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长春光学精密机械与物... [4]
西安光学精密机械研究... [2]
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OAI收割 [9]
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会议论文 [6]
期刊论文 [3]
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2024 [3]
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Design of Optical System for Ultra-Large Range Line-Sweep Spectral Confocal Displacement Sensor
期刊论文
OAI收割
SENSORS, 2024, 卷号: 24, 期号: 3
作者:
Yang, Weiguang
;
Du, Jian
;
Qi, Meijie
;
Yan, Jiayue
;
Cheng, Mohan
  |  
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2024/03/15
spectral confocal
precision measurement
dispersive objective
optical design
imaging spectrometer
Prediction of 3-D Ocean Temperature Based on Self-Attention and Predictive RNN
期刊论文
OAI收割
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, 2024, 卷号: 21, 页码: 5
作者:
Yue, Weihao
;
Xu, Yongsheng
;
Xiang, Liang
;
Zhu, Shanliang
;
Huang, Chao
  |  
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2024/06/04
Climate change
Recurrent neural networks
Temperature measurement
Ocean temperature
Predictive models
Global gridded temperature data with Barnes objective analysis (BOA-ARGO)
predictive recurrent neural network (PredRNN)
self-attention
Design of a large-range dispersive objective for line-sweep spectral confocal displacement sensors
会议论文
OAI收割
Nanjing, China, 2023-10-22
作者:
Yang, Weiguang
;
Qi, Meijie
;
Yan, Jiayue
;
Cheng, Mohan
;
Zhang, Zhoufeng
  |  
收藏
  |  
浏览/下载:12/0
  |  
提交时间:2024/08/27
spectral confocal
precision measurement
dispersive objective
double telecentric lens
optical design
Friction Estimation and Roll Force Prediction during Hot Strip Rolling
期刊论文
OAI收割
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL, 2016, 卷号: 23, 期号: 12, 页码: 1268-1276
作者:
Li Weigang
;
Liu Chao
;
Feng Ning
;
Chen Xi
;
Liu Xianghua
  |  
收藏
  |  
浏览/下载:5/0
  |  
提交时间:2021/02/26
OXIDE SCALE
PRESSURE
STEEL
MODEL
MILL
hot rolling
roll force
friction coefficient
soft measurement
multi-objective optimization
Stereoscopic visual fatigue assessment and modeling
会议论文
OAI收割
25th Stereoscopic Displays and Applications Conference, SD and A 2014, San Francisco, CA, United states, February 3, 2014 - February 5, 2014
Wang, Danli (1)
;
Wang, Tingting (1)
;
Gong, Yue (1)
  |  
收藏
  |  
浏览/下载:37/0
  |  
提交时间:2014/12/16
Stereoscopic display
visual fatigue
subjective assessment
objective measurement
predictive model
The approximate calculation of atmospheric path radiance in close range and horizontal direction (EI CONFERENCE)
会议论文
OAI收割
2012 International Conference on Sensors, Measurement and Intelligent Materials, ICSMIM 2012, December 26, 2012 - December 27, 2012, Guilin, China
作者:
Sun Z.
;
Chen Y.
;
Zhang Y.
收藏
  |  
浏览/下载:42/0
  |  
提交时间:2013/03/25
Atmospheric path radiance is the key factor in the accuracy of objective radiation measurement. In the traditional radiation character measurements
it is compared with the results of MODTRAN and measurement in experiment. It is revealed that the accuracy of software is 7.8%
under the help of the atmospheric observation equipment
and the formula is 4.9%
MODTRAN and other software likewise
which could demonstrate the validity of the pproximate calculation formula in close range and horizontal direction. In this article
the indeterminacy rate could be around 10~20%
in the process of deducing and experiment
it is highly restricts the measurement accuracy of objective radiation. For this reason
the validity of the approximate calculation formula in close range and horizontal direction is fully proved
it is quite significant to develop the study of measure and calculation in path radiance. The approximate calculation formula for path radiance in close range and horizontal direction is expressed in this article
which supply a new method in approximate calculation of path radiance for objective radiation measurement. (2013) Trans Tech Publications
Switzerland.
Speech signal enhancement through wavelet domain MMSE filtering (EI CONFERENCE)
会议论文
OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Fenghua Z.
;
Le Y.
;
Jian W.
;
Qiang S.
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2013/03/25
A new speech enhancement system that combine robust signal enhancement and minimum signal distortion is proposed in this paper. The proposed method introduces frequency depended
parametric
MMSE filtering techniques that involve wavelet packets. Voice activity detection (VAD) is used to further distinguish speech from noise and help to adaptively remove noise components from color noise eruptive noisy speech
while perceptual criteria is also taken into account. Experimental results and objective quality measurement test results validate the proposed speech enhancement system and illustrate the benefit of the proposed wavelet domain MMSE filtering as an excellent speech enhancement method to provide sufficient noise reduction and good intelligibility and perceptual quality
without causing considerable signal distortion and musical background noise method. 2010 IEEE.
The method on the measurement of the aircraft attitude by the spatial cosines relationship of the single station and planes to the intersection the multi-station of electro-optical theodolite (EI CONFERENCE)
会议论文
OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Zhao L.-R.
;
Cao Y.-G.
收藏
  |  
浏览/下载:20/0
  |  
提交时间:2013/03/25
In order to realize the aircraft attitude measurement
The paper advances electro-optical theodolite methods of measuring the aircraft attitude by using the spatial cosines relationship the single station theodolite and how to use intersection of the multi-station theodolite. The single station theodolite was introduced in a measured distance from the aircraft posture information. An exhaustive approach was used to access to the aircraft axis of the feature points and the location in the space was used to obtain space posture parameters. The multi-station theodolite was introduced to get the information of the aircraft flight attitude by method of using planes to the intersection. Two-dimensional image to obtain objective axis by fitting algorithm using Hough transform. And then
Calculate the vertical distance of the origin to the target of the central axis and the origin to the target of the central axis of the angle between the normal and the X-axis obtaining the linear equation in the two-dimensional plane. Two-dimensional axis of the target image and the camera system's optical center only identified a space plane. The aircraft yaw axis angle and pitch angle can be obtained by getting the space axis using plains to the intersection method. Experimental results show that attitude angle error of the single station theodolite is less than 1 when its distance is less than 6000m and attitude angle error of the multi-station theodolite is less than 0.6 when its intersection angle is between 30 and 150. In this paper
according to test result of precision comparing the mathematical model is correct and the algorithm is reasonable in extracting effective parameters of the aircraft's attitude. 2010 IEEE.
Storage and compression design of high speed CCD (EI CONFERENCE)
会议论文
OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China
Cai X.
;
Zhai L. P.
收藏
  |  
浏览/下载:65/0
  |  
提交时间:2013/03/25
In current field of CCD measurement
large area and high resolution CCD is used to obtain big measurement image
so that
speed and capacity of CCD requires high performance of later storage and process system. The paper discusses how to use SCSI hard disk to construct storage system and use DSPs and FPGA to realize image compression. As for storage subsystem
Because CCD is divided into multiplex output
SCSI array is used in RAID0 way. The storage system is composed of high speed buffer
DMA controller
control MCU
SCSI protocol controller and SCSI hard disk. As for compression subsystem
according to requirement of communication and monitor system
the output is fixed resolution image and analog PAL signal. The compression means is JPEG2000 standard
in which
9/7 wavelets in lifting format is used. 2 DSPs and FPGA are used to compose parallel compression system. The system is composed of FPGA pre-processing module
DSP compression module
video decoder module
data buffer module and communication module. Firstly
discrete wavelet transform and quantization is realized in FPGA. Secondly
entropy coding and stream adaption is realized in DSPs. Last
analog PAL signal is output by Video decoder. Data buffer is realized in synchronous dual-port RAM and state of subsystem is transfer to controller. Through subjective and objective evaluation
the storage and compression system satisfies the requirement of system. 2009 SPIE.