photospheric facula[天] 光球层光斑;光斑
irregular facula非均匀光斑
solar facula太阳光斑
Diffract Facula衍射光斑
Facula Area光斑面积
chromospheric facula色球光斑
facula center光斑中心
Shikoku Facula四国
As a kind of laser-positioning system, the system collects the facula image by CMOS Image Sensor. And the precise position of the facula can be worked out with center of gravity method.
作为一种激光定位系统，该系统采用光斑定位技术，以CMOS图像传感器作为光斑定位器件并用重心法求光斑位置。
参考来源 - 嵌入式实时激光定位系统的研究N（名词） any of the bright areas on the sun's surface, usually appearing just before a sunspot and subject to the same 11-year cycle (太阳表面)光斑