This paper describes the design and realization of the azimuth preprocess in the real-time imaging processor of SAR with programmable logic device by the method of sub-aperture using band-pass filter.

该文讨论了在合成孔径雷达实时成像处理器中，采用子孔径带通滤波成像处理方法的方位预处理的设计，构造了一种用大规模可编程逻辑器件实现方位预处理的电路结构。

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Optical head is the core device of the optical disk drive. The aperture matching is the most important problems of optical head design.

光学头是光盘存储器的核心部件，光学头光束孔径匹配是光学头设计的一个至关重要的问题。

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It has been proved that the device satisfies all requirements of the large aperture infrared opto-electric system by experiments.

实验表明，能满足大口径红外光电系统的定标要求。

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Alas, in spite of having an F2.2 aperture on the N9, Nokia hasn't managed to replicate the heroics of its earlier device: the N8 shows its advantage in consistently picking out better color balance and in also being sharper throughout the frame.

ENGADGET: Nokia N9 camera: sample images and video Hands-on