模拟研究结果表明，相位差法可以较准确的恢复出波前相位，并且最优化的离焦波面差为一个波长。

Simulation results show phase-diversity method can accurately retrieve the wavefront and defocusing of one wavelength is optimal.

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由于相位差异法的运算量巨大，在PC平台上的软件实现难以实时、快速的恢复图像。

Due to the great computations, it is difficult to increase the speed of PD to satisfy real time application on PC platform.

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