CAJ | 학술논문

对地观测载荷大多工作在颤振环境之中，这种颤振造成光轴偏移、像面抖动，由此产生的运动模糊对高分辨率成像与高精度探测产生了极为不利的影响。对空间相机像面去模糊的工作，大致分为两种方案：一种为硬件实时探测加硬件实时补偿，另一种为硬件实时探测加事后软件补偿。文章提出通过主成像相机的双成像模式获得低信噪比无抖动图像和正常信噪比模糊图像，利用图像处理手段从这一对图像中求得抖动信息（模糊核），并以此为先验知识指导模糊图像的复原，抑制像面抖动。这种方法既不需要补偿器件，也不需要探测元件和探测支路，并在图像迭代处理过程中不断修正模糊核，在初始模糊核有一定误差的情况下，同样可望取得良好的像面去模糊效果，对于遥感图像像质提高具有潜在的应用价值。
대지관측재하대다공작재전진배경지중，저충전진조성광축편이、상면두동，유차산생적운동모호대고분변솔성상여고정도탐측산생료겁위불리적영향。대공간상궤상면거모호적공작，대치분위량충방안：일충위경건실시탐측가경건실시보상，령일충위경건실시탐측가사후연건보상。문장제출통과주성상상궤적쌍성상모식획득저신조비무두동도상화정상신조비모호도상，이용도상처리수단종저일대도상중구득두동신식（모호핵），병이차위선험지식지도모호도상적복원，억제상면두동。저충방법기불수요보상기건，야불수요탐측원건화탐측지로，병재도상질대처리과정중불단수정모호핵，재초시모호핵유일정오차적정황하，동양가망취득량호적상면거모호효과，대우요감도상상질제고구유잠재적응용개치。
Most space optical imaging systems work in vibration environment, so optical axis motion and image plane jitter caused by the vibration result in motion blur of image, which is a serious impediment to high resolution imaging and high precision detection. Image deblur of space camera has two schemes to achieve mo-tion blur suppression:the first is combination of real-time hardware detection and real-time hardware compen-sation, and the second is combination of real-time hardware detection and software restoration compensation. The paper proposes a dual mode imaging of space camera to obtain two images:the first image is an inadequate exposure motion blur-free image and the second image is a precise exposure blurred image. Using image proc-essing tools, we can obtain motion path during exposure (blur kernel) from the two images, and restore the sharp image with the blur kernel as a priori knowledge. This method does not require compensation devices, detection devices and auxiliary detection optical path, and can automatically revise blur kernel during iterative processing. The method can be easily applied in the current space camera for remote sensing and has potential application value to improve remote sensing image quality.