Proceq GS8000 Subsurface Ground Penetrating Radar (GPR)
Proceq’s GS8000 Ground Penetrating Radar (GPR) unit is an ideal solution for larger-scale subsurface applications like underground utility location and mapping, geophysical investigations, infrastructure asset inspection, and forensic and archeological studies. The walk-behind cart is well-suited for scans of pavements, bridge decks, concrete slabs, and “off-road” terrain. Stepped Frequency Continuous Wave (SFCW) technology sweeps over an ultra-wide 0.2–3.4GHz bandwidth, balancing signal penetration depth and object resolution in one antenna without the compromises of signal frequency pulsed-radar systems.
GPR data scanned at speeds of up to 22mph (35kmh) is displayed on the fly in real time. The maximum penetration depth is 33ft (10m). In average soil conditions, penetration is approximately 12ft (3.7m). A 0.4in (10mm) metallic object can be detected at up to 300mm (12in) deep. Specifications apply to GPR devices sold in North America.
An encrypted Wi-Fi connection to the user’s Apple iPad® provides the ideal platform to view, connect, and distribute results. The included GS8000 Pro software leverages the iPad’s powerful post-processing capacity, high visual resolution, and reporting to collaboration features. Instantly upload scan data, graphics, and report information to the cloud from any location for immediate sharing with stakeholders everywhere. The subscription-based software provides free updates and releases.
Data is displayed in real-time during a scan. Raw scan data is migrated to display realistic 2D or 3D images, and with Apple’s ARKit™, augmented reality (AR) images can be overlaid on real-world views through the iPad. Real-time, in-situ images of subsurface elements do not require extensive interpretation by experts.
Separating the data processing and display hardware and software from the sensing unit helps to future-proof the system and ensure upgradeable performance for years to come. Any iPad or iPad Pro unit can be used. The iPad Pro® Wi-Fi + Cellular model with 1TB storage capacity and iOS 11 or higher is recommended.
An onboard multi-band Global Navigation Satellite Systems (GNSS) antenna provides accurate positioning and receives signals from GPS, Glonass, Galileo, and Beidou system satellites. With an active internet connection, State Space Representation (SSR) augmentation further refines geolocation data and records it automatically with corrected precision of 0.5–2in (1– 5cm). Tags, marks, photos, notes, and voice note observations with precise locations are added to the report data during scanning.
The completely wireless system is fully integrated with a collapsible and ergonomically adjustable rolling cart that easily rolls over varied terrain. The antenna quickly changes from ground-coupled, dual-axis floating alignment to air gap positioning with 1in (25mm) clearance. The maximum length for straight-line scans is 9.3mi (15km), and grid scans can be performed to a size of 260x260ft (80x80m).
Power is provided for a full working day by eight rechargeable flight-safe NiMH C-batteries (not included) in battery packs that can be hot-swapped or a user-supplied USB-PD compatible power bank.
GS8000 Subsurface GPR includes the GS8000 sensing unit with a two-year subscription to GPR Live Pro software, Wi-Fi Module, a GNSS geolocation antenna, and a collapsible push-pull cart. A power supply, AR marker, basic tools, and USB cables are also included.
Subsurface GPR Pro systems require a software subscription for full functionality. The Live Pro Software allows the ability to share images and data with your clients via URL, HTML, etc., 3-dimensional functionality, and augmented reality. A two-year subscription is included with CT-180R. Subsequent one-year subscription renewals can be purchased as CTA-61 and are required beginning two years from receiving and activating the systems original subscription.
Features:
- Push-pull cart with variable ground clearance is well-suited for multiple terrains
- Reading depth up to 33ft (10m); approximately 12ft (3.7m) in average soil conditions
- Real-time scanning at speeds of up to 22mph (35kmh)
- Performs scans up to 9.3mi (15km) long or a 260x260ft (80x80m) grid
- The onboard multiband GNSS antenna provides accurate positioning and receives signals from multiple system satellites
- Apple iPad® display and data processing uploads to the cloud for instant collaboration and allows upgrades without replacing the scanning unit
- Covers frequencies from 0.2 to 3.4GHz using SFCW technology
- 2D, 3D, and Augmented Reality (AR) imagery
- Encrypted Wi-Fi connection
Included Items:
- GS8000 Subsurface GPR
- Two-year subscription to GS8000 Live Pro software
- Wi-Fi module
- GNSS geolocation antenna
- Collapsible push-pull cart
- Fiber carbon pole
- Power supply
- AR marker
- USB cables and basic tools
Proceq GS8000 Subsurface Ground Penetrating Radar (GPR) Meets Standard(s): ASCE 38-02
View the full line of Rebar Locators and Flaw Detection
Proceq GS8000 Subsurface Ground Penetrating Radar (GPR) for Concrete Scanning
Introduction to Ground Penetrating Radar (GPR)
**Ground Penetrating Radar (GPR)** is a non-destructive geophysical method that uses high-frequency radio waves to image the subsurface. GPR is widely used in various fields, including civil engineering, archaeology, environmental studies, and construction, to detect and map subsurface structures, utilities, and other features.
Basic Principles of GPR
GPR operates by transmitting **radar pulses** into the ground using a **transmitter antenna**. These pulses of **electromagnetic energy** travel through the subsurface materials and are reflected back to the surface when they encounter boundaries with different **dielectric properties**. The reflected signals are received by a **receiver antenna**, and the time taken for the radar pulses to return is measured. This **two-way travel time** is used to determine the depth and properties of the subsurface features.
Key Components
1. **Transmitter Antenna**: Emits high-frequency radar waves into the ground.
2. **Receiver Antenna**: Captures the reflected radar signals.
3. **Control Unit**: Processes the data and displays the results.
4. **Digital Storage Device**: Stores the GPR data for further analysis.
Proceq GS8000 GPR
The Proceq GS8000 is an advanced system designed for concrete scanning and subsurface investigations. It employs state-of-the-art GPR technology to provide high-resolution imaging of subsurface structures, making it an ideal tool for various applications in construction and engineering.
Applications of the Proceq GS8000
1. **Concrete Scanning**: Locating rebar, voids, and other embedded objects within concrete structures.
2. **Utility Detection**: Identifying and mapping underground utilities such as pipes and cables.
3. **Archaeological Surveys**: Detecting and mapping buried archaeological features and artifacts.
4. **Environmental Studies**: Investigating soil and groundwater conditions.
5. **Construction Quality Control**: Assessing the integrity and quality of construction materials.
Technical Specifications
- **Frequency Range**: The Proceq GS8000 uses a range of frequencies to balance depth penetration and resolution.
- **High-Frequency Antennas**: Provides high-resolution imaging for detailed analysis of subsurface features.
- **Data Storage and Analysis**: Equipped with digital storage devices for recording GPR data, which can be analyzed using specialized software.
Understanding GPR Data
The **GPR data** consists of reflections from various subsurface features, which are processed to create an image of the subsurface. The data interpretation involves analyzing these reflections to identify the presence and characteristics of subsurface objects. Key factors affecting GPR data interpretation include the **dielectric permittivity** of the materials, the **frequency range** of the radar waves, and the **electrical conductivity** of the subsurface materials.
GPR Method and Its Advantages
The GPR method is preferred in many applications due to its non-destructive nature and ability to provide detailed subsurface images. Some advantages of using GPR include:
1. **Non-Destructive**: GPR does not require any drilling or excavation, preserving the integrity of the site.
2. **High Resolution**: Capable of detecting small and shallow features with high accuracy.
3. **Versatile**: Suitable for a wide range of materials and conditions.
4. **Real-Time Results**: Provides immediate feedback, allowing for on-the-spot decision-making.
Challenges and Limitations
Despite its advantages, GPR has some limitations. The effectiveness of GPR can be influenced by factors such as:
1. **High Electrical Conductivity Materials**: Materials with high conductivity, such as clay soils, can attenuate the radar signal, reducing the depth of penetration.
2. **Moisture Content**: High moisture content in the soil can affect the signal strength and resolution.
3. **Complex Subsurface Conditions**: Highly heterogeneous materials can complicate data interpretation.
Enhancing GPR Performance
To enhance the performance of GPR, various techniques and practices can be employed:
1. **Calibration**: Regular calibration of the GPR equipment to ensure accurate measurements.
2. **Frequency Selection**: Choosing the appropriate frequency for the specific application to balance resolution and penetration depth.
3. **Data Processing**: Advanced data processing techniques to improve image clarity and accuracy.
GPR in Practice
Concrete Scanning
The Proceq GS8000 is particularly effective in **concrete scanning** applications. By using high-frequency radar waves, it can accurately locate and map rebar, voids, and other embedded objects within concrete structures. This capability is crucial for assessing the integrity of concrete and ensuring the safety of construction projects.
Utility Detection
For detecting underground utilities, the Proceq GS8000 can identify the presence and location of pipes, cables, and other utility lines. This application is essential for planning construction activities and avoiding accidental damage to existing utilities.
Archaeological Surveys
In archaeology, the Proceq GS8000 GPR is used to detect and map buried artifacts and features without disturbing the site. This non-invasive method allows archaeologists to study and document subsurface features accurately.
Conclusion
The Proceq GS8000 Subsurface Ground Penetrating Radar (GPR) is a powerful tool for a wide range of applications in engineering, construction, archaeology, and environmental studies. Its ability to provide high-resolution images of the subsurface makes it invaluable for locating and mapping buried objects, assessing material properties, and ensuring the quality and safety of construction projects. By leveraging the advanced capabilities of GPR technology, professionals can achieve more accurate and reliable results in their investigations.