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Enabling 3D data capture

Posted: 23 Dec 2009     Print Version  Bookmark and Share

Keywords:3D data capture  data acquisition  GPR 3D 

The use of improvised explosive devices in the Iraq and Afghanistan conflicts has made clear that the ability to survey objects underground rapidly and effectively—essentially to see the unseen—is a critical requirement for safeguarding today's war fighter, as well as for making combat regions habitable once hostilities have ended. One approach to searching for improvised explosive devices (IEDs) is to use 3D ground penetrating radar (GPR).

Until recently, 3D GPR data acquisition was a time-consuming process that required multiple survey lines to be collected in a regular pattern. Now, a novel step-frequency GPR (SF GPR) system, using an advanced antenna array for high-resolution 3D subsurface imaging, speeds and simplifies the use of 3D GPR by eliminating the need for multiple passes while providing real-time visual data that lets the user immediately refine the search area and radar resolution used for searching.

The approach, employing a unique application of radio-wave-based step-frequency GPR, uses a multi-channel radar array to enable single-pass 3D analysis of underground artifacts in real-time, promising faster, simpler detection of IEDs in combat environments. A fielded SF GPR operates with a standoff antenna array to obtain maximum resolution at shallow depths, making the system suitable for detecting land mines and IEDs below the ground surface.

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