激光主動(dòng)干涉條紋間距識(shí)別光學(xué)目標(biāo)口徑
[Abstract]:Based on the knowledge of physical optics, Collins diffraction integral formula and complex Gaussian function decomposition method of hard edge diaphragm, the analytical expression of the relationship between interference pattern stripe spacing and time distribution of reflected light in optical target is derived. The quantitative relationship between the stripe spacing of the interference field, the aperture parameters of the optical target and the peak number of the envelope of the reflected light time distribution, the peak spacing and the peak-to-peak ratio are studied from the aspects of principle analysis, simulation calculation and experimental study. The results show that when the spacing of stripes is about the aperture size of the target, the number of peaks in the envelope of reflected light time distribution changes from single peak to multi-peak, and the peak spacing and peak-to-peak ratio curve will appear maximum. According to this variation law, the aperture parameters of optical target can be estimated, and the estimation accuracy is affected by the adjustable range of stripe spacing.
【作者單位】: 裝備學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(No.61302183)資助~~
【分類(lèi)號(hào)】:TN249
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