Modified frequency scaling algorithm for FMCW SAR data processing

作者：Jiang Zhihong^*; Huang Fukan; Wan Jianwei; Cheng Zhu

来源：Chinese Journal of Aeronautics, 2007, 20(4): 339-345.

DOI：10.1016/S1000-9361(07)60053-3

• fMCW radar
• SAR
• radar imaging
• frequency scaling algorithm

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.

• 出版日期2007-8
• 单位中国人民解放军国防科学技术大学