国家自然科学基金(61225005)

作品数：12被引量：49H指数：5
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相关作者：孙文峰钱李昌许稼彭应宁更多>>
相关机构：空军预警学院清华大学北京理工大学更多>>
相关期刊：《Journal of Beijing Institute of Technology》《Science China Earth Sciences》《航空学报》《Science China(Information Sciences)》更多>>
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Ultra-flat dispersion in an integrated waveguide with five and six zero-dispersion wavelengths for mid-infrared photonics被引量：3
《Photonics Research》2019年第11期1279-1286,共8页Yuhao Guo Zeinab Jafari Lijuan Xu Changjing Bao Peicheng Liao Guifang Li Anuradha M.Agarwal Lionel C.Kimerling Jurgen Michel Alan E.Willner Lin Zhang 
National Natural Science Foundation of China(61775164,61225005,61775165)
We propose a new type of dispersion flattening technology, which can generate an ultra-flat group velocity dispersion profile with five and six zero-dispersion wavelengths(ZDWs). The dispersion value varies from-0.15 ...
关键词：WAVEGUIDE dispersion FLAT 
Simulation and Analysis of the Impacts of Anisotropic Ionospheric Scintallition on Geosynchronous Synthetic Aperture Radar
《Journal of Beijing Institute of Technology》2017年第1期115-120,共6页Yinhui Xu Xichao Dong Cheng Hu Yuanhao Li 
Supported by the National Natural Science Foundation of China(61225005,61427802,61471038,61120106004);Chang Jiang Scholars Program(T2012122);111 project of China(B14010);Beijing Higher Education Young Elite Teacher Project(YETP1168)
The impacts of ionospheric scintillation on geosynchronous synthetic aperture radar（GEO SAR）focusing is studied based on the multiple phase screen（MPS）theory.The power spectrum density of electron irregularities i...
关键词：ANISOTROPY FOCUSING geosynchronous synthetic aperture radar （GEO SAR） ionospher-ic scintillation multiple phase screen 
Recent progress in Bistatic SAR with illuminators of opportunity
《Science China(Technological Sciences)》2016年第12期1965-1967,共3页ZENG Tao ZHANG Tian TIAN Wei Ming HU Cheng 
supported by the National Natural Science Foundation of China(Grant Nos.61120106004,61427802,61225005,61601031);ChangJiang Scholars Program(Grant No.T2012122);111 project of China(Grant No.B14010)
Bistatic SAR（Bi SAR）with illuminators of opportunity is a kind of flexible SAR system that consists of non-cooperative transmitters and a stationary or moving receiver,as Figure 1shows.In recent years,notable effort...
关键词：opportunity stationary receiver navigation potentially cooperative iterative Figure subsidence utilized 
Feasibility study of inclined geosynchronous SAR focusing using Beidou IGSO signals被引量：5
《Science China Earth Sciences》2016年第12期240-242,共3页Xichao DONG Cheng HU Weiming TIAN Tian ZHANG Yuanhao LI 
supported by National Natural Science Foundation of China (Grant Nos. 61225005, 61501032, 61120106004)
Dear editor,Geosynchronous synthetic aperture radar(GEO SAR)[1,2]has an inclined geosynchronous orbit of around 36000 km,which leads to its short revisit time of around 24 hours and a wide coverage of up to approximat...
关键词：倾斜地球同步轨道 SAR 北斗 聚焦 信号 
High-precision deformation monitoring algorithm for GBSAR system: rail determination phase error compensation被引量：13
《Science China(Information Sciences)》2016年第8期200-215,共16页Cheng HU Mao ZHU Tao ZENG Weiming TIAN Cong MAO 
supported by National Natural Science Foundation of China (Grant Nos. 61120106004, 61225005, 61471038 and 61427802);Chang Jiang Scholars Program (Grant No. T2012122);111 Project of China (Grant No. B14010)
In recent years, the repeat-pass GBSAR （ground based synthetic aperture radar） system has demon- strated its capacity to acquire deformation. Nevertheless, in a variety of applications, it needs to measure the defor...
关键词：permanent scatterer （PS） synthetic aperture radar （SAR） ground-based SAR deformation mon-itoring RADAR 
Impacts of ionospheric scintillation on geosynchronous SAR focusing: preliminary experiments and analysis被引量：8
《Science China(Information Sciences)》2015年第10期186-188,共3页LI YuanHao HU Cheng DONG XiChao TIAN WeiMing LONG Teng 
supported by National Natural Science Foundation of China(Grant Nos.61225005,61471038,61427802,61120106004);Beijing Higher Education Young Elite Teacher Project(Grant No.YETP1168)
Dear editor, Geosynchronous Synthetic Aperture Radar （GEO SAR） has significant potential when applied to hazard and disaster monitoring because of its short revisit time of approximately 24 h and its wide coverage o...
关键词：SAR Impacts of ionospheric scintillation on geosynchronous SAR focusing GEO PSLR Figure preliminary experiments and analysis than 
GNSS-based BiSAR imaging using modified range migration algorithm被引量：2
《Science China(Information Sciences)》2015年第8期139-151,共13页ZENG Tao LIU FeiFeng ANTONIOU Michail CHERNIAKOV Mikhail 
supported by National Natural Science Foundation of China(Grant Nos.61120106004,61225005,61427802);Chang Jiang Scholars Program(Grant No.T2012122);‘111’Project of China(Grant No.B14010);Beijing Higher Education Young Elite Teacher Project(Grant No.YETP1168)
This paper proposed a new focusing approach for the bistatic SAR systems with a GNSS （Global Navigation Satellite System） satellite as the transmitter. Because of the long integration time the inherited curvature of...
关键词：GNSS-based BiSAR equivalent slant range model curvature of trajectory two-step processing modified Stolt mapping 
A novel subsidence monitoring technique based on space-surface bistatic differential interferometry using GNSS as transmitters被引量：9
《Science China(Information Sciences)》2015年第6期64-79,共16页ZENG Tao ZHANG Tian TIAN WeiMing HU Cheng 
supported by National Natural Science Foundation of China(Grant Nos.61120106004,61427802,61225005);Chang Jiang Scholars Program(Grant No.T2012122);111 Project of China(Grant No.B14010)
Synthetic Aperture Radar Differential ]nterferometry （DInSAR） technique is an effective tool with large coverage and high spatial accuracy for subsidence monitoring. Nevertheless, the temporal resolution is usually ...
关键词：differential interferometry subsidence monitoring Beidou-2/Compass-2 space-surface bistatic radar differential GPS 
An improved motion compensation method for high resolution UAV SAR imaging被引量：6
《Science China(Information Sciences)》2014年第12期105-117,共13页FAN BangKui DING ZeGang GAO WenBin LONG Teng 
supported by National Natural Science Foundation of China(Grant Nos.61370017,61032009,61225005,61120106004)
The polynomial and sinusoidal motion errors always exist in the unmanned aero vehicle （UAV） SAR due to the small size and low velocity of the platform, causing serious spectrum compressing/stretching and significant...
关键词：motion error unmanned aero vehicle （UAV） SAR motion compensation （MOCO） range walkcorrection （RWC） high resolution 
Improved eigenanalysis canceler based on data-independent clutter subspace estimation for space-time adaptive processing被引量：1
《Science China(Information Sciences)》2013年第10期1-10,共10页LONG Teng LIU YongXu YANG XiaoPeng SUN YuZe 
supported in part by National Nature Science Foundation of China(Grant Nos.61001198,61225005,61032009)
The eigenanalysis canceler （EC） method which is suitable for nonhomogeneous clutter can suppress clutter effectively by discarding the eigenvectors of small eigenvalues, which is a well-known subspace-based space-ti...
关键词：space-time adaptive processing airborne radar prolate spheroidal wave function eigenanalysiscanceler clutter suppression 
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