国家自然科学基金(41175025)

作品数:19被引量:61H指数:4
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相关作者:黄思训李金才彭宇行杜华栋黄斌更多>>
相关机构:解放军理工大学国防科学技术大学怀化学院中国人民解放军理工大学气象海洋学院更多>>
相关期刊:《Chinese Physics B》《Applied Mathematics and Mechanics(English Edition)》《Science Bulletin》《物理学报》更多>>
相关主题:大气波导合成孔径雷达相干斑抑制正则化东印度洋更多>>
相关领域:天文地球电子电信自动化与计算机技术理学更多>>
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Model-based variational fusion for reducing spectral distortion
《Science China(Information Sciences)》2018年第1期263-265,共3页Zeming ZHOU Chaoqian CHEN Yong MENG Biao HU 
supported in part by National Natural Science Foundation of China (Grant Nos. 61473310, 41174164, 41175025);China Meteorological Administration (Grant No. GYHY201306068)
High-resolution remote sensing satellites such as IKONOS,Quick Bird,and Geo Eye-1 usually provide a panchromatic(PAN)band and four multispectral(MS)bands.Pan sharpening is the synthesis of MS images of high spatia...
关键词:Model-based variational fusion reducing spectral distortion 
Sufficient conditions of Rayleigh-Taylor stability and instability in equatorial ionosphere被引量:2
《Applied Mathematics and Mechanics(English Edition)》2016年第2期181-192,共12页Sicheng WANG Sixun HUANG 
Project supported by the National Natural Science Foundation of China(Nos.41575026 and 41175025)
Rayleigh-Taylor (R-T) instability is known as the fundamental mechanism of equatorial plasma bubbles (EPBs). However, the sufficient conditions of R-T instability and stability have not yet been derived. In the pr...
关键词:Rayleigh-Taylor (R-T) instability sufficient condition equatorial iono-sphere variational approach 
Atmospheric duct estimation from multi-source radar sea clutter returns: theoretical framework and preliminary numerical results被引量:1
《Chinese Science Bulletin》2014年第34期4899-4906,共8页Xiaofeng Zhao Dongxiao Wang Sixun Huang 
supported by the National Natural Science Foundation of China(41175025);the National Basic Research Program of China(2011CB403500)
Refractivity from clutter(RFC) technique estimates lower atmospheric refractivity from radar sea clutter returns. An important issue of RFC is how to make the estimate more robust. Rather than using only single beam r...
关键词:海杂波 估计 计算结果 雷达 大气波导 框架 大气折射率 伴随方法 
Variational regularization method of solving the Cauchy problem for Laplace's equation: Innovation of the Grad–Shafranov(GS) reconstruction被引量:4
《Chinese Physics B》2014年第10期650-655,共6页颜冰 黄思训 
Project supported by the National Natural Science Foundation of China(Grant No.41175025)
The simplified linear model of Grad-Shafranov (GS) reconstruction can be reformulated into an inverse boundary value problem of Laplace's equation. Therefore, in this paper we focus on the method of solving the inv...
关键词:Grad-Shafranov reconstruction variational regularization method Cauchy problem 
Ocean internal waves interpreted as oscillation travelling waves in consideration of ocean dissipation
《Chinese Physics B》2014年第5期52-59,共8页姜祝辉 黄思训 游小宝 肖义国 
Project supported by the High Resolution Earth Observation Major Special Project of Youth Innovation Foundation of China(Grant No.GFZX04060103-3-12);the National Natural Science Foundation of China(Grant No.41175025)
Most studies of the synthetic aperture radar remote sensing of ocean internal waves are based on the solitary wave solutions of the Korteweg-de Vries (KdV) equation, and the dissipative term in the KdV equation is n...
关键词:synthetic aperture radar ocean internal waves oscillation travelling wave Korteweg-de Vriesequation 
Statistical estimations of atmospheric duct over the South China Sea and the Tropical Eastern Indian Ocean被引量:16
《Chinese Science Bulletin》2013年第23期2794-2797,共4页ZHAO XiaoFeng WANG DongXiao HUANG SiXun HUANG Ke CHEN Ju 
supported by the National Basic Research Program of China(2011CB403504);the National Natural Science Foundation of China(41175025)
In 2010-2012 spring, atmospheric duct observation experiments were performed throughout three open cruises over the South China Sea and the Tropical Eastern Indian Ocean. The data used for ducting analysis were measur...
关键词:大气波导 统计估计 东印度洋 中国南海 热带 架空管道 数据质量控制 观测实验 
南中国海及热带东印度洋大气波导统计分析被引量:3
《科学通报》2013年第27期2862-2862,共1页赵小峰 王东晓 黄思训 黄科 陈举 
国家重点基础研究发展计划(2011CB403504);国家自然科学基金(41175025)资助
大气波导是一种异常大气折射结构,它的出现能够改变电磁波传播路径及空间能量分布,从而影响雷达等无线电电磁通讯系统的探测性能,如实现甫达的超视距探测,
关键词:大气波导 统计分析 东印度洋 南中国海 大气 热带 空间能量分布 超视距探测 
多参数背景场误差模型在散射计资料台风风场反演中的应用被引量:2
《物理学报》2013年第15期575-581,共7页钟剑 费建芳 黄思训 黄小刚 程小平 
国家公益性行业专项(批准号:GYHY201106004);国家自然科学基金(批准号:41175025;41005029;41105012;41105065)资助的课题~~
利用散射计资料反演海面风场时,台风区域普遍存在降雨使得风场反演误差很大,引入降雨地球物理模型函数(GMF+Rain)及多解方案(MSS),结合二维变分(2DVAR)模糊去除思想风速反演误差很大程度减小,但风向反演误差仍有待进一步改善,如何进一...
关键词:台风风场反演 二维变分 多参数误差模型 散射计资料 
基于图像熵的各向异性扩散相干斑噪声抑制被引量:10
《物理学报》2013年第9期574-583,共10页李金才 马自辉 彭宇行 黄斌 
国家重点基础研究发展计划(973计划)(批准号:2011CB302601);国家高技术研究发展计划(863计划)(批准号:2011AA01A202);国家自然科学基金(批准号:41175025;41105063;60803039;60970033)资助的课题~~
本文提出了一种基于图像熵的各向异性扩散滤波方法.该方法使用图像熵作为边缘检测算子,避免了由于均值和方差等统计量的估计带来的误差,提高了边缘检测能力.试验结果表明该方法能够获得比传统方法更好的相干斑噪声抑制效果.
关键词:相干斑抑制 各向异性扩散 图像熵 合成孔径雷达 
大气波导条件下雷达海杂波功率仿真被引量:6
《物理学报》2013年第9期540-546,共7页赵小峰 黄思训 
国家自然科学基金(批准号:41175025;41105012;41275113)资助的课题~~
考虑近海面大气折射率垂直梯度的变化,采用曲面波频谱估计方法(CWSE)计算掠射角,并结合修正的GIT海表反射率模型和雷达距离方程对大气波导条件下雷达海杂波功率进行仿真,最后通过数值实验及与实测数据比较,验证了CWSE方法的可行性.
关键词:大气波导 雷达海杂波 曲面波频谱估计 
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