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The simulation and analysis of background noise effect on inter-satellite link 会议论文
2014 International Conference on Computer, Intelligent Computing and Education Technology, CICET 2014, March 27, 2014 - March 28, 2014, Hong Kong, Hong kong
Gao J.; Zhang Y.-Y.; Liang W.-D.
收藏  |  浏览/下载：19/0  |  提交时间：2015/04/27
The research of high reliability secondary power on orbiting carbon observatory 会议论文
4th International Conference on Manufacturing Science and Engineering, ICMSE 2013, March 30, 2013 - March 31, 2013, Dalian, China
Wang X.; Wang J.; Yu P.; Qi X.; Li X.; Wang Y.
收藏  |  浏览/下载：16/0  |  提交时间：2014/05/15
Label-free acoustic and optical biosensors playing on evanescent waves 会议论文
Progress in Electromagnetics Research Symposium, PIERS 2013 Stockholm, August 12, 2013 - August 15, 2013, Stockholm, Sweden
Wu Y.; Liu G.; Hao P.; Wu J.; Deng Y.; Liu Y.; Xuan M.
收藏  |  浏览/下载：14/0  |  提交时间：2014/05/15
Field-line coupling interference prediction of LCD module in high-power TEA CO2 laser system (EI CONFERENCE) 会议论文
2012 International Conference on Optoelectronics and Microelectronics, ICOM 2012, August 23, 2012 - August 25, 2012, Changchun, China
Ge X.; Li X.
收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25
The design of acquisition circuit for grating digital signal based on FPGA (EI CONFERENCE) 会议论文
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
Jiang L.-F.; Wang W.-G.
收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25
In order to resolve the poor suppression capability of noise and fitter interference existing in grating encoder high-rate subdivision and the poor accuracy of kam-to  counting circuit  the results show that the design method will help improve the controlled object of measurement precision and control accuracy. 2010 IEEE.  we design a circuit based on FPGA to realize multiplier  kam and filter for the output of two-way orthogonal signal generated by Incremental Optical Encoder. The system is mainly divided into three modules such as filtering  multiplier kam-to and counting. The main function of filter circuit is to eliminate the jitter and noise interference existing in the quadrate encoder signals. Kam-to multiplier circuit can accurately judge the full cycle and half-cycle of incremental encoder  at the same time can make fourfold multiplier. Counting circuit can use IP cores owned by Quartus II which is not restricted on the median. At last  timing simulation based on Modelsim carried on the three modules  
Noise processing technology of a TDICCD sensor (EI CONFERENCE) 会议论文
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Zhang L.-P.; He J.-Q.; Hongliang D.; Wan C.-M.
收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25
In the application of TDI-CCD  the other is all kinds of interference noise produced in the working process of a TDI-CCD  for reset noise  because of its serious noise interference  such as reset noise and 1 / f noise  correlated double sampling is employed. The experimental results show that after noise processing  the imaging quality is reduced  etc. According to the features of noise  the output S/N has been raised to about 50 dB. 2010 IEEE.  so that it is necessary to study the noise characteristics of TDI-CCD. There are two categories of noise  this paper has studied the corresponding noise-processing technology. For dark current noise  one is the inherent noise  refrigeration is taken  including shot noise  dark current noise  fixed pattern noise and transfer noise etc.  
Modulation transfer function in seeker camera limits resulting from missile flutter caused by aerodynamic force (EI CONFERENCE) 会议论文
2010 2nd International Conference on Industrial Mechatronics and Automation, ICIMA 2010, May 30, 2010 - May 31, 2010, Wuhan, China
Ai X.; Zhang X.; Jiang Z.; Wei Q.; Jia H.
收藏  |  浏览/下载：25/0  |  提交时间：2013/03/25
The imaging quality of seeker in flight mode has been evaluated through analyzing the effects of missile flutter on optical modulation transfer function (MTF) of the optical system. Firstly the data of transverse vibration has been processed to eliminate the trend term caused by the trajectory  then obtained the displacement with two times trapezoidal integration. For the side rotation  the high frequency noise interference in the data has been filtered by using five-point moving average method. Took this model as the quivering rule between the object and the image  and then analyzed the effects of the transverse vibration and the side rotation on imaging quality through MTF. By calculation  the r.m.s value of the image motion caused by missile transverse vibration is 0.026mm  and the side rotation angle is 0.0044 . Through the establishment of two modulation transfer functions (MTF) of image random vibration and linear vibration  the results show that the image quality had declined  and the effect of transverse vibration on image quality is obvious. Through improving the rigidity of the missile and selection of small focal length optical system and shorten the time of exposure can improve the imaging quality of the seeker. 2010 IEEE.  
Research of improving the accuracy of license plate character segmentation (EI CONFERENCE) 会议论文
5th International Conference on Frontier of Computer Science and Technology, FCST 2010, August 18, 2010 - August 22, 2010, Changchun, China
Qiao S.; Zhu Y.; Li X.; Liu T.; Zhang B.
收藏  |  浏览/下载：24/0  |  提交时间：2013/03/25
Research on the filter technology of DC/DC converter output terminal (EI CONFERENCE) 会议论文
2009 3rd IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, MAPE 2009, October 27, 2009 - October 29, 2009, Beijing, China
Wang W.; Yang X.; Zhai H.-Y.
收藏  |  浏览/下载：15/0  |  提交时间：2013/03/25
Study of unequal error protection method based on JPEG2000 for surveyingmapping image (EI CONFERENCE) 会议论文
International Conference on Computer Science and Software Engineering, CSSE 2008, December 12, 2008 - December 14, 2008, Wuhan, Hubei, China
Yao Q.; Cao M.
收藏  |  浏览/下载：88/0  |  提交时间：2013/03/25
On aviation mapping  compression image maybe not decode because of wireless transmission interference. UEP(Unequal Error Protection) scheme is put forward about layer and block structure of JPEG2000 image compression method  flexibly enhances local reconfigurable image's quality which is in favor of identifier in the region of interest. 2008 IEEE.  and realizes three degrees UEP of data block  data header  image data via various degrees correction-coding under the condition of obstruct  naked and shade. BCH  RS and Hamming coding are simulated  and image decoding success rate and image's quality are analyzed according to different coding and ROI (Region of Interest) in the Gaussian white noise model and rayleigh fading model. Results shows that the method we putted forward roughly improves decoding success rate  at the same time  almost not increasing bandwidth  

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