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12条,第1-10条 帮助

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Development of a leaf area index-based relative threshold method for identifying agricultural drought areas 期刊论文  OAI收割
JOURNAL OF HYDROLOGY, 2024, 卷号: 641, 页码: 131846
作者:  
Shi, Jiali;  Sang, Yan-Fang;  Sun, Shao;  Aghakouchak, Amir;  Hu, Shi
  |  收藏  |  浏览/下载:15/0  |  提交时间:2024/10/21
Accuracy assessment of four cloud-free snow cover products over the Qinghai-Tibetan Plateau 期刊论文  iSwitch采集
INTERNATIONAL JOURNAL OF DIGITAL EARTH, 2019, 卷号: 12, 期号: 4, 页码: 375-393
作者:  
Hao, Xiaohua;  Luo, Siqiong;  Che, Tao;  Wang, Jian;  Li, Hongyi
收藏  |  浏览/下载:91/0  |  提交时间:2019/10/08
Geographical detection of groundwater pollution vulnerability and hazard in karst areas of Guangxi Province, China 期刊论文  OAI收割
ENVIRONMENTAL POLLUTION, 2019, 卷号: 245, 页码: 627-633
作者:  
Zhu, Zhen;  Wang, Jiaxin;  Hu, Maogui;  Jia, Lin
  |  收藏  |  浏览/下载:33/0  |  提交时间:2019/05/22
Geographical detection of groundwater pollution vulnerability and hazard in karst areas of Guangxi Province, China 期刊论文  OAI收割
ENVIRONMENTAL POLLUTION, 2019, 卷号: 245, 页码: 627-633
作者:  
Zhu, Zhen;  Wang, Jiaxin;  Hu, Maogui;  Jia, Lin
  |  收藏  |  浏览/下载:27/0  |  提交时间:2019/05/22
Geographical detection of groundwater pollution vulnerability and hazard in karst areas of Guangxi Province, China 期刊论文  OAI收割
ENVIRONMENTAL POLLUTION, 2019, 卷号: 245, 页码: 627-633
作者:  
Zhu, Zhen;  Wang, Jiaxin;  Hu, Maogui;  Jia, Lin
  |  收藏  |  浏览/下载:11/0  |  提交时间:2019/05/22
Short-offset grounded-wire TEM method for efficient detection of mined-out areas in vegetation-covered mountainous coalfields 期刊论文  OAI收割
EXPLORATION GEOPHYSICS, 2017, 卷号: 48, 期号: 4, 页码: 374-382
作者:  
Zhou, Nannan;  Xue, Guoqiang;  Hou, Dongyang;  Li, Hai;  Chen, Weiying
  |  收藏  |  浏览/下载:44/0  |  提交时间:2018/09/26
Short-offset grounded-wire TEM method for efficient detection of mined-out areas in vegetation-covered mountainous coalfields 期刊论文  OAI收割
EXPLORATION GEOPHYSICS, 2017, 卷号: 48, 期号: 4, 页码: 374-382
作者:  
Zhou, Nannan;  Xue, Guoqiang;  Hou, Dongyang;  Li, Hai;  Chen, Weiying
  |  收藏  |  浏览/下载:37/0  |  提交时间:2018/09/26
Using Landsat images to monitor changes in the snow-covered area of selected glaciers in northern Pakistan 期刊论文  OAI收割
Journal of Mountain Science, 2017, 卷号: 14, 期号: 10, 页码: 2013-2027
作者:  
Chaman GUL;  KANG Shi-chang;  Badar GHAURI;  Mateeul HAQ;  Sher MUHAMMAD
  |  收藏  |  浏览/下载:51/0  |  提交时间:2017/10/09
Research on the Thermal Infrared Polarization Properties of Fresh Snow SCI/SSCI论文  OAI收割
2015
作者:  
Wang T. T.;  Li, Z. L.;  Tang, B. H.;  Sun, W. Q.;  Zhao, Y. S.
收藏  |  浏览/下载:21/0  |  提交时间:2015/12/09
Method of improving the accuracy of image motion measurement for panoramic aerial cameras (EI CONFERENCE) 会议论文  OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China
作者:  
Jia P.
收藏  |  浏览/下载:29/0  |  提交时间:2013/03/25
To improve the accuracy of image motion measurement for panoramic aerial cameras  the paper proposed a method of real-time image motion measurement based on 2D spatial correlation. An auxiliary area CCD is positioned paralleled to the main linear TDI CCD in the focal plane of the camera. For every frame of the image sequence taken by the auxiliary CCD  a prediction on the displacement of the current image in the flight direction is made based on the forward image motion velocity. The current and the reference images are combined together for 2D-correlation  which products an image motion vector. By decomposing the vector  both the forward and pendulum-swing image motions can be determined. The demanding computational requirements for the real-time 2D-correlation are covered by a joint transform optical correlator. Simulation test results show that the accuracy is improved and the measurement error is within 0.2 pixels for input images with SNR=1 dB. 2010 Copyright SPIE - The International Society for Optical Engineering.