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Computer Assisted Radar Tomography (CART) is a powerful imaging technology that provides the best "pictures" of underground features that can be obtained today. Using CART as a tool during subsurface investigations adds a new dimension to underground imaging. As opposed to single-channel GPR systems that provide only 2-dimensional images, CART is an innovative, 16-channel GPR imaging system that provides accurate 3-D images of underground features.
The CART system is towed much like a "bush-hog" mower and collects a complete swath of underground data up to 6.5 feet wide in a single pass. Therefore, large areas can be scanned with 100% complete coverage in a fraction of the time it takes using conventional GPR systems. And since the precise horizontal position of the CART system is continuously tracked and recorded during data collection by a robotic total station, there is no need to survey utility marks after the fact.
Following data collection and processing, all target features such as utilities, voids, debris, building foundations, etc. can be seamlessly integrated into AutoCAD, MicroStation, or GIS deliverables. The final product can be customized to meet the Clients' needs. After all, the true value of any technology is its ability to simplify the complex and make the data usable for all stakeholders in a project.
Simply put, CART is an innovative tool for solving complex underground mapping issues. It saves time and money, and improves - not sacrifices- detail and accuracy. Used in conjunction with conventional technologies, CART provides the most information achievable without digging.
Features
- Takes the guesswork out of excavating, thereby avoiding costly mistakes
- Detects metallic materials and non-metallic materials such as plastics/PVC, fiberglass, concrete, vitreous clay, etc.
- Facilitates detailed 3-D images
- Maps up to a 6.5-foot wide area with one pass
- Provides high degree of accuracy horizontally and vertically
- Can map large areas quickly and cost effectively
- Helps to focus excavations in archaeological investigations
- Detects cracks, voids, and buried assets in road surfaces
- Serves as a "virtual excavation" of the subsurface
Applications
- Subsurface Utility Engineering (SUE) Investigations
- Highway/Road Non-Destructive Evaluations (voids, cracks, etc.)
- Environmental Investigations
- Archaeological Investigations
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