Outliers detecting of dam observation data is a basic work for dam observation data analysis.

观测精度历来是大坝观测中最需要关注的要素之一。

youdao

This "unusual" phenomenon has become one of the confusing problems in dam observation data analysis.

这一“反常”现象，已成为大坝观测资料分析中最令人困惑的问题之一。

youdao

Further more, in view of periodical character of dam observation data, a frequency spectrum analysis method for data treatment is suggested.

针对大坝观测资料周期性较强的特点，首次提出了频谱回归及分析法。

youdao