【作者】 万敏； 苏毅； 杨锐； 郑捷； 冷杰； 郑为民； 胡晓阳；

【Author】 WAN Min;SU Yi;YANG Rui;ZHENG Jie;LENG Jie;ZHENG Wei-min;HU Xiao-yang Institute of Applied Electronics, CAEP.P.O.Box 919-1012, Mianyang 621900, China

【机构】 中国工程物理研究院应用电子学研究所；

【摘要】 为提高对天体目标的检测概率,对多种可提高探测器检测概率的途径进行了研究。研究结果表明:光谱滤波技术能有效提高信噪比。为得到大的探测对比度和信噪比,需合理选取探测系统机场,应保证目标像所占像素个数不小于2×2;还应令系统在不加衰减器的情况下.电荷耦合器件(CCD)接近饱和并保证CCD不饱和。结合探测系统视场的选取,利用形态学方法对图像进行处理,将大大提高探测信噪比.从而大大提高检测概率。更多还原

【Abstract】 Detection for a faint astronomical object in daytime is an extremely complex issue because of low target-back-ground-contrast and low signal-to-noise ratio. Some ways to improve the detection probability is studied in this paper. The resultsshow, spectral filtering technology is an effective way to improve signal-to-noise ratio. The reasonable choice of field of view ishelpful to get higher signal-to-noise ratio and contrast. With the reasonable choice of field of view and the effective application ofmorphology-based detection algorithm, the detection efficiency could be greatly improved.更多还原