我们很难发现这类天体，更不用说用光学望远镜研究它们了。
We have trouble discovering those sorts of bodies, much less studying them using just optical telescopes.
研究了空间飞行器向小天体着陆阶段基于导航相机和激光测距仪的自主光学导航方案。
An autonomous optical navigation scheme for landing of spacecraft on a small celestial body based on navigation camera and laser range finder measurements was studied.
利用光学导航相机以及星敏感器，通过测量星光信息以及天体边缘的信息，进行了自主光学导航方案的设计。
An autonomous optical navigation scheme was designed using the star light data and body edge data which is measured by star sensor and optical navigation camera.
巨大的反射望远镜的反射镜以光学聚集来自天体的光，转往两部相机和两部摄谱仪。
The reflector telescope's mirror optics gather light from celestial objects and direct it to an array of cameras and spectrographs.
利用小天体探测任务中拍摄的图像，不但能够较为直观地得到目标天体的形状结构及地表特征，而且可以对探测器进行自主光学导航。
The images taken in the exploration mission can provide small body shape and terrain surface directly as well as the navigation information of the spacecraft.
利用小天体探测任务中拍摄的图像，不但能够较为直观地得到目标天体的形状结构及地表特征，而且可以对探测器进行自主光学导航。
The images taken in the exploration mission can provide small body shape and terrain surface directly as well as the navigation information of the spacecraft.
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