A calibration procedure for ground-based RF tomography

Ground-based RF Tomography requires accurate calibration to ensure that acceptable image quality is achieved. A calibration scheme that exploits the direct path between any transmitter and receiver pair was presented in [1], valid only when radiators are approximated as Hertzian dipoles. In this work, a generalized calibration procedure that is valid for most antennas is presented. The calibration is achieved by placing a known target slightly outside the area under observation. The known target can be of any shape, as long as numerical/analytical EM predictions are available. Preliminary experimental results are presented.