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The application of ratio correction method in radio spectrum 会议论文
Changsha, Hunan, China, 2020-12-18
作者:  Zhang, Yankun;  Li, Mingyue;  He, Lesheng;  Dong L(董亮);  Wang M(汪敏)
收藏  |  浏览/下载：60/0  |  提交时间：2021/10/19
Research and experimental demonstration of UDWDM transmission and wavelength conversion for optical satellite communication based on OFC 会议论文
2018 18th IEEE International Conference on Communication Technology, ICCT 2018, Chongqing, China, 2018-10-08
作者:  Wu, Bin;  Yin, Hongxi;  Xing, Fangyuan;  Ji, Xiuyang
收藏  |  浏览/下载：58/0  |  提交时间：2019/12/02
Improved MUSIC Method for Spatial Spectrum Estimation of Ultrasound Sources 会议论文
Hawaii, USA, July 31 - August 4, 2017
作者:  Wang W(王伟);  Wang, Weifeng;  Du JS(杜劲松)
收藏  |  浏览/下载：26/0  |  提交时间：2018/10/08
A change detection approach of high-resolution imagery combined the pre-classification with the post-classification comparison 会议论文
作者:  Jiang, Ying;  Wen, Xiongfei;  Xiang, Daxiang;  Tan, Debao;  Li, Zhe
收藏  |  浏览/下载：3/0  |  提交时间：2019/12/05
Non-contact Creep Measurement based on Fourier Domain Optical Coherence Tomography 会议论文
作者:  Chen, Danyang;  Zhang, Qiukun;  Zhong, Jianfeng;  Zhong, Shuncong;  Guo, Jinquan
收藏  |  浏览/下载：8/0  |  提交时间：2019/11/21
(7, 4) binary Hamming code for data transition of spread spectrum communications 会议论文
2nd International Conference on Information Technology and Management Innovation, ICITMI 2013, Zhuhai, China, July 23, 2013 - July 24, 2013
作者:  Wen, Guozhi*
收藏  |  浏览/下载：6/0  |  提交时间：2019/12/27
Measurement and Characterization of the Radiated Interference produced by a Static Var Compensator 会议论文
44th International Universities Power Engineering Conference, SEP 01-04, 2009
作者:  Zhang, Li;  Li, Qingmin;  Wang, Wei;  Siew, W. H.;  Yan, J. D.
收藏  |  浏览/下载：2/0  |  提交时间：2019/12/31
Correction method for detection of the frequencies of railway fsk signals (EI CONFERENCE) 会议论文
2008 9th International Conference on Signal Processing, ICSP 2008, October 26, 2008 - October 29, 2008, Beijing, China
Xuguang Y.; Yu J.; Xifeng Z.; Tiefu D.
收藏  |  浏览/下载：57/0  |  提交时间：2013/03/25
In order to acquire the information of railway binary frequency-shift keying signals  which include upper/down side frequencies and base low-frequency with high-accuracy  a novel frequency detection algorithm for France UM-71 system is proposed. Combining fast Fourier transform with the ratio correction method  the carrier frequency and the base frequency are obtained. Furthermore  the hardware consumption has been decreased. And it possesses the advantage of simple algorithm and fast operation speed. Comparing with the detection of the base frequency  the upper/down side frequency of railway signal is more difficult. Based on spectrum analysis and the spectrum correction  a new method  which adopts the sliding window  is put forward in this paper. The absolute differences between the upper side frequencies and the down side frequencies obtained are regarded as the criterion for judgment. Then the set of data  in which the maximum absolute value is  is to be the result of the upper/down side frequency. Because the sliding window will go through every stage when the upper/down side frequency changes  therefore  it is not sensitive enough to the position of data which need to be transformed. Using the method mentioned above  the experiment results show that the accuracy requirement of the side frequency is satisfied well. 2008 IEEE.  
Fast determination of total ginsenosides content in Ginseng powder by near infrared reflectance spectroscopy (EI CONFERENCE) 会议论文
ICO20: Biomedical Optics, August 21, 2005 - August 26, 2005, Changchun, China
Chen H.-C.; Chen X.-D.; Lu Y.-J.; Cao Z.-Q.
收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25
Near infrared (NIR) reflectance spectroscopy was used to develop a fast determination method for total ginsenosides in Ginseng (Panax Ginseng) powder. The spectra were analyzed with multiplicative signal correction (MSC) correlation method. The best correlative spectra region with the total ginsenosides content was 1660 nm1880 nm and 2230nm-2380 nm. The NIR calibration models of ginsenosides were built with multiple linear regression (MLR)  principle component regression (PCR) and partial least squares (PLS) regression respectively. The results showed that the calibration model built with PLS combined with MSC and the optimal spectrum region was the best one. The correlation coefficient and the root mean square error of correction validation (RMSEC) of the best calibration model were 0.98 and 0.15% respectively. The optimal spectrum region for calibration was 1204nm-2014nm. The result suggested that using NIR to rapidly determinate the total ginsenosides content in ginseng powder were feasible.  
An approach to discrete spectrum correction based on energy centroid (CPCI-S收录) 会议论文
ADVANCED NONDESTRUCTIVE EVALUATION I, PTS 1 AND 2, PROCEEDINGS
作者:  Ding Kang;  Cao Dangdang;  Li Weihua
收藏  |  浏览/下载：0/0  |  提交时间：2019/04/18

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