分析了数字水准仪系统的误差源，阐述了仪器i角误差和综合精度的检定方法。
In this paper, errors of digital levels are introduced. Calibration methods of the collimation error and the system accuracy are presented.
对在不同射角下符合时，由射表误差源造成的射程误差和偏流误差进行了计算与分析，论述了符合射角选择的合理区域。
The range error and drift error are calculated and analysed when the fitting is performed on different firing angle, so that a reasonable fitting region is chosen to decide the firing angle.
详细分析了动态干涉系统误差，指出偏振片组的方位角误差和干涉图的空间一致性匹配误差为实验系统的主要误差源。
Error analysis shows that the azimuthal error of the polarizers array and the spatial coincidence error of interferograms are the main error sources.
详细分析了动态干涉系统误差，指出偏振片组的方位角误差和干涉图的空间一致性匹配误差为实验系统的主要误差源。
Error analysis shows that the azimuthal error of the polarizers array and the spatial coincidence error of interferograms are the main error sources.
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