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14 July 2003 Fiber optic link reference system for ground-penetrating radar measurements
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An RF network analyzer normally uses a reference port to excite a device under test. The return from the device is compared in amplitude and phase to the reference to characterize the S-Parameters (reflection and transmission) of the device under test (DUT). In this case, the DUT was 30 meteres of limestone above a mine in Northwest Pennsylvania, which was being tested for dielectric constant and attenuation at 3-33 MHz as part of a ground penetrating radar development effort. This paper describes the test configuration using a wideband fiber optic link for the reference signal, and provides plots of the experimental results.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Russell D. Brown, E. Douglas Lynch, James M. Van Damme, Norman P. Bernstein, and Alan George "Fiber optic link reference system for ground-penetrating radar measurements", Proc. SPIE 5104, Enabling Photonic Technologies for Aerospace Applications V, (14 July 2003);

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