探月光学

介绍了我国首次绕月探测嫦娥一号卫星的主载荷CCD立体相机与干涉成像光谱仪的原理、设计思想、技术措施与特色、设计结果以及在轨图像质量评估与检测. CCD立体相机采用一个广角物镜加一块面阵CCD的独特技术方案,从而使立体相机具有结构紧凑、小型轻量、配准精度高、航天环境适应性强等优点. 4种曝光时间与4种电子学增益共16组合,可以实现同轨不同纬度的曝光量调整. 干涉成像光谱仪采用了大比尺缩小的图像传递、2×2像元合并、矩形孔径光阑、2种曝光时间与3种电子学增益共6种组合的在轨曝光量调整等技术措施. 在轨运行表明,各项技术措施有效,达到了预期目标.

Lunar Exploration Optics

The basic principle, design scheme, technology measure and characteristic, the design result and imaging evaluation of the CCD stereo camera and the imaging interferometer spectrometer were presented, which are the main loads of the Chang′e-1 satellite used to detect the moon for the first time. The CCD stereo camera consists of a wide-field-view angle lens and a piece of area array CCD, and it is compact in size, light in weight, high in registration accuracy, and strong in adaptability for the space environment. The adjustment of the light exposure in the same orbit according to different latitudes can be achieved by the 16 types of combinations with 4 types of time exposure and 4 types of electronics gains. The techniques, including the large-scale reduced image transmission, the joint of 2 by 2 pixels, rectangle aperture stop, and 6 types of light exposure adjustment techniques with 2 types of light exposure and 3 types of electronics gains, were used in the imaging interferometer spectrometer. The good performance of CCD stereo camera and imaging interferometer spectrometer proves that the technique are effective.