Ground penetrating radar based on ultrawideband time-reversal method

摘要

A new imaging method based on utilization of ultrawideband (UWB) frequency data is proposed for underground target detection. A monostatic antenna is moved over ground surface to acquire the scattering data. The frequency samples of the scattering information are used to form the monostatic data matrix. The singular value decomposition (SVD) of the proposed monostatic scattering matrix is used in DORT (French acronym for decomposition of the time reversal operator) method. The performance of the proposed method is investigated numerically by applying it to discrete scatterers embedded in homogeneous and continuously random inhomogeneous media. The effect of synthetic aperture size on image resolution is studied. It is observed that wider aperture size yields to better focusing resolution.