摘要
弹载聚束式SAR成像可以转化为非均匀转动成像,如何消除非均匀转动的影响是关键技术之一。Spectral-fit法的目的是从原始信号的非均匀样本中得到该信号的真实频谱。文章分析了弹载聚束SAR的特点,研究了非均匀转动对成像的影响,将Spectral-fit法应用到方位向处理中,实现了非均匀转动的补偿和方位向分辨的有机结合。最后仿真结果验证了算法的有效性。
Missile-borne spotlight SAR can be converted to nonuniform rotation imaging after translational motion compensation. How to eliminate its infection is fatal to radar imaging. The spectral-fit method is applied in recovering the real spectrum of the original signal from its nonuniform samples. In the paper, an analysis of the characteristics of missile-borne spotlight SAR is gived and the effect of nonuniform rotation to imaging is studied. And Spectral-fit method is introduced into azimuth processing to realize the combination of nonuniform rotation compensation and azimuth imaging resolution. Finally the processing is proved to be correct by the computer simulation.
出处
《制导与引信》
2007年第4期40-44,共5页
Guidance & Fuze
关键词
合成孔径雷达
非均匀转动
成像
补偿
synthetic aperture radar
nonuniform rotation
imaging
compensation
作者简介
任国磊（1982-），男，硕士，主要从事雷达成像技术的研究。
