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International Applied Computational Electromagnetics Society Symposium in China

作者： Jingke Zhang Dahai Dai Zongfeng Qi Yonghu Zeng Shunping Xiao State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System College of Electronic Science and Engineering National University of Defense Technology

ISBN: (纸本)9781509043118

Based on three-channel SAR-GMTI system, the velocity and location of the deceptive moving target generated by single jammer are studied. Study result shows that both the deceptive stationary target and moving target can be considered as moving target, and the estimated azimuth location which has nothing to do with the setting value is the same as jammer.

关键词： Jamming Azimuth Synthetic aperture radar Radar imaging Antennas Imaging

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Deriving Einstein-Podolsky-Rosen steering inequalities from the few-body Abner Shimony inequalities

arXiv

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arXiv 2018年

作者： Zhou, Jie Meng, Hui-Xian Jiang, Shu-Han Xu, Zhen-Peng Ren, Changliang Su, Hong-Yi Chen, Jing-Ling Theoretical Physics Division Chern Institute of Mathematics Nankai University Tianjin300071 China School of Physics Nankai University Tianjin300071 China Departamento de Física Aplicada Ii Universidad de Sevilla SevillaE-41012 Spain Center for Nanofabrication and System Integration Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing Key Laboratory of Multi-Scale Manufacturing Technology Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Centre for Quantum Technologies National University of Singapore 3 Science Drive 2 Singapore117543 Singapore

For the Abner Shimony (AS) inequalities, the simplest unified forms of directions attaining the maximum quantum violation are investigated. Based on these directions, a family of Einstein-Podolsky-Rosen (EPR) steering inequalities is derived from the AS inequalities in a systematic manner. For these inequalities, the local hidden state (LHS) bounds are strictly less than the local hidden variable (LHV) bounds. This means that the EPR steering is a form of quantum nonlocality strictly weaker than Bell-nonlocality. Copyright © 2018, The Authors. All rights reserved.

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A novel 3-D imaging algorithm for downward-looking MIMO Array SAR 11

A novel 3-D imaging algorithm for downward-looking MIMO Arra...

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11th European Conference on Synthetic Aperture Radar, EUSAR 2016

作者： Liao, Bin Dai, Dahai Xing, Shiqi Pang, Bo Wang, Xuesong School of Electronic Science and Engineering National University of Defense Technology Changsha410073 China State Key Laboratory of Complex Electromagnetics Effects on Eletctronics and Information System National University of Defense Technology Changsha410073 China

Downward-looking MIMO array 3-D synthetic aperture radar is a hot research recently, it overcomes the layover and can acquire more information with the affordable antenna elements. The multiple transmitters and receivers provide a larger degree of freedom, which could be uesd to reduce the pulse repeat frequency, extend the wide-swath or suppress the interferers and so on. However, there are little literates considering the polarization in this new radar system, this paper introduce the polarization in and proposed a Tikhonov regularization algorithm to reconstruct the 3-D images. The simulation results show the proposed algorithm is excel to FFT method with the SNR increase. © VDE VERLAG GMBH · Berlin · Offenbach.

关键词： Synthetic aperture radar

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Correction to: 2021 Taxonomic update of phylum Negarnaviricota (Riboviria: Orthornavirae), including the large orders Bunyavirales and Mononegavirales

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Archives of virology 2021年第12期166卷 3567-3579页

作者： Jens H Kuhn Scott Adkins Bernard R Agwanda Rim Al Kubrusli Sergey V Alkhovsky Gaya K Amarasinghe Tatjana Avšič-Županc María A Ayllón Justin Bahl Anne Balkema-Buschmann Matthew J Ballinger Christopher F Basler Sina Bavari Martin Beer Nicolas Bejerman Andrew J Bennett Dennis A Bente Éric Bergeron Brian H Bird Carol D Blair Kim R Blasdell Dag-Ragnar Blystad Jamie Bojko Wayne B Borth Steven Bradfute Rachel Breyta Thomas Briese Paul A Brown Judith K Brown Ursula J Buchholz Michael J Buchmeier Alexander Bukreyev Felicity Burt Carmen Büttner Charles H Calisher Mengji Cao Inmaculada Casas Kartik Chandran Rémi N Charrel Qi Cheng Yuya Chiaki Marco Chiapello Il-Ryong Choi Marina Ciuffo J Christopher S Clegg Ian Crozier Elena Dal Bó Juan Carlos de la Torre Xavier de Lamballerie Rik L de Swart Humberto Debat Nolwenn M Dheilly Emiliano Di Cicco Nicholas Di Paola Francesco Di Serio Ralf G Dietzgen Michele Digiaro Olga Dolnik Michael A Drebot J Felix Drexler William G Dundon W Paul Duprex Ralf Dürrwald John M Dye Andrew J Easton Hideki Ebihara Toufic Elbeaino Koray Ergünay Hugh W Ferguson Anthony R Fooks Marco Forgia Pierre B H Formenty Jana Fránová Juliana Freitas-Astúa Jingjing Fu Stephanie Fürl Selma Gago-Zachert George Fú Gāo María Laura García Adolfo García-Sastre Aura R Garrison Thomas Gaskin Jean-Paul J Gonzalez Anthony Griffiths Tony L Goldberg Martin H Groschup Stephan Günther Roy A Hall John Hammond Tong Han Jussi Hepojoki Roger Hewson Jiang Hong Ni Hong Seiji Hongo Masayuki Horie John S Hu Tao Hu Holly R Hughes Florian Hüttner Timothy H Hyndman M Ilyas Risto Jalkanen Dàohóng Jiāng Gilda B Jonson Sandra Junglen Fujio Kadono Karia H Kaukinen Michael Kawate Boris Klempa Jonas Klingström Gary Kobinger Igor Koloniuk Hideki Kondō Eugene V Koonin Mart Krupovic Kenji Kubota Gael Kurath Lies Laenen Amy J Lambert Stanley L Langevin Benhur Lee Elliot J Lefkowitz Eric M Leroy Shaorong Li Longhui Li Jiànróng Lǐ Huazhen Liu Igor S Lukashevich Piet Maes William Marciel de Souza Marco Marklewitz Sergio H Marshall Shin-Yi L Marzano Se Integrated Research Facility at Fort Detrick National Institute of Allergy and Infectious Diseases National Institutes of Health Frederick MD USA. kuhnjens@mail.nih.gov. United States Department of Agriculture Agricultural Research Service US Horticultural Research Laboratory Fort Pierce FL USA. Zoology Department National Museums of Kenya Nairobi Kenya. Jomo Kenyatta University of Agriculture & Technology Nairobi Kenya. Division Phytomedicine Faculty of Life Sciences Humboldt-Universität zu Berlin Berlin Germany. D.I. Ivanovsky Institute of Virology of N.F. Gamaleya National Center on Epidemiology and Microbiology of Ministry of Health of Russian Federation Moscow Russia. Department of Pathology and Immunology Washington University School of Medicine St. Louis MO USA. Faculty of Medicine University of Ljubljana Ljubljana Slovenia. Centro de Biotecnología y Genómica de Plantas Universidad Politécnica de Madrid-Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria Campus de Montegancedo Pozuelo de Alarcón Madrid Spain. Departamento de Biotecnología-Biología Vegetal Escuela Técnica Superior de Ingeniería Agronómica Alimentaria y de Biosistemas Universidad Politécnica de Madrid Madrid Spain. Center for Ecology of Infectious Diseases Department of Infectious Diseases Department of Epidemiology and Biostatistics Insitute of Bioinformatics University of Georgia Athens GA USA. Institute of Novel and Emerging Infectious Diseases Friedrich-Loeffler-Institut Federal Research Institute for Animal Health Greifswald-Insel Riems Germany. Department of Biological Sciences Mississippi State University Mississippi State MS USA. Center for Microbial Pathogenesis Institute for Biomedical Sciences Georgia State University Atlanta GA USA. Edge BioInnovation Consulting and Mgt Frederick MD USA. Institute of Diagnostic Virology Friedrich-Loeffler-Institut Greifswald-Insel Riems Germany. UFyMA INTA-CONICET Cordoba Argentina. Genomics and Bioinformatics D

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ECCM Scheme against Dual-jammer Cooperative Jamming Based on Multi-channel Cancellation

ECCM Scheme against Dual-jammer Cooperative Jamming Based on...

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2016 IEEE 13th International Conference on Signal Processing（ICSP2016）

作者： Yemin Liu Shiqi Xing Yongcai Liu Yongzhen Li Xuesong Wang State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System National University of Defense Technology School of Electronic Science Engineering National University of Defense Technology College of science National University of Defense Technology

Countermeasure against cooperative jamming is one of the important subjects in the field of electronic countercountermeasures(ECCM). In the cooperative jamming, the spatial position of each jammer is different, the jamming mode used by each jammer may be diverse, and the traditional antijamming methods are difficult to be effective. Therefore, how to suppress the jamming in different directions from different jammers is the key to solve the problem of cooperative jamming. In view of this situation, an ECCM scheme against dual-jammer cooperative jamming based on multi-channel cancellation is proposed in this paper, which uses the spatial degree of freedom of multi-channel synthetic aperture radar(SAR). This antijamming method is available for different active jamming forms, and has less computation. Theoretical analysis and simulation results verify that the proposed method can effectively counter dual-jammer cooperative jamming.

关键词： Electronic counter-countermeasures Cooperative jamming SAR Anti-jamming Multi-channel cancellation

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A system-of-systems architecture-driven modeling method for combat system effectiveness simulation 2

A system-of-systems architecture-driven modeling method for ...

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2nd Annual IEEE International Symposium on systems Engineering, ISSE 2016

作者： Li, Xiaobo Wang, Weiping Shu, Zhe Zhu, Ning He, Hua Liao, Tianjun College of Information Systems and Management National University of Defense Technology Changsha Hunan410073 China Department of Mathematics and Computer Science University of Antwerp Antwerp2020 Belgium State Key Laboratory of Complex System Simulation Beijing Institute of Systems Engineering Beijing China

ISBN: (纸本)9781509007936

Under the background of system-of-systems (SoS) counterwork, it is more apparent that the simulation modeling of the equipment should be domain-specific, formal, automatic and composable. Current equipment effectiveness simulation modeling approaches are mainly based on the methods and techniques from the modeling and simulation (M&S) community and software engineering community, and they are not capable to satisfy these four requirements systematically. Thus the systems engineering architecture model and domain knowledge should be used to support effectiveness simulation modeling more effectively. In this research, we propose an architecture-driven modeling method which conforms to the principle of architecture-driven development, uses ontology techniques to build equipment SoS architecture model and sub-domain ontology. This method performs architecture driven simulation modeling to realize the transformation from architecture models to simulation model frameworks;employs ontological metamodeling to design domain-specific modeling languages (DSML) based on the comprehensive usage of architecture models, sub-domain ontologies and M&S formalisms;integrates domain-specific simulation models from various domains using the model framework, and supports the composable development of simulation applications. © 2016 IEEE.

关键词： system of systems

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On the performance comparisons of several sparse reconstruction algorithms

On the performance comparisons of several sparse reconstruct...

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Progress in Electromagnetic Research Symposium (PIERS)

作者： Dou Sun Shiqi Xing Yongzhen Li Dahai Dai Bo Pang State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System National University of Defense Technology Changsha China College of Electronic Science and Engineering National University of Defense Technology Changsha China

ISBN: (纸本)9781509060948

It is hard to choose one appropriate sparse reconstruction algorithm from multiple existing algorithms in different occasions. Being aware of this difficulty, four typical sparse reconstruction algorithms are studied to present comprehensive performance evaluations in terms of reconstruction accuracy, super-resolution ability and noise immunity, and it is found that the BCS algorithm performs best in noise immunity, while the Lp-norm algorithm has an outstanding performance in super-resolution ability.

关键词： Signal resolution Signal processing algorithms Image resolution Bayes methods Signal to noise ratio Compressed sensing Optimization

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A Novel Barrage Repeater Jamming against SAR-GMTI

A Novel Barrage Repeater Jamming against SAR-GMTI

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European Conference on Antennas and Propagation

作者： Jingke Zhang Dahai Dai Shiqi Xing Shunping Xiao Bo Pang State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System National University of Defense Technology Changsha China College of Electronic Science and Engineering National University of Defense Technology Changsha China

ISBN: (纸本)9781509022342

Synthetic aperture radar ground moving target indication (SAR-GMTI) has been extensively used in the battle field information acquiring. In this paper, a barrage repeater jamming against SAR-GMTI is proposed. This method separates the intercepted radar signal into several equal segments and reradiates them back to the radar in a rearranged order. The essence of the method is that the separation number and the rearranged order are random between each pulse. The randomicity leads to a barrage jamming in SAR images which cannot be cancelled by displace phase-center antenna (DPCA) processing. Simulation results are presented to illustrate the validity of the proposed method.

关键词： synthetic aperture radar ground moving target indication (SAR-GMTI) displaced phase-center antenna (DPCA) random pulse separation and rearrangement repeater jamming

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Optimization of carbon fiber bracket of clamping locking device for magnetically suspended flywheel

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Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis 2016年第4期36卷 708-715页

作者： Liu, Qiang Wu, Dengyun Fang, Jiancheng Fan, Yahong School of Mechanical Engineering Beijing Institute of Petrochemical Technology Beijing102617 China Beijing Institute of Control Engineering Beijing100190 China Key Laboratory of Inertial Technology Beihang University Beijing100191 China National Defense Key Science Laboratory of Novel Inertial Instrument & Navigation System Technology Beihang University Beijing100191 China

A novel optimization method was presented according to the integral carbon fiber bracket of the clamping locking device for a magnetically suspended flywheel. To be equivalent to the cantilever beam model, static and dynamic analyses were performed for the carbon fiber bracket. Its five mechanics performances were obtained, including the maximum interference friction force, locking/unlocking force, the maximum bending stress and first resonance frequency. Sensitivity analysis of the carbon fiber bracket was carried out based on the finite element method. According to the analysis results, two groups of mutually independent structure parameters were obtained. From this, two parts of the carbon fiber bracket were separately optimized. The results show that the mass of the bracket has a minimum of 60.5 g corresponding to 12 slices, which is 64% less than the initial mass of 170 g. Based on optimal results, a locking device was manufactured and its protective effect for the magnetically suspended flywheel was verified by swept-sine vibration and random vibration. The verification shows that the maximum displacement between the stator and rotor is 50 μm, which is less than the flywheel system protective gap of 200 μm. This indicates that the locking device can effectively carry out the locking protection function for the flywheel system. © 2016, Editorial Department of JVMD. All right reserved.

关键词： Finite element method

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An energy-efficient design for multihop relay network adopting CC-HARQ scheme

An energy-efficient design for multihop relay network adopti...

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International Conference on Wireless Communications and Signal Processing (WCSP)

作者： Junmei Han Songhu Ge Yong Xi Jibo Wei School of Electronic Science and Computer Engineering National University of Defense Technology Changsha Hunan National Key Laboratory for Vessel Integrated Power System Technology Naval University of China Engineering Wuhan China

ISBN: (纸本)9781509028610

This paper investigates the energy-efficient design of a multihop relay network adopting the Chase Combining based Hybrid Automatic Repeat reQuest (CC-HARQ) scheme with sum power constraint from a cross-layer perspective. We aim at maximizing the energy efficiency (EE) in the multihop relay network by jointly optimizing the payload length and average transmission energy per bit over all hops, with no limitation on the total number of (re)transmissions times. The theoretical findings are verified by simulations and the impacts of various parameters, e.g., the modulation and coding scheme (MCS) levels, channel gains and transmission distance, on EE are studied in detail. The results demonstrate that significant energy saving can be achieved by the proposed joint optimum algorithm.

关键词： Spread spectrum communication Relay networks (telecommunications) Payloads Frequency modulation Signal to noise ratio

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