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机构
长春光学精密机械与物... [3]
地理科学与资源研究所 [2]
武汉岩土力学研究所 [1]
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OAI收割 [6]
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会议论文 [3]
期刊论文 [2]
SCI/SSCI论文 [1]
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2024 [1]
2023 [1]
2015 [1]
2010 [1]
2007 [1]
2006 [1]
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Three-dimensional stress variation characteristics in deep hard rock of CJPL-II project based on in-situ monitoring
期刊论文
OAI收割
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY, 2024, 卷号: 34, 期号: 2, 页码: 179-195
作者:
Zheng, Minzong
;
Li, Shaojun
;
Feng, Zejie
;
Xu, Huaisheng
;
Xiao, Yaxun
  |  
收藏
  |  
浏览/下载:2/0
  |  
提交时间:2025/06/27
Disturbance stress
Tensor distance
Stress disturbance index
Principal stress direction
Underground research laboratory
Progress of Ecological Restoration Research Based on Bibliometric Analysis
期刊论文
OAI收割
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 2023, 卷号: 20, 期号: 1
作者:
Wei, Xi
;
Song, Wei
;
Shao, Ya
;
Cai, Xiangwen
  |  
收藏
  |  
浏览/下载:38/0
  |  
提交时间:2023/02/03
ecological restoration
research focus
research direction
Web of Science
Bibliometrix
Important progress and future direction of studies on China's urban agglomerations
SCI/SSCI论文
OAI收割
2015
作者:
Fang C. L.
收藏
  |  
浏览/下载:57/0
  |  
提交时间:2015/12/09
urban agglomeration
research progress
existing problem
spatial
pattern
development direction
China
Research on the the device of non-angular vibration for opto-electronic platform (EI CONFERENCE)
会议论文
OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Smart Structures and Materials in Manufacturing and Testing, April 26, 2010 - April 29, 2010, Dalian, China
An Y.
;
Song C.-P.
;
Kuang R.-J.
;
Jin G.
收藏
  |  
浏览/下载:41/0
  |  
提交时间:2013/03/25
The opto-electronic platform is the main equipment for aviation reconnaissance. It is a surveillance system with the function of search
recognition orientation and tracking by opto- electronic instruments. It is made up of opto-electronic instruments which are used to get high quality image
and stabilization tracking system to control stabilization and gesture of platform for exact tracking. The opto-electronic platform purpose is to achieve high quality image. Besides the impact of optic system
the image quality of the system is influenced greatly in the vibration environment. The research worked by Zhao peng which demonstrated the affection caused by angular vibration was worse than which caused by line vibration
and what was multiplied direct ratio with plane altitude. So it is necessary to design a new device which could be used widely and has good angular vibration isolation effect. According to the theory of parallelogram
the non-angular vibration device had been designed with spatial links
and the theory of non-angular vibration was analyzed. The three-dimensional model was set with UG
the analysis was done by ADAMS/vibration software. The acceleration and displacement response of the device in each direction was calculated by inspiriting it with sine wave of the acceleration in three directions
and the stiffness and damp were studied. All the work prove the design principle of the device is reasonable
and the device is adopted to keep the platform motion moving horizontally
at the meantime the device is good at isolating vibration in all directions. 2010 SPIE.
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:31/0
  |  
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.
On orbit MTF measurement of remote sensing camera based on wavelet transform (EI CONFERENCE)
会议论文
OAI收割
ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
作者:
Wang X.
;
Wang X.
;
Wang X.
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2013/03/25
High resolution remote sensing images are often applied in many research fields. But there are less research on images quality for an orbit remote sensing camera. The magnitude of the OTF
as the modulation transfer function (MTF)
is a measure of the 2-D spatial frequency response of the remote sensing camera. In this paper
knife-edge technique based on quadratic spline wavelet fast transform algorithm is proposed and applied to generate MTF with a greatly high resolution in horizontal or vertical direction. The result has fully demonstrate the potential applicability and good property of the method to estimate MTF for remote sensing camera.