Performance analysis of filtering algorithms based on Fourier transform;

Transient harmonic analysis algorithm using wavelet transform and Fourier transform;

A palmprint recognition system using two-stage match method based on Fourier transform;

A Study on Fourier Transformation Demodulating Theory of the Gap of Optical Fiber Fabry-Perot Sensor;

A three-dimensional Fourier transformation migration method of magnetotelluric data and its application;

The principle for harmonic detecting and analyzing based on Fourier transformation was focused on.

FFT-based orientation identification algorithm in fira;

The resulting binary image was transformed using FFT method.

The proposed method overcomes the shortcomings of FFT-based method such as sensitivity to noise and inaccurate performance in non-stationary environments.

In accordance with the settlement observation of the Second nanjing Yangtse River bridge Ba-gua continent s roadbed,the collocations of the observation point and technology terms of the ob-servation are gieven,the statistic analysis and the Fourier transforms are studied as well in processing the final data.

The Fresnel diffraction formula and the Fourier transforms are used to get the intensity distribution formula.