This thesis adopted single scanning algorithm which is of constant. Because the measurement time is transient, this kind of method is very suitable for high speed measurement on line.

由于本论文采用的单趟的扫描算法是一个常量级的算法，使得检测时间短暂，所以这种方法非常适合在线的高速检测。

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The results show that a certain extent, the other parameters constant, increasing power, increasing scanning speed, small grains become more dense;

结果表明：在一定范围内，其它工艺参数不变，增加功率，增大扫描速度，晶粒更趋致密细小；

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With the method of dynamic focus, the focus point can be located in the coherence gate during the whole depth scanning. So, the lateral resolution keeps constant.

采用了动态聚焦的方法，能使整个扫描过程中，焦点一直落在相干门内，保证横向分辨率是不变的。

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