【摘要】 针对空间遥感望远镜对大视场和高分辨率的需求,本文提出了像方指向技术。首先设计了透射式大尺寸像面光学系统;接着,根据像面尺寸的要求,提出了一种基于像方指向的探测器机械交错拼接法;然后,分析了像方指向系统的工作原理及关键技术。最后,进行了实验成像并分析了系统的误差。实验结果表明:像方指向系统的指向精度需优于1.6mrad,探测器焦平面的平面度为20μm,采用该方法可以获取完整的大视场像面图像信息。更多还原

【Abstract】 In order to accomplish the requirement of large scale focal plane and high resolution during the development of space based remote optical sensors,we developed a focal plane pointed technique.First,we designed a transmission telescope with large focal plane.Then,we proposed a mechanical interleaving assembly method to achieve the required scale of focal plane.Besides,the function principle and some key techniques of the focal plane pointed telescope are analyzed.Finally,images are gained using the telescope and the system errors are discussed as well.Experimental results indicate that the pointing stability should be better than 1.6 mrad and the flatness of the focal plane should be confined in 20 μm.The focal plane pointed method can satisfy the system requirements of large scale focal plane.更多还原