国家自然科学基金(61271391)

作品数:11被引量:61H指数:5
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相关作者:许稼彭应宁龙腾孟藏珍杨健更多>>
相关机构:北京理工大学清华大学中国人民解放军特拉华大学更多>>
相关期刊:《雷达学报(中英文)》《Chinese Journal of Acoustics》《航空学报》《Science China Earth Sciences》更多>>
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Automatic target recognition method for inverse synthetic aperture sonar imaging被引量:2
《Chinese Journal of Acoustics》2018年第4期463-476,共14页ZHU Zhaotong PENG Shibao XU Jia XU Xiaomei 
supported by the National Natural Science Foundation of China(41676024,41376040,41276039,61271391,61671061);the Post-doctor Foundation of Shaanxi Province(2017BSHQYXMZZ04);the Post-doctor Foundation of the 705th Research Institute,CSIC
To address the randomness of target aspect angle and the incompleteness of observed target in inverse synthetic aperture sonar(ISAS) imaging,a method for target recognition is proposed based on topology vector feat...
关键词:Automatic target recognition method for inverse synthetic aperture sonar imaging 
水下目标亮点拓扑特征提取及自动识别方法被引量:8
《声学学报》2018年第2期154-162,共9页朱兆彤 彭石宝 许稼 许肖梅 
国家自然科学基金项目(41676024,41276039,61271391,61671061);陕西省博士后科研项目(2017BSHQYXMZZ04);中国船舶重工集团公司第七○五研究所博士后基金项目资助
针对水下目标逆合成孔径声呐(Inverse Synthetic Aperture Sonar,ISAS)图像识别问题中观测角度随机多变,目标结构相互遮挡问题,提出一种基于多亮点拓扑矢量特征的ISAS水下目标识别方法。通过分析ISAS成像过程中散射点位置由三维空间...
关键词:水下目标 类型识别 识别率 拓扑特征 特征向量 自动识别 
Underwater sonar target imaging via compressed sensing with M sequences被引量:1
《Science China Earth Sciences》2016年第12期111-120,共10页Huichen YAN Jia XU Xiang-Gen XIA Xudong ZHANG Teng LONG 
supported in part by National Natural Science Foundation of China (Grant No. 61271391);111 Project of China Ministry of Education (MOE) (Grant No. B14010);New Century Excellent Talents Supporting Plan of China MOE (Grant No. NCET-13-0049);Ministry Research Foundation (Grant No. 9140A21050114HT05338);Outstanding Youth Teacher Training Plan of BIT (Grant No. BIT-JC-201205)
Due to the low sound propagation speed, the tradeoff between high azimuth resolution and wide imaging swath has severely limited the application of sonar underwater target imaging. However, based on compressed sensing...
关键词:SONAR high-resolution imaging compressed sensing M sequence coherence parameter restricted isometry property 
雷达高机动目标长时间混合积累快速算法被引量:6
《信号处理》2015年第12期1547-1553,共7页周煦 许稼 钱李昌 龙腾 
国家自然科学基金(61271391);长江学者奖励计划(T2012122);北京理工大学杰出中青年教师发展计划(NCET-13-0049);教育部新世纪优秀人才支持计划资助课题(BIT-JC-201205);部委基金项目(9140A21050114HT05338)
长时间积累是提高雷达微弱目标检测性能的有效方法,但高速高机动目标的跨距离单元和跨多普勒单元现象严重限制了积累性能。为此,本文提出了一种长时间混合积累的新方法,将积累时间划分为若干个子孔径,在子孔径内同一个距离单元相参积累...
关键词:混合积累 相参积累 非相参积累 启发式搜索 高机动目标 
Joint number and DOA estimation via the eigen-beam mCapon method for closely spaced sources被引量:3
《Science China Chemistry》2015年第12期213-215,共3页GAO Yang XU Jia JIA Xin 
supported by Program for New Century Excellent Talents in University of Ministry of Education of China(Grant No.NCET-13-0049);National Natural Science Foundation of China(Grant No.61271391);China Ministry Research Foundation(Grant No.9140A21050114HT05338)
Dear editor,The source number and direction of arrival (DOA) estimation are two important subjects in array sig- nal processing [1,2]. Many algorithms for estimating these parameters have been proposed in the past d...
关键词:估计方法 DOA 特征 接头 
MIMO-SAR waveforms separation based on virtual polarization filter被引量:4
《Science China(Information Sciences)》2015年第4期21-32,共12页MENG CangZhen XU Jia XIA Xiang-Gen LIU Feng LONG Teng MAO ErKe YANG Jian PENG YingNing 
supported by National Natural Science Foundation of China (Grant No. 61271391);Project "111" of the Ministry of Education (MOE) of China;New Century Excellent Talents Supporting Plan of MOE of China (Grant No. NCET-13-0049);Outstanding Youth Teacher Training Plan of Beijing Institute of Technology (Grant No. BIT-JC-201205);supported by Air Force Office of Scientific Research (AFOSR) (Grant No. FA9550-12-1-0055)
The unwanted coupling exists inevitably among multiple orthogonal waveforms in a same frequen- cy area for multiple-input and multiple-output synthetic aperture radar (MIMO-SAR). In this paper, a new polarized MIMO-...
关键词:multiple-input and multiple-output synthetic aperture radar (MIMO-SAR) orthogonal waveforms virtual polarization filter (VPF) particle swarm optimizer (PSO) 
Wideband underwater sonar imaging via compressed sensing with scaling effect compensation被引量:3
《Science China(Information Sciences)》2015年第2期64-74,共11页YAN HuiChen XU Jia XIA Xiang-Gen LIU Feng PENG ShiBao ZHANG XuDong LONG Teng 
supported by National Natural Science Foundation of China(Grant No.61271391);Postdoctor Foundation(Grant No.2013M530626);Beijing Municipal Natural Science Foundation(Grant No.4122038)
By exploiting the sparsity of the imaging scene, compressed sensing(CS) imaging may provide an effective solution to cope with the tradeoff of high azimuth resolution and wide swath in synthetic aperture sonar imagi...
关键词:compressed sensing sonar imaging wideband signal scaling effect modified l1 minimization 
基于接收滤波器设计的MIMO-SAR波形耦合抑制被引量:5
《电波科学学报》2014年第3期401-407,423,共8页孟藏珍 许稼 花良发 杨健 彭应宁 
国家自然科学基金资助项目(No.61271391,No.61201451)
针对同频正交编码信号发射波形的多输入多输出合成孔径雷达(Multiple-input and Multiple-output Synthesis Aperture Radar,MIMO-SAR)因波形互耦产生的互相关噪声降低成像质量问题,提出了基于辅助变量设计接收滤波器的方法,通过失配处...
关键词:MIMO-SAR 正交波形 互相关噪声 失配处理 
空时频检测前聚焦雷达信号处理方法被引量:25
《雷达学报(中英文)》2014年第2期129-141,共13页许稼 彭应宁 夏香根 龙腾 毛二可 
国家自然科学基金(61271391);部委预研基金(9140A07021012JW0101);航天创新科技基金;教育部“111”引智计划;北京理工大学杰出中青年教师发展计划;教育部新世纪优秀人才支持计划资助课题
针对复杂电磁环境中现代雷达对高速、高机动、隐身目标探测的迫切需求,该文基于空时频域信号建模,提出多维联合相参积累的空时频检测前聚焦(STF-FBD)雷达信号处理新理论和新方法。STF-FBD可有效抑制强杂波和有源干扰,克服尺度伸缩、孔...
关键词:雷达信号处理 微弱目标 相参积累 检测前聚焦 检测前跟踪 杂波抑制 Radon-Fourier变换(RFT) 
基于Clean处理的MIMO-SAR正交波形分离被引量:7
《电子与信息学报》2013年第12期2809-2814,共6页孟藏珍 许稼 王力宝 杨健 彭应宁 
国家自然科学基金(61271391,61201451)资助课题
因为同频完全正交波形并不存在,基于同频正交编码信号发射波形的多输入多输出合成孔径雷达(MIMOSAR)因波形间互耦产生的互相关噪声将严重降低成像质量。针对此问题,该文提出基于Clean处理分离多正交波形方法,逐步获取单波形回波,并分析...
关键词:MIMO—SAR 正交波形 互相关噪声 Clean处理 
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