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提出了一种以彩色大面阵CCD探测器作为成像介质的大视场数字航空摄影相机设计技术。采用对称Russar型光学系统,在获得了大视场角的同时最大程度的降低了光学畸变;设计了精确的微位移传动系统移动CCD探测器以补偿前向像移,提高了相机的动态分辨率;设计了一种双叶片的中心式机械快门,获得了宽范围的曝光时间控制,保证了探测器的均匀曝光及合适的图像重叠率。地面及空中成像测试中相机的静态分辨率达到了CCD特征频率的要求,获得了清晰的航拍彩色图像,表明相机的各项技术性能满足要求,该相机技术已应用到国土资源的遥感普查中。
A large-field digital aerial photography camera design technology using color large area array CCD detector as imaging medium is proposed. Symmetric Russar optical system is used to minimize the optical distortion while obtaining a large field of view. An accurate micro-displacement mobile CCD detector is designed to compensate the forward image shift and improve the dynamic resolution of the camera A two-blade central mechanical shutter was designed with a wide range of exposure time controls to ensure uniform detector exposure and proper image overlap. The static resolution of the camera in the ground and aerial imaging tests meets the requirements of the CCD characteristic frequency. A clear aerial color image is obtained, indicating that the technical performance of the camera meets the requirements. The camera technology has been applied to the remote sensing census of land and resources.