Three-dimensional ground penetrating radar imaging using multi-frequency diffraction tomography
- Lawrence Livermore National Lab., CA (United States)
In this talk we present results from a three-dimensional image reconstruction algorithm for impulse radar operating in monostatic pule-echo mode. The application of interest to us is the nondestructive evaluation of civil structures such as bridge decks. We use a multi-frequency diffraction tomography imaging technique in which coherent backward propagations of the received reflected wavefield form a spatial image of the scattering interfaces within the region of interest. This imaging technique provides high-resolution range and azimuthal visualization of the subsurface region. We incorporate the ability to image in planarly layered conductive media and apply the algorithm to experimental data from an offset radar system in which the radar antenna is not directly coupled to the surface of the region. We present a rendering in three-dimensions of the resulting image data which provides high-detail visualization.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- OSTI ID:
- 145983
- Report Number(s):
- CONF-9411140--Absts.; ON: DE95017252
- Country of Publication:
- United States
- Language:
- English
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