与叠栅条纹在传统测量领域中的处理方法不同，提出了求叠栅条纹宽度的两种方法：拟合斜率法和距离平均法。
Different from moire fringes processing methods in traditional measurement fields, two new methods were advanced to get moire fringes width, fit-slope method and distance-mean method.
在国内外普遍使用的细栅距幅光栅叠栅条纹系统中，衍射效应是很明显的，这是造成叠栅条纹信号的衬比（度）和正弦性不好的主要原因。
In an amplitude grating system of small grid pitch, the diffractive light is the main cause to deteriorate the contrast and sinusoidal property of Moiré signals.
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