage and transportation.

RoadScan: Ground-Penetrating Radar System for Road Inspection

Image Credit: Geophysical Survey Systems

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