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中文摘要：
针对双基地逆合成孔径雷达（ISAR）对空间目标单次观测时间有限,不容易获得长时间多视角观测下的回波数据,提出了利用空间目标运动的轨道重访特性,对多次观测数据进行融合成像。该方法给出了多圈次观测图像融合的原理,并通过后向投影算法（Back Proj ection,BP）对回波相位补偿后的数据进行相干融合。仿真结果表明,该方法能有效抵消噪声对成像的影响,得到高质量的 ISAR二维像。
英文摘要：
The time of single observation of space target of bistatic ISAR is limited,and it is hard to get a long time multi-angle observations echo data.An image fusion method of multipass observation data was proposed. By taking advantage of the orbit revisit character of space target,the principle of multipass observation image fu-sion was presented.And the echo data after phase compensation was coherent integrated through back proj ection algorithm.Finally,a single-scatter and multi-scatters model simulation experiment was carried out,and simula-tion results showed that the proposed method could offset the influence of noise and get high quality image.
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