Improved identification of underground targets using video pulse radars by elimination of undesired natural resonances

Measured signals from underground scatterers using video pulse radars are corrupted by undesired resonances such as those associated with the antenna and various forms of clutter. Techniques are introduced to remove or suppress the signal associated with these resonances in an effort to enhance the target response. The resonances are suppressed by using a difference equation requiring the knowledge only of the poles of the original scattered signal, which are independent of excitation.