A Direct Imaging Algorithm for Extended Targets Using Active Arrays

Thursday, October 20, 2005 - 11:40am - 12:30pm
EE/CS 3-180
Hongkai Zhao (University of California)
We present a direct imaging algorithm for both the location and geometry of extended targets. Our algorithm is based on a physical factorization of the response matrix of an active array. A resolution and noise level based thresholding is used for regularization. Our algorithm is extremely simple and efficient since no forward solver or iterations are needed. Multiple-frequencies can be used to improve the stability of our algorithm. We demonstrate the efficiency and roubustness with respect to both measurement noise and random background.