采用滑动时窗求出多个时移值的平均值，即可消除随机干扰和其它干涉波对地表因素的影响，最终得到纵向一致的静校正值。
To compute the mean of many time shift values by shifting time window can help to eliminate the interference of random and other noises with surface factor, thus lineup statics may be obtained.
本文论述双波长数字波面干涉术的原理及算法，分析该技术的主要误差及其校正方法。
This paper describes the principle of the two-wavelength digital wavefront interferometry and the computational method. The analyses are also given to the main errors and the removing method.
分析了干涉条纹两路光电差分信号的有效范围，提出采用椭圆拟合对差分信号进行拟合、校正与补偿，以进一步提高系统测量精度的方法。
Effective range of detection signal is analyzed and proposes a means of ellipse fit that revises and compensates measurement result to improve measurement precision.
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