Modified Frequency Scaling Algorithm for FMCW SAR Data Processing
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.
作 者： Jiang Zhihong Huang Fukan Wan Jianwei Cheng Zhu 作者单位： College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China 刊 名： 中国航空学报（英文版） ISTIC 英文刊名： CHINESE JOURNAL OF AERONAUTICS 年，卷(期)： 2007 20(4) 分类号： V2 关键词： FMCW radar SAR radar imaging frequency scaling algorithm