Simultaneous measurements of velocity and distance via a dual-path FMCW lidar system

F Zhang, L Yi, X Qu - Optics communications, 2020 - Elsevier
A practical dual-path Frequency Modulated Continuous Wave (FMCW) lidar system capable
of simultaneous ranging and velocimetry was developed in this work. The setting of dual …

Frequency-scanning interferometry using a time-varying Kalman filter for dynamic tracking measurements

X Jia, Z Liu, L Tao, Z Deng - Optics express, 2017 - opg.optica.org
Frequency scanning interferometry (FSI) with a single external cavity diode laser (ECDL)
and time-invariant Kalman filtering is an effective technique for measuring the distance of a …

Dynamic clearance measurement using fiber-optic frequency-swept and frequency-fixed interferometry

B Shao, W Zhang, P Zhang… - IEEE photonics …, 2020 - ieeexplore.ieee.org
Aiming at the problems of Doppler-induced error and slow measurement rate in frequency-
swept interferometry, a novel dynamic clearance measuring method is proposed. By …

Dynamic absolute distance measurement by frequency sweeping interferometry based Doppler beat frequency tracking model

X Jia, Z Liu, Z Deng, W Deng, Z Wang, Z Zhen - Optics communications, 2019 - Elsevier
We propose a frequency-sweeping interferometry (FSI) with single external cavity diode
laser that can be used to measure the absolute distances of a dynamic target. Generally, the …

Simultaneous measurement of distance and speed via frequency-modulated continuous-wave LIDAR system based on H13C14N gas cell

X Cheng, J Liu, Y Zhang, F Zhang, X Qu - Optics and Lasers in Engineering, 2022 - Elsevier
Traditional frequency-modulated continuous-wave lidar is to measure the distance of the
target through the spectrogram of the beat signal. In this paper, we propose a lidar system to …

FSI-based non-cooperative target absolute distance measurement method using PLL correction for the influence of a nonlinear clock

C Lu, Y Xiang, Y Gan, B Liu, F Chen, X Liu, G Liu - Optics letters, 2018 - opg.optica.org
We propose a frequency swept interferometry (FSI)-based absolute distance measurement
method that can be used to measure a noncooperative target located at a distance of 10s of …

Dynamic cascade-model-based frequency-scanning interferometry for real-time and rapid absolute optical ranging

Z Deng, Z Liu, X Jia, W Deng, X Zhang - Optics express, 2019 - opg.optica.org
A new frequency-scanning interferometry (FSI) scheme using in-phase and quadrature (IQ)
detection for real-time and rapid absolute optical ranging is presented. Dynamic …

Simultaneous time-varying vibration and nonlinearity compensation for one-period triangular-FMCW lidar signal

R Wang, B Wang, M Xiang, C Li, S Wang, C Song - Remote Sensing, 2021 - mdpi.com
Frequency modulation continuous wave (FMCW) Lidar inevitably suffers from vibration and
nonlinear frequency modulation, which influences the ranging and imaging results. In this …

Precision improvement in frequency scanning interferometry based on suppression of the magnification effect

Y Shang, J Lin, L Yang, Y Liu, T Wu, Q Zhou, J Zhu - Optics express, 2020 - opg.optica.org
Frequency scanning interferometry (FSI) is a promising technique for absolute distance
measurement and has been demonstrated in many industrial applications. However, in …

Vibration compensation of the frequency-scanning-interferometry-based absolute ranging system

FM Zhang, YT Li, H Pan, CZ Shi, XH Qu - Applied Sciences, 2019 - mdpi.com
The frequency-scanning-interferometry-based (FSI-based) absolute ranging technology is a
type of ranging technology possessing a high precision and no ranging blind area, so it can …