S-150 型高速分幅相机中的图像旋转和时空信息率THE TURNING OF .PDFVIP

CNIC-01671 CAEP-0133 ＳＳ-150 型高速分幅相机中的图像旋转和时空信息率 ＳＳ THE TURNING OF THE IMAGES AND TEMPORAL-SPATIAL INFORMATION RATE IN MODEL S-150 HIGH SPEED FRAMING CAMERA (In Chinese) 中 国 核 情 报 中 心 China Nuclear Information Centre 161 CNIC-01671 CAEP-0133 Ｓ-150 型高速分幅相机中的 图像旋转和时空信息率 谭显祥 ( 中国工程物理研究院流体物理研究所, 绵阳, 621900) 摘 要 S-150 型高速分幅相机是一种等待型转镜式相机。它的摄影频 4 6 率从3 ×10 至1.5×10 幅/s ，每幅图像尺寸为14 mm×20 mm ，总 共 110 幅图像，均匀地分布在相机的两个成像区。由于每路光学成 像系统中，都由多个反射镜折转光路，致使两成像区中的图像方向 各不相同。图像的空间方向相互旋转 180°，仅仅时间方向仍保持 一致。考虑到相机像面上图像的占空比（即重视图像总数和图像宽 度），计算了该相机的时空信息率，其值为9.5 ×1011 pixels/s 。 关键词：高速光学技术 转镜分幅相机 时空信息率 162 The Turning of the Images and Temporal-spatial Information Rate in Model S-150 High Speed Framing Camera (In Chinese) TAN Xianxiang (Institute of Fluid Physics, CAEP, Mianyang, 621900) ABSTRACT Model S-150 high speed framing camera is a continuous access rotating mirror 4 6 camera. It has a frame rate from 3 ×10 to 1.5 ×10 frames/s. Frame size is 14 mm ×20 mm. Total number of frames is 110. All images are equally separated into two imaging parts. Because the optical imaging system for each part has multiple mirrors, the images direction in two parts are not the same each other. The spatial direction on the two parts is of opposite change. Time direction, that is scanning direction, is only the same. Taking account of the image to blank ratio on the imaging surface