Power spectrum fit analysis for railway track irregularities

The contrast between domestic and overseas power spectrum is presented in brief. The analysis method of power spectrum and its fitting method are introduced in detail in this paper. First, the necessity of power spectral analysis is illuminated. Second, comparison of different standard spectrums at home and abroad is carried out. Then, the basic algorithm for power spectrum, especially for fitting spectrum is illustrated. Finally, based on the investigation of Shanghai-Hangzhou Line, the fitted power spectrum is transformed from real data with this software, and then comparison is made between this fitted power spectrum and the existing power spectrums.