一阶差分与小波分析的GPS观测数据粗差探测

赫章特大桥超高桥墩在施工过程中，采用GPS对桥墩在施工过程的变形进行了监测。受施工现场环境影响，GPS变形观测数据中存在多种粗差，含有粗差的观测量如果直接参与后续数据分析，将导致分析结果的不正确。本文基于一阶差分法与小波分析法，对赫章特大桥的GPS变形观测数据进行了粗差探测。结果表明，两种方法对粗差探测的结果不完全一致，都不能将粗差全部探测出来，且此两种方法都存在将部分正确值当成粗差观测值的现象。

Gross error detection of GPS observational data based on first order differential and wavelet analysis

GPS deformation monitoring was used on the pier of He-Zhang Bridge in the construction process. For the impact of construction site environments, there are several gross errors; observations contain gross errors in the GPS deformation observation data. The results of the analysis will incorrectly if the data involved in the subsequent data analysis directly. Based on first order differential and wavelet analysis methods, this paper detects the Gross error detection of GPS observational data on the He-Zhang Bridge. The results show that the two methods of gross error detection is not completely consistent, gross errors will not be able to detect all out, and also the two methods are partially made correct values as gross errors of observations.