Modified Frequency Scaling Algorithm for FMCW SAR Data Processing
Modified Frequency Scaling Algorithm for FMCW SAR Data Processing作者机构：College of Electronic Science and Engineering National University of Defense Technology Changsha 410073 China
出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)
年 卷 期：2007年第20卷第4期
页 面：339-345页
核心收录：
学科分类：08[工学] 0825[工学-航空宇航科学与技术]
主 题：FMCW radar SAR radar imaging frequency scaling algorithm
摘 要：This paper presents a modified frequency scaling algorithm for frequency modulated continuous wave synthetic aperture radar （FMCW SAR） data processing. The relative motion between radar and target in FMCW SAR during reception and between transmission and reception will introduce serious dilation in the received signal. The dilation can cause serious distortions in the reconstructed images using conventional signal processing methods. The received signal is derived and the received signal in range-Doppler domain is given. The relation between the phase resulting from antenna motion and the azimuth frequency is analyzed. The modified frequency scaling algorithm is proposed to process the received signal with serious dilation. The algorithm can effectively eliminate the impact of the dilation. The algorithm performances are shown by the simulation results.
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