Grid algorithm is a preferable star field identification algorithm. But it need many stars in FOV (field of view). Thereby CCD star tracker must have large FOV or be sensitive to dim stars.

栅格算法是一种较优秀的星图识别算法，但它要求视场中有较多的恒星，从而要求星跟踪器有大的视场或高的星等灵敏度。

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Optical systems with large FOV are usually complex in design and have large distortion due to such factors as eccentric, field of view, and focal length.

大视场光学系统由于非共轴、视场、焦距等因素的影响，光学设计比较复杂，光学系统的畸变比较大。

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Objective To evaluate the relationship between field of view (FOV) and quality of ct images.

目的探讨扫描野大小与CT图像质量之间关系。

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The sensor's 720p HD video is captured in full field-of-view (FOV) with 2 x 2 binning, which doubles the sensitivity and improves the signal-to-noise ratio (SNR).

ENGADGET: OmniVision unveils 5MP BSI sensor that takes low light cameras further into the entry level