摘要
用自建的工程单机对星敏感器用核心器件CCD的电离总剂量效应进行了研究,给出了不同辐照剂量下辐照前后图像灰度、标准差等反映CCD拍摄图像质量的参数变化。研究表明:CCD对电离总剂量效应较敏感,辐照会引起输出图像灰度和标准差变大,导致图像质量下降、信噪比降低,最终影响探测器的成像效果。
The total ionizing dose effects on typical CCD for star sensor was studied by the engineering device set up in this paper. The parameters showing the CCD imaging quality which were image gray value before and after irradiation and the standard deviation under various doses were given out. The study showed that CCD was sensitive to the total dose. The irradiation could cause the image gray value and standard deviation becoming bigger which would cause the image quality degraded, signal noise ratio decreased and affect the image of the sensor at last.
出处
《上海航天》
2013年第5期65-67,72,共4页
Aerospace Shanghai
