Auto-registration Imaging Algorithm Based on Extended Wavenumber Domain for Airborne Dual-antenna InSAR
Li Yin-wei①② Xiang Mao-sheng① Mao Yong-fei①②
①(National Key Laboratory of Science and Technology on Microwave Imaging, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China) ②(Graduate University of Chinese Academy of Sciences, Beijing 100039, China)
Abstract：In order to reduce the complex image registration processing for the airborne dual-antenna interferometric Synthetic Aperture Radar (SAR) system, the extended wavenumber domain ωK auto-registration imaging algorithm in the range is presented. For the mismatch caused by the path difference of two antennas, this algorithm realizes the precision registration of interferometric image in the range by means of high degree polynomial approximation using scaling principle in course of the imaging processing. Finally, through the processing of the simulation data and the X band’s real interferometric data, better interferograms are obtained and the validity of the algorithm presented in the paper is proved.
2012, Vol. 34 
