repetition measurement

Pearl River Huangpu Bridge Construction Horizontal Control Network Repetition Measurement and Stable Analysis

珠江黄埔大桥施工平面控制网复测与稳定性分析

Re-sults: In the three measurements, the peak measurement method had the highest reliability, the best repetition, the least sensitivity to noise, and not to be influenced by threshold setting up.

结果：三种测量方法中，以最大值法的可靠性最高，重复性最好，对噪声的敏感性小，且不受阈值设置的影响。

Through field test, the reliability of metal material separation is affirmed by sclerometer testing repetition measurement. Moreover, ejection experiments are made in shooting range.

通过现场试验，以硬度计检测复检确认了金属材料分选仪的可靠性，并进行靶场退壳试验。

The basic characteristics of the six GPS repetition measurement data in Shanxi rift valley zone from 1996 to 2001 present trending activity, showing the characteristic of differentia activity in anticlockwise as a whole, with the north segment moving towards west and the south segment moving towards east.

1996年至2001年山西裂谷带6期GPS复测资料的基本特征为趋势性活动，表现为北段向西运动，南段向东运动，整体呈逆时针的差异活动性质；