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长春光学精密机械与物... [6]
海洋研究所 [1]
合肥物质科学研究院 [1]
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会议论文 [6]
期刊论文 [2]
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2021 [1]
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Analysis of Observation Performance of a Mobile Coherent Doppler Wind Lidar Using DBS Scanning Mode
期刊论文
OAI收割
Journal of Physics: Conference Series, 2021, 卷号: 1739
作者:
Dong,Debao
;
Yang,Shizhi
;
Weng,Ningquan
;
Zhang,Guangyuan
;
Huang,Jing
  |  
收藏
  |  
浏览/下载:28/0
  |  
提交时间:2022/02/21
Coherent Doppler Wind Lidar (CDWL)
Observation performance
Doppler beam-swinging (DBS) scanning
Wind direction and Wind speed
Comparison experiment
Biomineralization of Middle Rare Earth Element Samarium in Yeast and Bacteria Systems
期刊论文
OAI收割
GEOMICROBIOLOGY JOURNAL, 2018, 卷号: 35, 期号: 5, 页码: 375-384
作者:
Jiang, Mingyu
;
Ohnuki, Toshihiko
;
Utsunomiya, Satoshi
  |  
收藏
  |  
浏览/下载:31/0
  |  
提交时间:2019/08/21
Biomineralization
comparison experiment
rare earth elements
sorption process
The design of space scanning mirror control system based on optimal tracking controller (EI CONFERENCE)
会议论文
OAI收割
2012 International Conference on Electrical Insulating Materials and Electrical Engineering, EIMEE 2012, May 25, 2012 - May 27, 2012, Shenyang, Liaoning, China
作者:
Zhang P.
收藏
  |  
浏览/下载:20/0
  |  
提交时间:2013/03/25
Control system of space scanning mirror has high requirement of scanning accuracy. The use of optimal tracking controller
simulation experiment of the control system based on optimal tracking controller is carried out. The simulation result
instead of traditional PID controller
the control system based on optimal tracking controller is designed
in comparison with the system based on a PID controller
can effectively improve the scanning accuracy of space scanning mirror control system. State space model of the control system is established
shows that the scanning mirror control system using optimal tracking controller instead of PID controller has higher scanning accuracy and faster response. (2012) Trans Tech Publications
Switzerland.
Study on time registration method for photoelectric theodolite data fusion (EI CONFERENCE)
会议论文
OAI收割
10th World Congress on Intelligent Control and Automation, WCICA 2012, July 6, 2012 - July 8, 2012, Beijing, China
Yang H.-T.
;
Gao H.-B.
收藏
  |  
浏览/下载:20/0
  |  
提交时间:2013/03/25
In range measurement
theodolite and radar constitute a real-time tracking system at different sites to track the same target in the air and get useful information exactly and timely. As the optical theodolite and radar have different sampling frequency and measurement system
the data is sent to the fusion center is asynchronous. This paper proposed a time registration method based on multi-sensor data using Wavelet neural network algorithm
which not only better solved the basic problems of theodolite fusion tracking but also improve the efficiency of data fusion. Simulation experiment and comparison with other time registration method have shown the advantage of this method. 2012 IEEE.
A new method for comparing Zernike circular polynomials with Zernike annular polynomials in annular pupils (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
Jing S.
;
Dongmei M.
收藏
  |  
浏览/下载:35/0
  |  
提交时间:2013/03/25
To compare the difference between Zernike annular polynomial and Zernike circular polynomial
an approximate mathematic relationship between Zernike annular polynomial coefficients and SEIDEL coefficients is proposed. A new method is applied in comparing experiment. For real interferometric data of annular wave front
the SEIDEL aberration calculated in different ways is removed from the original wave front. Residual astigmatism aberration in annular polynomial way is close to zero
but defocus and sphere aberration are 0.002709
-0.00182. The residual SEIDEL using annular polynomial is least. Data used in comparison shows that Zernike annular polynomial is more accurate and meaningful for the decomposition of aberrations and the calculation of Seidel aberrations in annular pupil. The calculation in astigmatism aberration is most accurate and those in defocus and sphere aberration are least accurate
when the first 9 terms are used in approximate solving SEIDEL. More coefficients are needed to obtain the real SEIDEL. 2010 IEEE.
A new accurate and fast algorithm of sub-pixel image registration (EI CONFERENCE)
会议论文
OAI收割
2010 IEEE 10th International Conference on Signal Processing, ICSP2010, October 24, 2010 - October 28, 2010, Beijing, China
作者:
He B.
收藏
  |  
浏览/下载:32/0
  |  
提交时间:2013/03/25
In terms of large field view and multi-channel TDICCD remote sensing images
previous interpolation methods and curve fitting methods are not able to achieve the high accuracy and fast registration
and their noise immunity and robustness is not high. For that
this paper presents a more accurate and faster method
iterative pixel interpolation and surface fitting method. Firstly
the method uses the some overlapping pixels between multi-channel images. Secondly
the proposed technique
which is based on the maximization of the correlation coefficient function
combines an efficient pixel-moving interpolation scheme with surface fitting
which makes use of accurate interpolation calculation and fast surface fitting in the iterative process. Finally
the accuracy and speed of the algorithm is evaluated by sub-pixel registration of multi-channel images and comparison with other sorts of efficient methods. The experiment results show that the accuracy of the method reaches 0.01 pixels and it is 3 times faster than the interpolation method. In the registration of large field view and multi-channel TDICCD images
the method is accurate and fast
with greatly high stability
noise immunity and robustness. 2010 IEEE.
The analysis and design of low velocity estimation based on observer (EI CONFERENCE)
会议论文
OAI收割
2009 IEEE International Conference on Automation and Logistics, ICAL 2009, August 5, 2009 - August 7, 2009, Shenyang, China
作者:
Wang D.
;
Zhang S.
收藏
  |  
浏览/下载:36/0
  |  
提交时间:2013/03/25
Low velocity servo system needs precision velocity estimation. An observer for low velocity estimation was proposed in this paper. First
the source of low velocity estimation errors and the shortcomings of the single period difference were analyzed. The relationship between the estimation accuracy and estimator's frequency characteristics was concluded. Then
the structure of the observer was proposed. Frequency characteristics were used to design the compensator which can stabilize the observer. The stability of the observer was also discussed. At last
the observer's estimation accuracy was evaluated through a quantitative comparison. The results of simulation and experiment have shown that the quantized error in velocity estimation decreases dramatically when a velocity observer is used. Compared with some commonly-used estimators
the phase lag accompanying the observer is much less. 2009 IEEE.
The Simulation measurement experiment and calibration for Solar Total Irradiance Monitor on board (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
Yupeng W.
;
Wei F.
;
Bingxi Y.
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  |  
浏览/下载:44/0
  |  
提交时间:2013/03/25
STIM (Solar Total Irradiance Monitor) can be used on sun-synchronous polar orbit weather satellites to measure the total solar irradiance. It contains three independent and identical wide view absolute radiometers. They are mounted on the satellite in an angle which ensure the sun scan over the field of view of the absolute radiometers. This measurement method doesn't need the instrument tracking the sun but the sun scan over the field of view of the absolute radiometers in each orbit cycle. The paper presents the measurement method of simulation for solar irradiance measurement and calibration by mounting the instrument on a two-axis rotation table. By controlling the rotation angle velocity of the instrument in the meridian direction being the same as that of the weather satellite's on orbit
we can measure the solar irradiance when the sun scan over the field of view of the absolute radiometers to simulate the onboard state. And we have operated the measurement with the prototype of STIM. The SIAR-1 is traceable to WRR and serves as a transfer standard. So simultaneous comparison measurements between SIAR-1 and each of the three wide view absolute radiometers are measured to provide calibration corrections to the instrument. And we have a further study at the influence of stray light to the measurement results. This paper presents the method of simulation experiment and calibration for solar irradiance measurement with Solar Total Irradiance Monitor on board.