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Introductory remote sensing.: digital image processing and applications

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remote sensing.analysis of surface suspended sediment concentration in the Changjiang Estuary

2000年

作者： Gibson Paul.

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Progress in Natural Science:Materials International 1999年第6期 41-47页

作者：何青恽才兴时伟荣 China East China Normal University Shanghai 200062 State Key Laboratory of Estuarine & Coastal Research

Key problem for studying river bed evolution of the Changjiang Estuary is the mechanism of sediment transport. This paper, based on an analysis of remotely sensed data, presents the principles of spatial distribution and variation of surface suspended sediment concentration in the Changjiang Estuary, as well as their relation to the vertical distribution of sediment concentration, which provides a scientific basis for the regulation of deepwater navigation channel in the Changjiang Estuary.

关键词： Changjiang Estuary suspended sediment concentration remote sensing.

Research of optimizing the microwave wide band blackbody calibration target

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Journal of Systems Engineering and Electronics 2009年第1期20卷 6-12页

作者： Nian Feng Yang Yujie Wang Wei National Key Laboratory of Metrology and Calibration Technology Beijing 100854 P. R. China Beijing Inst. of Radio Metrology & Measurement Beijing 100854 P. R. China

The blackbody calibration targets applied for microwave radiometer＇s prelaunch calibration are optimized with its electromagnetic and thermal characteristics. Based on the method of emissivity optimization with radar cross section （RCS） simulation and the method of subgrid finite difference time domain （FDTD）, the following design rules are summarized： that the round wedge is better than the square one, the best ratio from height to bottom radius is 4：1, for wide band calibration, the multilayer absorbing material coating is efficient to increase the emissivity, and the gradual thickness absorbing material coating is helpful to guarantee the uniform distribution of surface temperature even as it keeps a higher emissivity. Finally following the above conclusions, a new type of blackbody calibration target with the cellular array is preferred to improve the uniformity of polarization, which will increase the performance of the calibration targets further.

关键词： blackbody calibration target microwave radiometer remote sensing.

Spatial and Temporal Dynamics of Lakes in Nam Co Basin, 1991–2011

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Journal of Earth Science 2016年第1期27卷 130-138页

作者： Xu Wang Aiguo Zhou Ziyong Sun School of Public Administration China University of Geosciences Laboratory of Geographical Environment and National Park China University of Geosciences School of Environmental Studies China University of Geosciences State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences Laboratory of Basin Hydrology and Wetland Eco-Restoration China University of Geosciences

Lakes in Tibet Plateau with little effects of human activities serve as important indicators of climate change. This study analysed remote sensing.data and long term climate variables to examine the hydrological response of lakes in Nam Co Basin. The area changes of lakes were extracted by Landsat TM/ETM＋ and analysed by SRTM 3 DEM. And the ICESat elevation data between 2003 and 2009 were used to observe the lake level of the Nam Co Lake. The results show that the number of new formed glacier lakes increased by 36% and the area of glacier lakes increased by 36.7%（0.97 km^2） from 1991 to 2011. At the same time, the surface area of the Nam Co Lake expanded by 3.71%（72.64 km^2） of the original size in 1991, with a tendency value of 3.63 km^2 per year. The lake level of the Nam Co Lake shows an increase tendency of 0.24 m per year during 2003-2009. These variations appear to be related to an increase in mean annual temperature of 0.06 oC per year, and an increase in annual precipitation of 2.1 mm per year in summer in the last two decades. The increased number of lakes and increased area of glacial lakes reached a peak at an altitude of 5 500-5 600 m a.s.l.. The number of new formed glacier lakes and the area of glacier lakes tend to higher altitudes. Climate change has an important impact on the variation of the glacier lakes and the Nam Co Lake.

关键词： glacier lake Nam Co Basin remote sensing.

Earth observation of global change : the role of satellite remote sensing.in monitoring the global environment /

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Hyperspectral Imaging: Techniques for Spectral Detection and Classification 2003

2008年

作者：匿名

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Research Activities on Space Electronics in CAST

2003年

作者： Chein-I Chang (auth.)

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Journal of Systems Engineering and Electronics 1993年第3期4卷 2-6页

作者： Chen Shiping and Wang YifeiXi’an Institute of Space Radio Technology, CAST MAS, P.O. Box 165. Xi’an 710000, China Xi'an Institute of Space Radio Technology CAST MAS P.O. Box 165. Xi'an 710000 China

This paper gives a brief review of the research activities on space electronics done in Chinese Academy of Space Technology (CAST), especially in Xi'an Institute of Space Radio Technology (XISRT). XISRT undertakes the development and manufacturing of space borne electronic equipment and their relevant ground TT&C in CAST. This paper deals with satellite communication and remote sensing.

关键词： Research activities Space electronics CAST Satellite communication remote sensing.