Title :
Two-dimensional autofocus for SAR range migration algorithm
Author :
Xinhua Mao;Jing Ding;Daiyin Zhu
Author_Institution :
Department of Electronic Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Abstract :
In this paper, the analytical structure of residual 2D phase error in RMA imagery is investigated. By incorporating the inherent phase structure knowledge, an efficient 2-D autofocus algorithm is proposed. The new approach estimates the 2-D phase errors in semi-blind manner, it offers clear advantages in both computational efficiency and estimation accuracy as compared with conventional blind 2-D autofocus algorithms.
Keywords :
"Synthetic aperture radar","Estimation","Azimuth","Algorithm design and analysis","Image resolution","Frequency-domain analysis","Image coding"
Conference_Titel :
Synthetic Aperture Radar (APSAR), 2015 IEEE 5th Asia-Pacific Conference on
DOI :
10.1109/APSAR.2015.7306227
