Cross-Correlation BP Algorithm for UWB Pulse Through-Wall Radar

According to the strong correlation between the transmit signal and received signal of UWB pulse through-wall radar, a cross-correlation back-propagation (BP) algorithm is proposed. The cross-correlation signals between received signals and transmit signal are first formed and then are used to generate their coherent imaging by using BP algorithm. The electromagnetic models for through wall scenarios are setup based on FDTD method. Imaging results of two methods show that the cross-correlation BP algorithm has great advantages than general BP algorithm at the aspects of improving the target imaging localization precision and the signal noise ratio of the imaging.