Its practicality effective aperture ratio has been improved to about92.8% consequently the concentration efficiency of microlens array is increased.
其实测有效孔径比可达到92。8%极大提高了微透镜阵列的聚光效率。
An effective algorithm of feature extraction for spotlight synthetic aperture radar images is presented.
提出一种聚束式合成孔径雷达图像特征提取的有效算法。
The basic factors affecting collimating characteristic are off-axis magnitude, effective aperture and emission position on the focal plane of off-axis parabolic mirror.
影响离轴抛物镜准直特性的主要因素有离轴量，有效孔径和焦面出射点的位置。
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