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光学—计算机混合系统中的前半部分为傅里叶光学变换过程;其后是通过楔环探测器采集谱面上的光强信号,经电子系统送入计算机处理。在对卫星、航测底片及数字照片的频谱分析中,由于空间带宽不同,因此文中给出了两种不同的光路设计,使空间带宽分别控制在25线/mm 和60线/mm。此外,根据计算机输出显示的数据和图象可以定性判断原片的很多特性。
Optical - computer hybrid system for the first half of the Fourier optical transform process; followed by the wedge ring detector to capture the spectrum of light intensity signal, the electronic system into the computer processing. In the spectrum analysis of satellites, aerial photographs and digital photos, two different optical path designs are given in this paper because of the different spatial bandwidths, and the space bandwidths are controlled respectively at 25 lines / mm and 60 lines / mm. In addition, many features of the original film can be qualitatively judged based on the data and images displayed by the computer.