Quasi-continuous time-stretched photon Doppler velocimetry

Lv, Linjie; Yang, Yongjun; Wu, Tong; Han, Jianhua; Ma, Pengmou; Chen, Xiangmiao; Khan, Abdul Qayyum

doi:10.3389/fphy.2022.1037231

Cited by 2 publications

(2 citation statements)

References 15 publications

(6 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Photon Doppler velocimetry technology is widely used in high-speed measurements and has the huge advantages of high accuracy, short time, and high resolution [14][15]. In order to further broaden the application scope of photon Doppler velocimetry technology, this paper takes multiplexed photon Doppler 3D velocimetry technology as the research goal.…”

Section: Introductionmentioning

confidence: 99%

Research on three-dimensional velocimetry technology based on multiplexed photon Doppler

Sun,

Wu,

Wang

et al. 2024

Speckle 2023: VIII International Conference on Speckle Metrology

View full text Add to dashboard Cite

Based on the photon Doppler velocimetry technology, this paper studies high-speed targets' three-dimensional (3D) velocimetry technology, reproduces the movement trajectory of high-speed targets through 3D coordinates and broadens the photon Doppler velocimetry technology application scope. First, design the multiplexed photonic Doppler velocimetry optical path structure and analyze the multiplexed photonic Doppler velocimetry principle. Then, the target 3D velocity extraction method is studied, including the fiber optic probe's spatial arrangement and the calculated method of target motion trajectory. Finally, the detection sensitivity of velocity in the direction of the 3D coordinate axis is analyzed. In order to verify the reliability of 3D velocimetry technology, the paper is described in two parts: software simulation and experiment. MATLAB is used to simulate the principle of 3D velocimetry technology. The simulation results show that 3D velocimetry technology can be realized by processing Doppler frequency shift voltage signals. In the experimental part, the high-speed target is detected through fixed-angle optical fiber probes, and four sets of Doppler frequency shift voltage signals are collected. After data processing, the target's 3D velocity is extracted, and the target's motion trajectory is reproduced. Therefore, this paper provides an idea for reproducing the target's motion trajectory by obtaining the high-speed target's 3D velocity.

show abstract

Section: Introductionmentioning

confidence: 99%

Research on three-dimensional velocimetry technology based on multiplexed photon Doppler

Sun,

Wu,

Wang

et al. 2024

Speckle 2023: VIII International Conference on Speckle Metrology

View full text Add to dashboard Cite

show abstract

“…In the engineering experiments, we found that the photonic Doppler signal and highfrequency noise were collected together, and it was not easy to filter out accurately. 17 Many conventional noise filtering methods cannot completely remove the interference of highfrequency noise, even changing the signal frequency amplitude, such as wavelet filtering, moving average filtering, autocorrelation filtering, etc. Single spectrum correction technology cannot effectively correct the spectrum of high-frequency noise interference, so the corrected spectrum error is still significant.…”

Section: Introductionmentioning

confidence: 99%

Beat frequency extraction method of high speed and high noise Doppler signal based on double correction

Sun

Wang

et al. 2023

Opt. Eng.

View full text Add to dashboard Cite

When detecting ultrahigh speed micro targets, because the photon Doppler signal will be seriously interfered with by high-frequency noise, it is difficult to accurately extract the beat frequency information, resulting in serious speed demodulation error. Therefore, we propose a beat frequency extraction method for high-speed and high-noise Doppler signals based on double correction, which can accurately correct the beat frequency signals of high-frequency noise interference. First, the ratio correction method is used for the first spectrum correction to screen out the normalized spectrum of high-frequency noise interference; then, according to the degree of noise interference, the energy barycenter correction method or linear interpolation method is used for the second spectrum correction. Numerical simulation results show that this method can reduce the spectral error by 1.6% to 2.1%. We used this method to process the Doppler signal from the detonation small flyer experiment in Initiating explosive device testing.The results show that it can reduce the beat frequency error by 1.83 times at most under highfrequency noise interfered, equivalent to the instantaneous velocity error of 1955 m/s can be decreased after velocity demodulation. Therefore, the beat frequency extraction method based on double correction has good noise resistance and reliability. We corrected the different regions' frequency spectrums according to the noise interference intensity, which provides an idea for the beat frequency extraction of high-speed and high-noise Doppler signals.

show abstract

Quasi-continuous time-stretched photon Doppler velocimetry

Cited by 2 publications

References 15 publications

Research on three-dimensional velocimetry technology based on multiplexed photon Doppler

Research on three-dimensional velocimetry technology based on multiplexed photon Doppler

Beat frequency extraction method of high speed and high noise Doppler signal based on double correction

Contact Info

Product

Resources

About