彩色大面阵数字航空遥感相机技术的研究  

Study on area scan color CCD for digital aerial remote sensing camera

作　　者：惠守文[1] 刘立国[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《激光与红外》2012年第3期296-300,共5页Laser & Infrared

基　　金：国家"863"高技术研究发展计划项目(No.2007AA701203)资助

摘　　要：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。This paper describes an aerial digital camera with large format of view using Area Scan color CCD as imaging medium. Large field and low distortion of optical lens is emphatically studied. The symmetrical Russar optical system not only ensures a wide field of view, but also reduces the distortion mostly. In order to improve imaging resolution and imaging quality of aerial photography image, a forward imaging moving compensation device has been designed to provide microscopic operations. To adapt to illumination change and obtain appropriate image overlap. It is adopted a twoblade mechanical central shutter which can fit for wide exposure range while ensuring the homogeneity of the detector exposure. According to the imaging test on ground and in flight, the camera＇s static resolution reaches the CCD＇ s characteristic frequency. Obtaining clear color images in aerial tests proves that the camera＇s technical parameters can meet the requirements. Currently the camera is being used in remote sensing survey in our country.

关 键 词：彩色大面阵CCD 光学系统 中心式快门 像移补偿 

分 类 号：V216.8[航空宇航科学与技术—航空宇航推进理论与工程]