Title :
SAR imaging using Fast Factorized Backprojection based on Optimal Regional Partition
Author :
Jiang Xiaolong ; Wang Jian ; Song Qian ; Zhou Zhimin
Author_Institution :
Coll. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
This paper presents a study of an improved SubImage based variants of the time domain Synthetic Aperture Radar (SAR) algorithm Fast Factorized Backprojection (FFBP). Sub-Image FFBP based on Optimal Regional Partition (ORP) (SIFFBP-ORP) algorithm is proposed by analyzing the regional division constraints. It provides a way to solve the acceleration-decline problem of the conventional SIFFBP algorithm when the SAR system has a small integration angle. The result of SIFFBP-ORP algorithm shows that it is faster than traditional SIFFBP with reduction computational time of about 7 times.
Keywords :
radar imaging; synthetic aperture radar; time-domain analysis; SAR imaging; SIFFBP-ORP algorithm; acceleration-decline problem; fast factorized backprojection; improved subimage based variant; optimal regional partition; regional division constraint; time domain synthetic aperture radar algorithm; Apertures; Approximation algorithms; Azimuth; Image resolution; Imaging; Partitioning algorithms; Synthetic aperture radar;
Conference_Titel :
Radar Conference, 2014 IEEE
Conference_Location :
Cincinnati, OH
Print_ISBN :
978-1-4799-2034-1
DOI :
10.1109/RADAR.2014.6875589
