【摘要】 载体的不规则运动造成的多普勒中心与调频率的估计误差是合成孔径声纳(synthetic aperture sonar,SAS)成像质量下降的主要原因。研究了基于多视处理的图像域多普勒参数估计方法,证明了其能够满足SAS运动补偿的特点和应用要求,进而提出了一个完整的SAS运动补偿和成像的系统方案。最后,实际湖试结果也证明了该方案的有效性。更多还原

【Abstract】 In synthetic aperture sonar (SAS) imaging the estimation errors of Doppler center and Doppler rate due to the non-idealistic platform motions are the primary reason for degradation of image quality. The Doppler parameter estimation methods based on multi-look processing are studied and it is verified that the methods can satisfy the characteristic and applied demand of the SAS motion compensation. Futhermore a complete systematic method for SAS motion compensation and imaging is provided. Finally the real results of lake trail have verified also the effectiveness of given methods.更多还原