%0 Journal Article
%A HU Yan-zhu
%A LI Lei-yuan
%A WANG Song
%T Feature Extraction Research in Signal Process with Phi-OTDR Technology
%D 2017
%R 10.13190/j.jbupt.2017-030
%J Journal of Beijing University of Posts and Telecommunications
%P 109-114
%V 40
%N 6
%X In the phase-sensitive optical time domain reflectometer (Phi-OTDR), noise-signal ratio on time axis and effective range on length axis are two important factors. Reservation of signal characteristics and rapid processing in time domain are also two important conditions. To optimize these factors and conditions, the signal by signal-noise classification, signal reservation and noise reduction was processed. In signal-noise classification, the time encode signal processing algorithm was improved for coding and extract feature of distributed vibration signal in time domain. The signal range on the length axis and the signal-to-noise ratio of each point on the time axis can be improved. At the same time, the calculation speed is also improved.
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2017-030