On the use of multiresolution analysis for subsurface object detection using deep ground penetrating radar

摘要

New ground penetrating radars for the vehicle mounted system can penetrate further into the ground, providing theopportunity of detecting objects that are deeply buried. A deep target has less obvious edge behaviors, especially if ithas low-metal or non-metal content, making the edge based algorithm less effective for the detection. We shall explorethe use of multiresolution time-frequency analysis technique by the log-Gabor filters to improve the detection of deeptargets. They act on the 2-D image at an alarm location, generate multiresolution outputs and produce classificationfeatures for detection. The multiresolution analysis is able to preserve the edge behavior while at the same time formsthe extra dimension of resolution (frequency) to better characterize a target signature for distinction with false alarms.Results on the detection performance at two government test sites validate the encouraging performance of the proposeddetector.