中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
机构
采集方式
内容类型
发表日期
学科主题
筛选

浏览/检索结果: 共7条,第1-7条 帮助

条数/页: 排序方式:
Intercomparison of NO3 under Humid Conditions with Open-Path and Extractive IBBCEAS in an Atmospheric Reaction Chamber 期刊论文  OAI收割
REMOTE SENSING, 2023, 卷号: 15, 期号: 3, 页码: 739
作者:  
Wang, Meng;  Lou, Shengrong;  Hu, Weiwei;  Wang, Haichao;  Wang, Xinming
  |  收藏  |  浏览/下载:7/0  |  提交时间:2024/09/26
Near real time de-noising of satellite-based soil moisture retrievals: An intercomparison among three different techniques 期刊论文  OAI收割
REMOTE SENSING OF ENVIRONMENT, 2017, 卷号: 198, 页码: 17-29
作者:  
Massari, Christian;  Su, Chun-Hsu;  Brocca, Luca;  Sang, Yan-Fang;  Ciabatta, Luca
  |  收藏  |  浏览/下载:26/0  |  提交时间:2019/09/25
A HClO-specific near-infrared fluorescent probe for determination of Myeloperoxidase activity and imaging mitochondrial HClO in living cells 期刊论文  OAI收割
BIOSENSORS & BIOELECTRONICS, 2016, 卷号: 86, 页码: 68-74
作者:  
Li, Peng;  Tian, Fengshou;  Jia, Yan;  Zhang, Yanan;  Song, Wei
  |  收藏  |  浏览/下载:44/0  |  提交时间:2019/06/20
Improving Noah land surface model performance using near real time surface albedo and green vegetation fraction 期刊论文  iSwitch采集
AGRICULTURAL AND FOREST METEOROLOGY, 2016, 卷号: 218, 页码: 171-183
作者:  
Yin, Jifu;  Zhan, Xiwu;  Zheng, Youfei;  Hain, Christopher R.;  Ek, Michael
收藏  |  浏览/下载:32/0  |  提交时间:2019/10/09
Incorporating remote sensing and geography information system in hydrological modeling of Kaidu Basin, northwest China 会议论文  OAI收割
2009 WRI World Congress on Computer Science and Information Engineering, CSIE, Los Angeles, CA, United states, 2009
Huang; Yue1; 2; Chen; Xi1; Bao; Anming1; Feng; Xianwei1
收藏  |  浏览/下载:25/0  |  提交时间:2011/08/23
Research on tracking approach to low-flying weak small target near the sea (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Xue X.-C.
收藏  |  浏览/下载:32/0  |  提交时间:2013/03/25
Automatic target detection is very difficult in complicate background of sea and sky because of the clutter caused by waves and clouds nearby the sea-level line. In this paper  in view of the low-flying target near the sea is always above the sea-level line  we can first locate the sea-level line  and neglect the image data beneath the sea-level line. Thus the noise under the sea-level line can be suppressed  and the executive time of target segmentation is also much reduced. A new method is proposed  which first uses neighborhood averaging method to suppress background and enhance targets so as to increase SNR  and then uses the multi-point multi-layer vertical Sobel operator combined with linear least squares fitting to locate the sea-level line  lastly uses the centroid tracking algorithm to detect and track the target. In the experiment  high frame rate and high-resolution digital CCD camera and high performance DSP are applied. Experimental results show that this method can efficiently locate the sea-level line on various conditions of lower contrast  and eliminate the negative impact of the clutter caused by waves and clouds  and capture and track target real-timely and accurately.  
A new spaceborne compression approach for remote sensing imagery (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
作者:  
Xu S.
收藏  |  浏览/下载:25/0  |  提交时间:2013/03/25
After analyzing advantages and disadvantages of these typical encoding methods: SPIHT and VQ  a "DWT+MRLE" approach for spaceborne data compression was proposed in this paper. This approach includes two steps: Discrete Wavelet Transform (DWT) and Modified Run Length Encoding (MRLE). The former used CDF9/7 biorthogonal wavelet filters to powerfully get rid of correlation between pixels in imagery. The later put enlightening information into the lowest bit of some key-position transform coefficients. Consequently  CDF9/7 and MRLE together make hardware platform remain high real-time capability  and help reconstructed images keep good fidelity with PSNR being about 40dB  compared with the original ones. Comparison between experimentations on SPOT4's low-spatial-resolution (10m) imagery and Ikonos2's high-spatial-resolution (1m) imagery  shows this "DWT+MRLE" method having better performance for remote-sensed imagery  especially those of higher resolution. Although inferior to 8:1  Compression Ration (CR) here near 5:1 is greater than France SPOT5's 3:1 and American Ikonos2's 11:2.6 on-board data compression. More important  this method having less computational amount is good for spaceborne capability of real time. The consumed time of different image size is also presented in this paper  based on TI TMSC6416 DSP chip with 600MHz CPU cycle clock.