UWB multi-static SAR with image stackng for land mine detection

We investigate techniques for improving the signal to clutter ratio of an ultra wide-band SAR designed to detect small mine-like objects in the surface of the ground. In particular we collected images using different bistatic antenna configurations in an attempt to decorrelate the clutter with respect to the targets. The images were converted to a reference depression angle, summed, and then converted to ground coordinates. The resulting target strengths were then compared with the amplitude distribution of the ground clutter to show the improvement obtained. Use of the bipolar response to further enhance target to clutter ratios was also considered. Whilst some improvement was demonstrated, this was for the relatively easy scenario of targets on the surface partially obscured by grass.