遥感卫星多镜头多光谱相机的配准技术

Registration of Multi-Lens Multi-Spectrum Cameras for Use in Remote Sensing Satellites

分析了遥感卫星多镜头多光谱相机中影响光学配准的主要因素,进行了配准误差的分配与设计,并针对配准中的两个关键因素——焦距一致性和结构稳定性进行了分析,采用像高测量法调整焦距的一致性,通过增加系统刚度、改进系统的连接方式以及采取热控措施等解决结构稳定性问题.试验表明:所采取的措施有效地保证了多镜头相机的光学配准,确保了遥感相机的实际应用.

The main factors influencing optical registration for multilens multispectrum cameras in remote sensing satellites are analyzed, and the registration errors are distributed and designed. The two key factors in registration, i.e., the uniformity of focal lengths and stability of structures, are analyzed. The uniformity of focal lengths is achieved by measuring the image height. The stability in structures is to be achieved by increasing the system rigidity, improving the mode of system connection as well as by employing thermal control measures. Experimental results showed that these measures have effectively ensured proper optical registration of the multilens multispectrum cameras, and have guaranteed the practical application of the camera in remote sensing.