摘要
在长时间的天文光电观测系统中,为降低运行成本,往往拆除机械快门。但对于天文全帧CCD相机而言,其由此产生的拖尾严重影响了目标的检测性能。本文首先根据全帧CCD的工作机理,从理论上分析了CCD图像拖尾产生的原因。结合实际工程对空间目标检测的实时性需求,提出一种快速而有效地去除恒星目标竖直拖尾和空间目标倾斜拖尾的方法。最后结合实测数据和硬件平台,验证了该方法的有效性及实时性。
In the long time astronomical opto-electronic observation system,the mechanical shutter will often be removed to decrease the operating cost.But under this circumstance the influence of smear noise on target detection is much serious in full-frame CCD.Based on the mechanism of full frame CCD smear,the cause of forming smear is analyzed theoretically.Combining with the actual engineering demand of detecting space targets,it puts forward a method of removing vertical smear of stellar targets and gradient smear of space targets.Finally the efficiency and real-time performance are proved with the measured image data and hardware platform.
出处
《信号处理》
CSCD
北大核心
2010年第4期607-611,共5页
Journal of Signal Processing
