Estimation of Efficiency of Modified Method of Detecting and Recognizing Shallowly Buried Objects

Abstract

A modified digital spectral analysis method of detection and discrimination of shallowly buried targets is presented The technique includes three steps. calibration of radar - subtraction of the ground surface return - modified range profiling and had been tested for different antennas system and objects. The method accounts for the antenna dispersion in the case of not too wide radiation pattern and considerably improves situation with unwanted multiply reflections between antennas and ground surface. It has been found that from the properties of peaks in the radar range profile (amplitude, the form of change from a minimum to a maximum) one can estimate the difference in contrast of the buried object and surrounding medium. It allows evaluating properties of the object approximately if the permittivity of the ground is known.