作者: 张敏,徐栋 (山东管理学院机电学院;北京理工大学信息与电子学院)
出处: 计算机应用与软件 2018 第35卷 第3期 P247-252
关键词: 局部一致性;信息熵;Relief算法;特征加权
摘要: 为了改善传统Relief算法适应性和鲁棒性差的缺陷,融合间距最大化、信息熵和分类局部一致性,构造了新的间距最大化目标函数,并进一步对目标函数进行优化,得到一些新的理论结果。在此基础上提出了新的基于两类数据的Relief特征加权算法LIE-Relief-T(Local consistency info ...
作者: 唐波1;盛新庆2;金从军3;赵小阳4; (1北京科技大学计算机与通信工程学院;2北京理工大学信息与电子学院电磁仿真中心;3北京仿真中心;4中国人民解放军96610部队)
出处: 系统工程与电子技术 2018 第40卷 第4期 P927-933
关键词: 三元组;射频仿真系统;耦合;仿真精度
摘要: 三元组射频仿真是电子系统进行外场试验前的必要步骤,仿真的有效性取决于电子系统在室内仿真与外场试验下的响应一致性。研究了耦合效应对三元组射频仿真的影响。通过理论分析与全波电磁计算,分析了发射端三元组单元间的耦合、接收端单元间耦合对仿真的影响。结果表明,当接收端方向图在三元组邻域内均匀时,发射端的单元间 ...
作者: 李明迅1;牟进超2;郭大路1;乔海东1;马朝辉1;吕昕1; (1北京理工大学信息与电子学院毫米波太赫兹北京市重点实验室;2航天长征火箭技术有限公司)
出处: 红外与毫米波学报 2018 第37卷 第6期 P717-722
关键词: 太赫兹准光探测器;直接检波;外差探测;太赫兹成像
摘要: 设计了一款太赫兹准光探测器,该探测器主要由砷化镓肖特基二极管芯片以及高阻硅透镜组成.为了减小所设计芯片的欧姆损耗,将天线图案生长在了半绝缘砷化镓层上.在335~350GHz频率范围内,准光探测器的实测电压响应率为1360~1650V/W,双边带变频损耗为10.6~12.5dB.对应估算的等效噪声功率 ...
作者: Zheyi Fan, Shuqin Weng, Jiao Jiang, Yixuan Zhu,Zhiw en Liu (School of Information and Electronics,Beijing Institute of Technology)
出处: Journal of Beijing Institute of Technology 2018 第27卷 第1期 P51-57
关键词: object;tracking;abrupt;motion;particle;filter;sparse;representation;nonlinear;resampling
摘要: Object tracking with abrupt motion is an important research topic and has attracted wide attention.To obtain accurate tracking results,an improved par ...
作者: Min Xie, Shuang Zhao, Xiongjun Fu, Tianyu Zhang,Kaiqiang Liu (School of Information and Electronics,Beijing Institute of Technology)
出处: Journal of Beijing Institute of Technology 2018 第27卷 第1期 P43-50
关键词: chaff;jamming;anti-jamming;grey;relational;analysis;radar
摘要: A modified chaff jamming recognition method of radar is investigated using grey relational analysis( GRA) based on the difference in echo correlation ...
作者: Zheren LONG,Hua WANG,Nan WU,Jingming KUANG (School of Information and Electronics, Beijing Institute of Technology)
出处: Science China(Information Sciences) 2018 第61卷 第4期 P151-163
关键词: nonlinear;satellite;channel;turbo;equalization;joint;Gaussian;soft;interference;cancellation-minimum;mean;square;error;(SIC-MMSE);linear;minimum;mean;square;error;(LMMSE)
摘要: The nonlinear distortion of wideband signal due to the filtering and efficiently operated high power amplifiers limits the performance of satellite co ...
作者: Lu FAN,Lijuan JIA,Ran TAO,Yue WANG (School of Information and Electronics,Beijing Institute of Technology)
出处: Science China(Information Sciences) 2018 第61卷 第11期 P193-207
关键词: distributed;parameter;estimation;normalized;least-mean;squares;bias-compensated;algorithms
摘要: In this paper, we study the problem of distributed normalized least-mean squares(NLMS) estimation over multi-agent networks, where all nodes collabora ...
作者: Yougen Xu,Ying Lu,Yulin Huang,Zhiwen Liu (School of Information and Electronics,Beijing Institute of Technology)
出处: Journal of Beijing Institute of Technology 2018 第27卷 第2期 P169-175
关键词: array;signal;processing;adaptive;array;direction;finding;sparse;representation
摘要: The problem of two-dimensional direction finding is approached by using a multi-layer Lshaped array. The proposed method is based on two sequential sp ...
作者: Cheng HU,Wenqing LI,Rui WANG,Yuanhao LI,Weidong LI,Tianran ZHANG (School of Information and Electronics,Beijing Institute of Technology)
出处: Science China(Information Sciences) 2018 第61卷 第10期 P279-281
关键词: 地理雷达;信息技术;发展现状;技术创新
摘要: Dear editor,As most migratory insects are nocturnal, the entomological radar with the advantage of all-time and all-weather application is the most ef ...
作者: Bin LI,Zesong FEI (School of Information and Electronics, Beijing Institute of Technology)
出处: Science China(Information Sciences) 2018 第61卷 第2期 P65-76
关键词: secure;communication;wireless;power;transfer;power;splitting;Bernstein-type;inequality;robust;beamforming
摘要: In this paper, we consider a system supporting simultaneous wireless information and power transfer(SWIPT), where the transmitter delivers private mes ...