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Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
机构
长春光学精密机械与物... [7]
国家授时中心 [1]
采集方式
OAI收割 [8]
内容类型
期刊论文 [5]
会议论文 [3]
发表日期
2024 [1]
2019 [2]
2018 [2]
2011 [3]
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Research on Pressure Sensor of Circular Monocrystalline Silicon Chassis
期刊论文
OAI收割
Journal of Physics: Conference Series, 2024, 卷号: 2800, 期号: 1
作者:
Zhu,Ziyi
;
Zhang,Shougang
  |  
收藏
  |  
浏览/下载:18/0
  |  
提交时间:2025/04/03
Precision instrumentation
Circular pressure sensor
Rectangular pressure sensor
COMSOL simulation
Performance analysis
High Precision Angular Measurement via Dual Imaging Detectors
期刊论文
OAI收割
Ieee Sensors Journal, 2019, 卷号: 19, 期号: 17, 页码: 7308-7312
作者:
H.Yu
;
Q.H.Wan
;
Y.Sun
;
X.R.Lu
;
C.H.Zhao
  |  
收藏
  |  
浏览/下载:19/0
  |  
提交时间:2020/08/24
Angular measurement,high precision,dual imaging detectors,optical encoder,high-resolution,sensor,Engineering,Instruments & Instrumentation,Physics
Small-sized visual angular displacement measurement technology
期刊论文
OAI收割
Measurement, 2019, 卷号: 135, 页码: 406-412
作者:
X.D.Jia
;
Q.H.Wan
;
H.Yu
;
X.R.Lu
;
C.H.Zhao
  |  
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2020/08/24
Image detector,Varying principle,High-precision,High-resolution,optical encoder,high-resolution,sensor,Engineering,Instruments & Instrumentation
Sensor-Based Inspection of the Formation Accuracy in Ultra-Precision Grinding (UPG) of Aspheric Surface Considering the Chatter Vibration
期刊论文
OAI收割
Photonic Sensors, 2018, 卷号: 8, 期号: 2, 页码: 97-102
作者:
Lei, Y.
;
Bai, Y.
;
Xu, Z. J.
  |  
收藏
  |  
浏览/下载:17/0
  |  
提交时间:2019/09/17
Optical aspheric surface
micro-vibrations
ultra-precision grinding
formation accuracy
grinding speed
system
Instruments & Instrumentation
Optics
Evaluation of different calibration equations for NTC thermistor applied to high-precision temperature measurement
期刊论文
OAI收割
Measurement, 2018, 卷号: 120, 页码: 21-27
作者:
Liu, G.
;
Guo, L.
;
Liu, C. L.
;
Wu, Q. W.
  |  
收藏
  |  
浏览/下载:18/0
  |  
提交时间:2019/09/17
Calibration equation
NTC thermistor
High precision
Uncertainty
Engineering
Instruments & Instrumentation
The new approach for infrared target tracking based on the particle filter algorithm (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者:
Sun H.
;
Han H.-X.
;
Sun H.
收藏
  |  
浏览/下载:63/0
  |  
提交时间:2013/03/25
Target tracking on the complex background in the infrared image sequence is hot research field. It provides the important basis in some fields such as video monitoring
precision
and video compression human-computer interaction. As a typical algorithms in the target tracking framework based on filtering and data connection
the particle filter with non-parameter estimation characteristic have ability to deal with nonlinear and non-Gaussian problems so it were widely used. There are various forms of density in the particle filter algorithm to make it valid when target occlusion occurred or recover tracking back from failure in track procedure
but in order to capture the change of the state space
it need a certain amount of particles to ensure samples is enough
and this number will increase in accompany with dimension and increase exponentially
this led to the increased amount of calculation is presented. In this paper particle filter algorithm and the Mean shift will be combined. Aiming at deficiencies of the classic mean shift Tracking algorithm easily trapped into local minima and Unable to get global optimal under the complex background. From these two perspectives that "adaptive multiple information fusion" and "with particle filter framework combining"
we expand the classic Mean Shift tracking framework.Based on the previous perspective
we proposed an improved Mean Shift infrared target tracking algorithm based on multiple information fusion. In the analysis of the infrared characteristics of target basis
Algorithm firstly extracted target gray and edge character and Proposed to guide the above two characteristics by the moving of the target information thus we can get new sports guide grayscale characteristics and motion guide border feature. Then proposes a new adaptive fusion mechanism
used these two new information adaptive to integrate into the Mean Shift tracking framework. Finally we designed a kind of automatic target model updating strategy to further improve tracking performance. Experimental results show that this algorithm can compensate shortcoming of the particle filter has too much computation
and can effectively overcome the fault that mean shift is easy to fall into local extreme value instead of global maximum value.Last because of the gray and fusion target motion information
this approach also inhibit interference from the background
ultimately improve the stability and the real-time of the target track. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
The ship-borne infrared searching and tracking system based on the inertial platform (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者:
Li Y.
;
Zhang H.
;
Zhang H.
;
Li Y.
;
Li Y.
收藏
  |  
浏览/下载:40/0
  |  
提交时间:2013/03/25
As a result of the radar system got interferenced or in the state of half silent
it can cause the guided precision drop badly In the modern electronic warfare
therefore it can lead to the equipment depended on electronic guidance cannot strike the incoming goals exactly. It will need to rely on optoelectronic devices to make up for its shortcomings
but when interference is in the process of radar leading
especially the electro-optical equipment is influenced by the roll
pitch and yaw rotation
it can affect the target appear outside of the field of optoelectronic devices for a long time
so the infrared optoelectronic equipment can not exert the superiority
and also it cannot get across weapon-control system "reverse bring" missile against incoming goals. So the conventional ship-borne infrared system unable to track the target of incoming quickly
the ability of optoelectronic rivalry declines heavily.Here we provide a brand new controlling algorithm for the semi-automatic searching and infrared tracking based on inertial navigation platform. Now it is applying well in our XX infrared optoelectronic searching and tracking system. The algorithm is mainly divided into two steps: The artificial mode turns into auto-searching when the deviation of guide exceeds the current scene under the course of leading for radar.When the threshold value of the image picked-up is satisfied by the contrast of the target in the searching scene
the speed computed by using the CA model Least Square Method feeds back to the speed loop. And then combine the infrared information to accomplish the closed-loop control of the infrared optoelectronic system tracking. The algorithm is verified via experiment. Target capturing distance is 22.3 kilometers on the great lead deviation by using the algorithm. But without using the algorithm the capturing distance declines 12 kilometers. The algorithm advances the ability of infrared optoelectronic rivalry and declines the target capturing time by using semi-automatic searching and reliable capturing-tracking
when the lead deviation of the radar is great. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
Simulation and experiment of the static FTIR based on micro multi-step mirrors (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Sensor and Micromachined Optical Device Technologies, May 24, 2011 - May 26, 2011, Beijing, China
作者:
Liang Z.-Z.
;
Zhang J.
;
Zhang J.
;
Zhang J.
;
Zhu W.-B.
收藏
  |  
浏览/下载:31/0
  |  
提交时间:2013/03/25
In recent years
Fourier transform spectrometer (FTS) with small size and low mass is required in many applications with growing need for real-time and small platform spectral detection. In this paper
a micro Fourier transform infrared spectrometer (FTIR) based on spatial modulation mode was designed. This spectrometer has the advantages of high stability and simplified configuration. It also promises optical path differences (OPD) with high precision
as MOEMS technology is used in manufacturing the key components. The simulation and the experiments with regard to this FTIR configuration have been done. Firstly
the diffraction effect of the micro multi-step mirrors (MMSMs) is studied. We discuss the influence to the reversed spectrum by different mirror widths and different diffraction distances. Secondly
we simulate and analyze the influence of the source solid angle to the spectral resolution. Thirdly
we set up the theoretical model of the collimation error which is mainly from the defocus of the optical system and analyze the result caused by the collimation error. Fourthly
a new discrete Fourier transform arithmetic using least-squares cosines progression (LSCP) is proposed which can reconstruct the spectrum with nonuniform sampled signals. Finally
the MMSMs are fabricated used the MOEMS technology and the structural parameters are tested. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).