Compact rectangular aperture configuration structure and sampling method of target space frequency
A rectangular aperture, compact technology, applied in the field of photoelectric detection, can solve the problems of redundancy, lack of zero-frequency sampling, lack of sampling of the radiance of the object under test, etc., and achieve the effect of tight aperture arrangement and effective use of space
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[0050] To design a "spider web" detection and imaging system for a certain application requirement, when using such image 3 For the gear-shaped arrangement shown, the system parameters are shown in the table below. The system includes 37×12×2=888 lenses. There is a large redundancy in the low-frequency part of the imaging system, and the spatial frequency sampling is discontinuous within a certain range, such as Figure 4 shown. The system is Image 6 The simulation original image shown is coherently sampled, and then the image effect inverted by inverse Fourier transform is as follows: Figure 7 shown.
[0051] Table 1: Gear-shaped arrangement "spider web" detection and imaging system
[0052]
[0053]
[0054] The "spider web" detection and imaging system with basically the same logarithm of the aperture as the above-mentioned system adopts figure 1 In the rectangular arrangement shown, the system parameters are shown in the table below. The system includes 29×29...
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