Mr. Linjie Lv Profile

Linjie Lv

at Beijing Great Wall Metrology and Testing Technology Research Institute

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Proceedings Article | 31 August 2021 Paper

Simulation of time-stretched photon Doppler velocimetry

Tengfei Wu, Linjie Lv, Jibo Han, Dazhi Zhang, Zhiguo Liang

Proceedings Volume 11907, 119072Z (2021) https://doi.org/10.1117/12.2603239

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The Photon Doppler Velocimetry system is widely used in transient high-speed experiments, due to its advantages of non-contact measurement, low cost, high frequency response and good traceability. When the measured target accelerates from 0 to tens of km/s within a few hundred nanoseconds, its signal frequency can reach tens of GHz, so its dynamic range and time resolution capabilities are greatly challenged. The time-stretched Photon Doppler Velocimetry uses the time-stretched characteristics of pulsed lasers to achieve high-frequency signal scaling, improves the time resolution capability of the Photon Doppler Velocimetry, and breaks the Nyquist limit of analog-to-digital conversion technology. The article completes the experimental verification and system error analysis of the time-stretched Photon Doppler Velocimetry for the simulation study of the time-stretched Photon Doppler scale factor.

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