中文摘要：

对三线阵CCD推扫式遥感立体成像方式进行了讨论,研究了推扫式遥感成像模型中的光学共线方程成像模型,分析了地形地貌梯度对推扫式遥感成像过程的影响。最后,在基于不变轨和固定姿态的前提下,以高斯合成曲面模拟三维地形地貌梯度,用数学仿真的方法验证了地形地貌梯度对推扫式遥感成像精度的影响,并结合嫦娥一号数据进行了分析。实验结果表明：推扫式遥感立体成像过程中,地形地貌起伏的梯度变化在飞行方向上引入了相邻轨图像的信息重叠或遗漏,在推扫方向上引入了投影误差。

英文摘要：

The 3-line array CCD push-broom remote sensing stereo imaging mode was discussed and the rigorous optical collinear imaging model of the remote sensing stereo imaging was studied in this paper.Then the effect of the topographic gradient on the push-broom remote sensing stereo imaging was analyzed.Finally,based on the premise of invariant orbit and fixed attitude,the 3D topographic gradient was simulated by using the Gauss synthesis curve and the effect of the topographic gradient on the space borne linear CCD push-broom imaging was verified with the math simulation method,which was also certificated with the CE-1 CCD image data.The experimental results show that,because of the topographic gradient,the information omission or overlap between the adjacent remote sensing images is created in the flying direction and the projection error is created in the push-broom direction during the push-broom remote sensing stereo imaging.