【摘 要】
：
Aiming at the problem of scanning distortion in X-Y galvanometer light detecting and ranging(Lidar)scanning sys-tem,we propose a method of image scanning distor
【机 构】
：
Key Laboratory of Tunable Laser Technology,Harbin Institute of Technology,Harbin 150001,China
论文部分内容阅读
Aiming at the problem of scanning distortion in X-Y galvanometer light detecting and ranging(Lidar)scanning sys-tem,we propose a method of image scanning distortion correction with controllable driving voltage compensation.Firstly,the geometrical optics vectors model is established to explain the principle of pincushion distortion in the galvanometer scanning system,and the simulation result of scanning trajectory is consistent with experiments.The linear relationship between the driving voltage and the scanning angle of the galvanometer is verified.Secondly,the relationship between the deflection angle of the galvanometer and the scanning trajectory and the driving voltage is deduced respectively,and an im-age scanning correction algorithm with controllable driving voltage compensation is obtained.The simulation experiment results of the proposed method show that the root-mean-square error(RMSE)and the corresponding curve between the scan value and the actual value at different distances,have a good correction effect for the pincushion distortion.Finally,the X-Y galvanometer scanning Lidar system is established to obtain undistorted two-dimensional scanned image and it can be applied to the three-dimensional Lidar scanning system in the actual experiments,which further demonstrates the feasibility and practicability of our method.
其他文献
The effects of Sm doping into CuInTe2 chalcopyrite on the cohesive energy before and after light absorption are systematically investigated by the empirical ele
Epitaxial growth on transition metal surfaces is an effective way to prepare large-area and high-quality graphene.However,the strong interaction between graphen
The ultrafast photoionization dynamics of N2 molecules by x-ray/XUV laser pulses is investigated.The molecu-lar frame photoelectron momentum distributions(MF-PM
This study is to report a ZnSe quantum dot with a large two-photon absorption cross section and good biocom-patibility,which can be used in bioimaging.Fluoresce
Based on the fully relativistic multiconfiguration Dirac-Hartree-Fock(MCDHF)method and the corresponding pro-gram package GRASP2018,a new program for calculatin
We analytically and numerically study the local dynamical characteristics of the Bessel beams reflected from an air-glass interface near the Brewster angle.A Ta
Fresnel incoherent correlation holography(FINCH)is a unique three-dimensional(3D)imaging technique which has the advantages of scanning-free,high resolution,and
We present the design and fabrication of a novel dual-function high contrast gratings that can be used as a polarization-selective beam splitter with transverse
We implement an experimental study for the generation of wideband tunable femtosecond laser with a home-made power-scaled mode-locked fiber oscillator as the pu
In the troposphere,the destruction of ozone and the formation of new particles are closely related to the iodine content,which mainly comes from iodide(I-)and i