Research on aircraft platform environment data preprocessing process

The preprocessing of aircraft random vibration samples is critical to the formulation of environmental test conditions. This paper briefly reviews the phenomenon of singularity and trend term in random vibration sample data firstly. This paper describes the software system we developed and introduces the data storage and acquisition process based on Hadoop in detail secondly. Then the paper We summarize the relevant algorithms for identifying data outliers, including MATLAB-based visual inspection of data, probability density curves, narrowband spectral density curves, and algorithms for removing outliers, including least squares, intermittent noise outlier removal, IIR. Finally, the paper points out that data analysis process to generate spectrum, data conclude process, test conditions are for future research work.