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Stream EM multi channel Ground Penetrating Radar is a vehicle based GPR solution for  utility locating and mapping with 40 separate channels for very wide area mapping of buried utilities in hundreds to thousands of hectares. The solution includes double polarized (VV and HH) antennas, to cover wide road surfaces with only longitudinal scans required to capture  both longitudinal and transversal pipe & cable detection in ONE GO with the data collection at a maximum speed of 15 km/h.

STREAM EM represents the most advanced technology sub-surface tomographic radar equipment worldwide for EXTENSIVE 2D/3D UTILITY ASSET MAPPING based on massive arrays of multifrequency, multipolarized antennas setting unprecedented standards for accuracy and productivity in sub surface utility mapping.

It is easily dismountable, enabling it to be transported in a van. It can be reconfigured for mapping sidewalks and difficult areas and can also be easily adapted, by using suitable kits, for other applications such as  archeological, environmental, roads and runway. 

Product Specification


(200 MHz)
(200 MHz)
N°2 DML (200 MHz) +
N°1 DCL (200-600 MHz)
Number Of Antenna Box
Number Of Antenna Dipoles
Scan Width (cm)
Data spacing in transversal direction (cm)
Antenna Weight (Kg)
Antenna Trolley Dimension (m)
Length: 2.02, Width: 2.10
Trolley Weight (Kg)
Typical Data collection speed Km/h
Technical Specifications
Data Logger Panasonic CF30 PC or similar
Radar Control Unit 3 DAD MCH FastWave synchronized
Number Of Channels 40
Antenna Frequency 200 and 600 MHz
Antenna Polarization Horizontal (HH) and Vertical (VV)
Transversal Sampling Full configuration (2 DML + 1 DCL): 6 cm
Positioning Survey wheel GPS or Total Station (not included)
Collection Speed Up to 15 Km/h in full configuration
Power Consumption 100 Watt
Battery Operating Time > 8.0 h
DAD - Connection to Data Logger Ethernet LAN
Size On Ground Length 2.02 m Width: 2.10 m
Weight Full Configuration 228 Kg
Survey Path Width 1.84 meter
Environment Rain proof
Software Specifications
Processing Software GRED 3D Utilities Stream, including :
Automatic and Manual Data Processing
Propagation Velocity Estimation (hyperbola fitting)
2D/3D Representation
Data Fusion for different frequency
Interactive 2D Data Inspector
GPS Location
Irregular volume representation
B-scan view C-scan view
Colors scale/palette
GPS Markers View
Insert targets function
Output Data Automatic data transfer into CAD maps
    • Massive array of 40 antennas in two polarizations: A massive array of 40 antennas ensures a high sampling density. This results in accurate 3D modeling of the subsurface and ease of detecting buried targets and anomalies. The use of both polarizations provides optimal detection of main and junction pipes at the same time.


    • Speed : Stream EM can be towed by a car up to 15 km/h (12mph). This boosts productivity as Stream EM can survey many miles per day, can be operated by 2 people, is able to run continuously without interrupting traffic and allows the crew to remain safe inside the vehicle.


    • Accurate to less than 5 cm (2 inches): Stream EM can be interfaced with GPS or a total station in order to accurately geo-locate the surveyed area and to individually distinguish all the pipes, cables and anomalies detected with high accuracy.


  • Professional Subsurface Utility Engineering (SUE) survey:Automatic transfer to CAD/GIS: Pipes, cables and buried object can be automatically transferred to CAD and GIS format with a proprietary software tool.

STREAM EM is supplied with K2 Stream FastWave, Snailnav and the GRED HD3 software suite.

K2 Stream FastWave
This software is able to acquire, and display in real time, data coming from more than 48 IDS antennas. It integrates all the functions of the K2 FastWave acquisition software but can handle more inputs. This software is supplied with the control unit.

Snailnav Navigation Software
The Snailnav navigation software used for GPS real time positioning is able to project GPS trajectories in real time, helping the operator to collect data with great accuracy without leaving any black spots and to avoid time wasted going over the same area more than once.

Gred HD3
Gred HD3 is specifically designed to offer an integrated framework for CAD and GIS, combining the characteristics of industrial productivity with high levels of reliability. It also offers unique features such as the creation and display of 2D and 3D tomograms in just a few minutes after the basic filtering of the raw data and the direct export of structures and objects of any generic shape to CAD or GIS maps. The software is fully compatible with any GPS or positioning data in order to obtain automatically geo-referenced data plots.


Key features include:

  • Real-time display of trajectories using GPS or Total Station.
  • 2D and 3D tomography for an immediate visualization and detection of anomalies.
  • Automated transfer to CAD/GIS: the identified target can be automatically transferred to CAD or GIS maps for professional SUE / utility mapping.
  • Geolocated data information and visualization

Stream EM can be optionally equipped with the GPR-Slice software platform

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