中国科学院机构知识库网格系统: 检索

Flexible On-Orbit Calibration for Monocular Camera and Laser Rangefinder Integrated Pose Measurement System 期刊论文 OAI收割
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2023, 卷号: 72
作者: Zhang, Guangdong; Zhang, Gaopeng; Yang, Hongtao; Wang, Changqing; Bao, Wenfan

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收藏 | 浏览/下载：22/0 | 提交时间：2023/06/05

Calibration Cameras Measurement by laser beam Lasers Space vehicles Laser theory Extraterrestrial measurements Integrated sensor laser rangefinder on-orbit calibration pose matrix space camera

Development, Calibration, and Image Processing of Underwater Structured Light Vision System: A Survey 期刊论文 OAI收割
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2023, 卷号: 72, 页码: 18
作者: Fan, Junfeng; Wang, Xuan; Zhou, Chao; Ou, Yaming; Jing, Fengshui

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收藏 | 浏览/下载：23/0 | 提交时间：2023/11/17

Machine vision Measurement by laser beam Three-dimensional displays Cameras Sea measurements Calibration Image processing system calibration system development underwater structured light vision system

Non-line-of-Sight Imaging via Neural Transient Fields 期刊论文 OAI收割
IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, 2021, 卷号: 43, 期号: 7, 页码: 2314-2328
作者: Zhong, Zhao; Yang, Zichen; Deng, Boyang; Yan, Junjie; Wu, Wei

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收藏 | 浏览/下载：43/0 | 提交时间：2021/08/15

Transient analysis Image reconstruction Imaging Nonlinear optics Measurement by laser beam Surface reconstruction Solid modeling Computational photography non-line-of-sight imaging neural radiance field neural rendering

Single Tree Segmentation and Diameter at Breast Height Estimation With Mobile LiDAR 期刊论文 OAI收割
IEEE ACCESS, 2021, 卷号: 9, 页码: 24314-24325
作者: Liu, Lulu; Zhang, Aiwu; Xiao, Shen; Hu, Shaoxing; He, Nianpeng

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收藏 | 浏览/下载：36/0 | 提交时间：2021/04/25

Three-dimensional displays Forestry Vegetation Laser radar Estimation Sensors Measurement by laser beam Diameter at breast height mobile laser scanning point cloud single tree segmentation

Yb/Ce Codoped Aluminosilicate Fiber With High Laser Stability for Multi-kW Level Laser 期刊论文 OAI收割
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2020, 卷号: 38, 期号: 24, 页码: 6924-6931
作者: She, Shengfei; Liu, Bo; Chang, Chang; Xu, Yantao; Xiao, Xusheng

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收藏 | 浏览/下载：92/0 | 提交时间：2021/01/07

Fiber lasers Optical fiber amplifiers Laser stability Power lasers Preforms Measurement by laser beam Fiber fabrication laser stability optical fibers rare-earth-doped materials

Misalignment Measurement of Orbital Angular Momentum Signal Based on Spectrum Analysis and Image Processing 期刊论文 OAI收割
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2020, 卷号: 68, 期号: 1, 页码: 521-526
作者: Gao, Xinlu; Song, Xiyao; Zheng, Zhennan; Xie, Mutong; Huang, Shanguo

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收藏 | 浏览/下载：26/0 | 提交时间：2020/12/10

Measurement by laser beam Laser beams Antenna measurements Extraterrestrial measurements Image processing Distortion measurement Spectral analysis Antenna radiation patterns dipole radiation image processing misalignment measurement orbital angular momentum (OAM)

Optimum design of laser encoding and decoding on laser beam-riding guidance (EI CONFERENCE) 会议论文 OAI收割
2nd International Conference on Frontiers of Manufacturing and Design Science, ICFMD 2011, December 11, 2011 - December 13, 2011, Taichung, Taiwan
作者: Yang L.; Yang L.

收藏 | 浏览/下载：30/0 | 提交时间：2013/03/25

Operating principle of laser beam-riding guidance was set forth. Based on the principle of spatial frequency-encoding experimental results demonstrated that the receiver can receive correctly the encoded signal and can decode the signal an optimum laser encoding mode was designed measurement for the missdistance is feasible and all the performance parameters satisfy the demand. (2012) Trans Tech Publications which can transfer continuous laser into pulse laser that represents different position information. Then the mathematic model of deviation from target is built Switzerland. a modified encoding pattern was presented which is composed of two light paths crossed 90. Azimuth information of target is given in orthogonal coordinate system and deviation from target is linearity. As well as characteristic distribution of spatial laser field is analyzed. Corresponding decoding mode was presented by testing in 2 kilometers outdoor

Accurate determination of subnanoscale deformation with combined laser calorimetry and surface thermal lens technique 期刊论文 OAI收割
APPLIED PHYSICS LETTERS, 2009, 卷号: 94, 期号: 13
作者: Liu, Mingqiang; Li, Bincheng; Wang, Yanru

收藏 | 浏览/下载：20/0 | 提交时间：2015/09/21

calorimetry deformation measurement by laser beam nanomechanics optical elements optical films optical testing silicon compounds thermal lensing wavefront sensors

Research on 10.6 m laser beam monitoring in CO2 laser processing system (EI CONFERENCE) 会议论文 OAI收割
Infrared Materials, Devices, and Applications, November 12, 2007 - November 15, 2007, Beijing, China
作者: Gao Y.; Shao S.

收藏 | 浏览/下载：23/0 | 提交时间：2013/03/25

It is a key point of CO2 laser beam monitoring in the CO 2 laser processing system to achieve alignment between CO2 laser and PL (pointing and launching) system. By monitoring the angle offset of CO2 laser beam the compensation can be gotten witch is given to fast-steering mirror to rectify the direction of laser beam. But the normal photoelectric detector can not get the laser signal because of CO2 laser's high energy and long wavelength. Its wavelength is 10.6m and its power can reach kW level. Consequently it is difficult to detect the high-energy 10.6m laser beam directly. So we monitored the output mirror of laser resonator superseded the laser beam indirectly. The laser beam monitoring system could be designed based on CCD laser auto-collimation angular measurement principle and image processing method. In this paper application of CCD laser auto-collimation angular measurement principle and image processing method for CO2 laser beam monitoring system is introduced particularly After design fabrication and alignment the monitoring system can be used for experimental study that including angular measurement accuracy and angle offset measurement of CO2 laser beam. Angle offset range and angle variation rule of CO2 laser beam is also can be acquired for further research.

Scaling and analyzing the influence of fluid surface of fluid with nano-granular through speckle pattern experiment (EI CONFERENCE) 会议论文 OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Advanced Optical Manufacturing Technologies, July 8, 2007 - July 12, 2007, Chengdu, China
作者: Wang X.; Wang Y.; Wang Y.; Wang Y.; Wang Y.

收藏 | 浏览/下载：18/0 | 提交时间：2013/03/25

An optical system with double beam interference system was designed to measure the movement of nano-particles in fluid with laser speckle technology. In order to investigate the influence of the scattering light generated from liquid surface on speckle patterns the liquid surface contour was dynamically detected by WYKO during nano-particle movement. The result demonstrates that the fluctuation of fluid surface is slight. Meanwhile in order to further analyze this effect a piece of ground glass was employed. The process of ground glass to be polished to optical glass was studied and tested continuously using WYKO and laser speckle technology. And then the speckle patterns generated from kerosene fluid surface were studied. By contrast the results show that the fluid surface is transparent to the measurement wavelength. The influence of the surface of fluid can be neglected. Furthermore the conclusion illustrates that laser speckle technique is an effective and reliable method to study the movement of nano-granular in fluid.