Firstly,the Hanning-windowed FFT algorithm processes the sampled signal.

Information Retrieval Algorithm Based on Improved Hanning Window;

An explicit specturum correction approach is proposed to short records weighted by a Hanning window.

Hanning windowed interpolation harmonic analysis algorithm and high-order sine fitting algorithm are the two effective algorithms for dielectric loss angle measurement.

The error of dielectric loss angle measurement caused by asynchronous sampling can be reduced by Hanning windowing interpolation algorithm based on FFT, which is a very promising algorithm with the merits of easy realization and fast calculation.

An improvement harmonic analysis method based on hanning windowing is proposed to loss angle measurement device based on DSP.

In this paper, the principle of model high-resolution OTDR is described, the design is analyzed, and the main techniquesis discussed, the research using digital_ control accurate delay fororderly sample synthesis and Using window sample technology is introduced.