【摘要】 对SAR图象中纹斑噪声的统计特性进行了详细的数学推导,同时对消除纹斑噪声的成像辅助技术———多视处理进行了深入研究,并利用基于多视处理的子孔径相关算法,对SAR系统的多普勒调频斜率fR进行了估计,将其用于成像,其精度和效果都令人满意.更多还原

【Abstract】 The phenomenon,known as speckle noise in SAR (synthetic aperture radar) image is analyzed,its statistical characteristics are studied,and multiple look processing technique is introduced to reduce speckles.Then,the "Sub-Aperture Correlation algorithm",which is based on multiple look processing,is used for estimating the key parameters,Doppler frequency rate f_R,of SAR imaging system.Using the algorithm,satisfactory imaging results are obtained.更多还原