中文摘要：

增强成像方法将待检测目标的先验知识引入到成像过程中对其进行增强，有助于提高图像的直观性和改善后续检测效果。旋转体目标具有散射特性的方位不变性，而大多数人造和自然杂波不具备该特点，因此可利用方位散射不变性对旋转体目标进行增强成像。该文首先提出了方位散射熵的概念以度量目标不同方位向散射特性的一致性，在此基础上提出了基于方位散射熵的旋转体目标增强成像算法，最后针对实际机载SAR应用中存在的位置和姿态误差给出了结合运动误差补偿的方位散射熵的计算方法。实测数据结果证明了该文所捉方法的有效性和实用性。

英文摘要：

By applying the prior knowledge of targets to be detected, enhanced imaging for the targets can be realized and beneficial improvements in image quality and detection performance can be expected. Body Of Revolution （BOR） has the unique feature of aspect scattering invariance, which can be used for the classification of BOR targets. In this paper, Aspect Scattering Entropy （ASE） is introduced to measure the aspect invariance of target scattering, Then the enhanced imaging algorithm based on ASE is proposed to emphasize BOR targets. Afterwards, the effect of fluctuant location and attitude on enhanced imaging is analyzed, and compensation method is integrated with aspect scattering feature extraction. The results of experimental data demonstrate the effectiveness and practicability of the proposed algorithm.