激光主动干涉条纹间距识别光学目标口径
发布时间：2019-06-13 12:40
【摘要】：利用物理光学相关知识及Collins衍射积分公式和硬边光阑的复高斯函数分解法,推导得到目标处干涉图样条纹间距与光学目标反射光时间分布关系的解析表达式.从原理分析、仿真计算和实验研究等方面研究了干涉场的条纹间距、光学目标口径参数和反射光时间分布包络的峰峰数、峰峰间距和峰峰比之间定量关系.结果表明,当条纹间距的大小约为目标的口径尺寸时,反射光时间分布包络的峰峰数由单峰向多峰过渡,峰峰间距和峰峰比曲线会出现极大值,根据这一变化规律可以估测出光学目标的口径参数,其估测精度受条纹间距可调节范围的影响.
[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.
【作者单位】： 装备学院;
【基金】：国家自然科学基金(No.61302183)资助~~
【分类号】：TN249
[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.
【作者单位】： 装备学院;
【基金】：国家自然科学基金(No.61302183)资助~~
【分类号】：TN249
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