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采用瑞奇-康芒实验装置和利用圆Zernike多项式分别对不同遮拦比环域进行了拟合。结果表明,在遮拦比小于0.4的环域上,用圆Zernike多项式拟合,残差PV和残差RMS值不是很大;在遮拦比大于0.4的环域上,需用环Zernike多项式拟合才能保证一定的拟合精度。
The Ricky-Conmont experimental setup and the circular Zernike polynomial were used to fit the different obscuration ratios. The results show that the residual PV and the residual RMS value are not very large when the obscuration ratio is less than 0.4, and the fitting of the circular Zernike polynomial can be done by using the ring Zernike polynomial fitting when the obscuration ratio is larger than 0.4 To ensure a certain degree of accuracy.