评估云层对观测设备威胁等级的光电测量系统

采用大视场光学设计及非制冷红外焦平面阵列探测器采集天空背景,对图像进行伪彩处理、图像修复等操作,获得天空伪彩云层图像,并根据标定的空间角位置与像素间的函数关系,计算出云的分布位置信息;通过分析云层的浓厚程度、面积信息,判断其对观测设备的威胁程度。实验表明,该测量系统能以0.5 Hz的频率输出高度角15°以上天区的云图,云层的方位角定位精度为1.5°,仰角精度是0.9°,并可实时评估云层对观测设备的威胁程度。此系统可实现云层分布的测量定位,提高光电观测设备的使用效率。

A System for Evaluation of Threat Grade of Cloud to Photoelectric Observation

With large field of view design,an uncooled infrared focal plane array detector and image grabber collect sky background.Then,the system performs pseudo-color and bracket removal operations and so on to get a pseudo-color image,and computes the position information of interesting points based on a pre-established function between calibrated position in the sky and pixels in the image.Finally,cloud thickness and area information are used to determine the threat grade of the cloud to observation equipment.Exp...