The clutter suppression based on FA and image contrast in TWI application

In through-the-wall imaging, the clutter, because of its great energy, has great effect on the detection of the targets. For the purpose of clutter suppression, factor analysis method has been studied and applied to TWI data. Besides, a new evaluation criterion, image contrast, for demonstrating the suppression performance is introduced. Compared to the SCR, the clutter suppression technique based on the FA and image contrast can efficiently suppress the clutter without a priori knowledge about targets. Simulation demonstrates the efficiency of the method.