Brillouin frequency shift extraction method for fusion use of BOTDR and BOTDA

According to the Brillouin frequency shift extraction method for fusion use of the BOTDR and the BOTDA, the BOTDR technology and the BOTDA technology are comprehensively used, rapid and accurate extraction of the Brillouin frequency shift of the BOTDA is achieved, the efficiency and the utilization rate of collected data are improved, and on the basis that a BOTDR system is used for measuring the center frequency of anti-Stokes light, in a BOTDA system, frequency sweeping is carried out from the center frequency of anti-Stokes light to the two ends according to the step length set in an algorithm, Brillouin gains of corresponding frequency points are obtained, a Brillouin gain spectrum is drawn, a curve is fitted through a Lorentz fitting model, the center frequency of the fitted curve is extracted, and therefore Brillouin frequency shift is extracted, therefore, sensing of corresponding physical quantities is realized. 本发明提供了一种BOTDR和BOTDA融合使用的布里渊频移的提取方法，综合使用BOTDR和BOTDA技术，实现对BOTDA布里渊频移的快速、精准提取，提高采集数据的效率和利用率，在