Intensity of Gaussian distribution impacts significantly the sensing signal of the defocus phase, in which the error percentage achieves 25%, but for other phase profile, the effect is ignorable.

光强高斯分布对散焦相差的曲率信号影响较大，信号百分比误差达到25%，对其他相差的曲率信号影响很小；

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The results showed that the content of nitrogen in Al matrix presented gaussian-like distribution, in good agreement with AES depth profile.

模拟结果表明：氮在铝基体中呈现高斯分布，与AES的分析结果基本吻合。

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