【摘要】 介绍了合成孔径雷达成像中的多普勒效应.重点阐述了多普勒中心频率fD的3种估计方法,并通过编程予以实现.对方位模糊数m产生的原因进行了概述,分析并实现了方位模糊数m的图像估计法.最后将估计出的fD和m用于成像,均获得了较好的实验结果.更多还原

【Abstract】 Doppler effect in Synthetic Aperture Radar(SAR) is first introduced.Then three methods for estimation of Doppler central frequency f_D are presented.Next,the advantages and disadvantages of the three methods are analyzed and compared using experimental data.A method for estimation of the blur number m of the frequency f_D is proposed.Using the estimated f_D and m in SAR imaging,the results are good as expected.更多还原