Measurement of the velocities in the transient acceleration process using all-fiber photonic Doppler velocimetry

Jian Wang; Chong-qing Wu; Hong-wei Song; Tao Yu; Jing-jing Xu

doi:10.1117/12.886469

17 May 2011 Measurement of the velocities in the transient acceleration process using all-fiber photonic Doppler velocimetry

Jian Wang, Chong-qing Wu, Hong-wei Song, Tao Yu, Jing-jing Xu

Author Affiliations +

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77536F (2011) https://doi.org/10.1117/12.886469
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

Based on analysis of basic photonic Doppler velocimetry (PDV), a formula to measure velocity variation in a single cycle is put forward. PDV has been improved in three aspects, namely, the laser, the detector and the data processing. A measurement system for velocity of the initial stage of a shock motion has been demonstrated. Instantaneous velocity measurements have been performed. The experimental results have a good agreement with the values obtained from the accelerometer. Compared with the traditional fringe method, the proposed method in this paper can identify instantaneous velocity variation. So it is particularly suitable for measuring the velocity in the transient acceleration process of shock waves and detonation waves.

Citation Download Citation

Jian Wang, Chong-qing Wu, Hong-wei Song, Tao Yu, and Jing-jing Xu "Measurement of the velocities in the transient acceleration process using all-fiber photonic Doppler velocimetry", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77536F (17 May 2011); https://doi.org/10.1117/12.886469

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