Open AccessSimultaneous ranging and velocimetry with multi-tone continuous wave lidar
Author(s) -
Mustafa Mert Bayer,
Rasul Torun,
Xun Li,
J.E. Velazco,
Özdal Boyraz
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.392647
Subject(s) - ranging , lidar , velocimetry , optics , doppler effect , continuous wave , amplitude , detector , remote sensing , acoustics , laser doppler velocimetry , bandwidth (computing) , physics , laser , geology , geodesy , computer science , telecommunications , medicine , blood flow , astronomy
In this paper, we demonstrate analytical modeling and experimental verification of simultaneous ranging and velocimetry measurements in multi-tone continuous wave lidars. To assess the ranging performance of the proposed lidar, a comparative experiment of the multi-tone continuous wave and time-of-flight techniques is performed. The average deviation in ranging is ∼0.75cm with >90% fitting accuracy, which corresponds to the uncertainty of the time-of-flight measurements due to the detector bandwidth. Simultaneous ranging and velocimetry are performed on a moving target. The velocimetry accuracy of the multi-tone continuous wave lidar is dictated by the frequency resolution of the Doppler shift, which is measured as ± 0.8cm/s. The results indicate that multi-tone continuous wave lidars can be improved to perform remote sensing for oceanography and atmospheric sciences and for autonomous vehicles without using any amplitude, frequency or phase sweeping.