中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共6条,第1-6条 帮助

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Sea surface current response patterns to tropical cyclones 期刊论文  OAI收割
JOURNAL OF MARINE SYSTEMS, 2020, 卷号: 208, 页码: 103345
作者:  
Zhang, Han;  Liu, Xiaohui;  Wu, Renhao;  Chen, Dake;  Zhang, Dongna
  |  收藏  |  浏览/下载:83/0  |  提交时间:2020/09/22
Changes in Tropical-Cyclone Translation Speed over the Western North Pacific 期刊论文  OAI收割
ATMOSPHERE, 2020, 卷号: 11, 期号: 1, 页码: 93
作者:  
Zhang, Dongna;  Zhang, Han;  Zheng, Jiayu;  Cheng, Xuhua;  Tian, Di
  |  收藏  |  浏览/下载:31/0  |  提交时间:2020/09/22
Design and realization of the backup field controllers for LAMOST Spectrographs 会议论文  OAI收割
Amsterdam, Netherlands, 2012-7-1
作者:  
Zhongwen Hu;  Yongtian Zhu
收藏  |  浏览/下载:34/0  |  提交时间:2014/01/09
Comparison of phytoplankton blooms triggered by two typhoons with different intensities and translation speeds in the South China Sea 期刊论文  OAI收割
MARINE ECOLOGY-PROGRESS SERIES, 2008, 卷号: 365, 页码: 57-65
Zhao, H; Tang, DL; Wang, YQ
收藏  |  浏览/下载:25/0  |  提交时间:2011/07/03
Non-contact and on-line cone diameter measuring based on high speed linear CCD (EI CONFERENCE) 会议论文  OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 2, 2005 - November 5, 2005, Zian, China
Guohui Z.; Jianhua W.
收藏  |  浏览/下载:20/0  |  提交时间:2013/03/25
The remarkable improvement of sensing and processing hardware performance makes the non-contact  on-line  high accuracy and high speed measuring possible by means of linear CCD. The goal of this pager is to describe the key questions on designing the cone diameter detecting system by linear CCD. This paper first describes the detecting scheme. In particular  the factors affecting accuracy  such as resolution  voltage difference between neighbor pixels  detecting rate and so on  are analyzed  and the quantitative estimation equations are provided. CCD takes on the photoelectric translation and measuring component double functions  so the waveform of CCD output signal and the affecting factors merit deep discussion. On the basis of discussion  several principles that can be used to improve the boundary recognition accuracy are presented.  
PSO based gabor wavelet feature extraction method (EI CONFERENCE) 会议论文  OAI收割
2004 International Conference on Information Acquisition, ICIA 2004, June 21, 2004 - June 25, 2004, Hefei, China
作者:  
Sun H.;  Zhang Y.;  Sun H.
收藏  |  浏览/下载:13/0  |  提交时间:2013/03/25
In this paper  the time of feature extraction is faster. By test in low contrast image  2D continues Gabor wavelets are adopted to realize feature extraction. By optimize Gabor wavelet's parameters of translation  the feasibility and effectiveness of the algorithm are demonstrated by VC++ simulation platform in experiments. 2004 IEEE.  orientation  and scale to make it approximates a local image contour region. The method of Sobel edge detection is used to get the initial position and orientation value of optimization in order to improve the convergence speed. In the wavelet characteristic space  we adopt PSO (particle swarm optimization) Algorithm to identify points on the security border of the system. Comparing to the LM algorithm  it can ensure reliable convergence the target  which can improve convergent speed