对双随机相位加密过程进行了计算机模拟，并对该技术的误差容限进行了分析与模拟。

Double random phase encryption technique is simulated, its faulty tolerance is also analyzed and results of simulated experiments are given.

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同时，本文还计算出了这几种参数的误差容限，这对体积相位全息光栅的实际制作具有指导作用。

Furthermore, the paper offers the error limited of these parameters and they are good to guide practical fabrication of the volume phase holographic grating.

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同时，本文还计算出了这几种参数的误差容限，这对体积相位全息光栅的实际制作具有指导作用。

Furthermore, the paper offers the error limited of these parameters and they are good to guide practical fabrication of the volume phase holographic grating.

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