Application of Improved Demodulation Methods Based on Phase-Generated Carrier in Laser Heterodyne Speech System

Xiubao Hua; Rongzhu Zhang

doi:10.3788/AOS202242.1607001

[1] Yao X. Study on vibration detecting technology of laser Doppler[D](2004).

[2] Li L Y. Optical system of vibration measurement by laser Doppler[D](2010).

[3] He W G, Wang B T, Yang C P et al. Noisy Doppler signal processing for homodyne laser vibrometer system[J]. Journal of Optoelectronics·Laser, 22, 1842-1846(2011).

[4] Bo L H, Liao Y B, Zhang M et al. The improvement on PGC demodulation method based on optical fiber interferometer sensors[J]. Acta Photonica Sinica, 34, 1324-1327(2005).

[5] Lang J P, Chang T Y, Chen J D et al. Improved phase generated carrier modulation and demodulation method[J]. Acta Photonica Sinica, 45, 1207004(2016).

[6] Yan C H, Wang T F, Zhang H Y et al. Arctangent compensation algorithm of laser speech detection system[J]. Infrared and Laser Engineering, 46, 0906004(2017).

[7] Zhang Q, Zhang J Y, Zeng H L et al. Acoustic signal detection system using PGC demodulation algorithm and laser Doppler effect[J]. Infrared and Laser Engineering, 40, 1115-1118(2011).

[8] Gu X B, Feng G Y, Liu J. Application of adaptive filtering algorithm in the weak vibration measurement[J]. Infrared and Laser Engineering, 45, 0417003(2016).

[9] Sun W, Yu M, Chang T Y et al. Research and improvement based on PGC demodulation method[J]. Acta Photonica Sinica, 47, 0806004(2018).

[10] Yan L P, Zhou C Y, Xie J D et al. Nonlinear error compensation method for PGC demodulation based on Kalman filtering[J]. Chinese Journal of Lasers, 47, 0904002(2020).

[11] Ran Y L, Ni J L, Fu R Q et al. Improved PGC demodulation algorithm based on optical fiber laser hydrophone[J]. Journal of Applied Optics, 41, 421-427(2020).

[12] Li S W, Shao S Y, Mei H P et al. Interference phase generated carrier demodulation algorithm based on synchronous carrier restoration method[J]. Chinese Journal of Lasers, 43, 1204004(2016).

[13] Wu Y, Zhang R Z. Application of wavelet threshold denoising algorithm in photodetector signal processing[J]. Acta Photonica Sinica, 48, 1004004(2019).

[14] Shang F, Qi Y, Ma L N et al. Background phase noise of interferometric TDM sensing array based on fiber Bragg grating[J]. Acta Optica Sinica, 41, 1306011(2021).