[1] M. K. Barnoski,S. M. Jensen. Fiber waveguides:a novel technique for investigating attenuation characteristics[J]. Appl. Opt.,1976,15(9):2112-2115

[2] T. R. Parker,M. Farhadiroushan,V. A. Handerek et al.. A fully distributed simultaneous strain and temperature sensor using spontaneous brillouin backscatter[J]. IEEE Photon. Technol. Lett.,1997,9(7):979-981

[3] P. R. Hoffman,M. G. Kuzyk. Position determination of an acoustic burst along a Sagnac interferometer[J]. J. Lightwave Technol.,2004,22(2):494-498

[4] S. J. Russell,K. R. C. Brady,J. P. Dakin. Real-time location of multiple time-varying strain perturbations,acting over a 40-km fiber section,using a novel dual-Sagnac interferometer[J]. J. LightwaveTechnol.,2001,19(2):205-213

[5] Ma Bin,Xu Jian,Sui Qingmei. Experimental study on coupling high-frequency fiber-optic vibration sensor[J]. Acta Optica Sinica,2009,29(5):1177-1182

[6] Sun Guoxin,Zhou Kejiang. Virtual optical-fiber Sagnac interferometer and analog-digital mixed demodulation system[J]. Acta Optica Sinica,2009,29(1):213-218

[7] Z. Zhang,X. Bao. Distributed optical fiber vibration sensor based on spectrum analysis of polarization-OTDR system[J].Opt. Express,2008,16(14):10240-10247

[8] S. C. Huang,W. W. Lin,M. T. Tsai et al.. Fiber optic in-line distributed sensor for detection and localization of the pipeline leaks[J]. Sens. Actuators A,2007,135(2):570-579

[9] Hang Lijun,He Cunfu,Wu Bin et al.. Research on novel distributed optical fiber pipeline leakage detection technology and location method[J]. Acta Optica Sinica,2008,28(1):123-127

[10] H. C. So. Noisy input-output system identification approach for time delay estimation[J]. Signal Processing,2002,82(10):1471-1475

[11] Qiu Tianshuang. Communication Adaptive Signal Processing[M].Beijing:Electronic Industry Press,2005. 208-209

[12] F. A. Reed,P. L. Feintuch,N. J. Bershad. Time delay estimation using the LMS adaptive filter-static behaviour[J]. IEEE Trans. Acoust.,Speech and Signal Processing,1981,29(3):561-571