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IFCEM based recognition method for target with interval-overlapped hybrid attributes

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Journal of Systems Engineering and Electronics 2023年第2期34卷 408-421页

作者： GUAN Xin LI Shuangming SUN Guidong WANG Haibin Naval Aviation University Yantai 264001China unit 92941 of pla Huludao 125001China Unit 32801 of PLA Beijing 100082China

When the attributes of unknown targets are not just numerical attributes,but hybrid attributes containing linguistic attributes,the existing recognition methods are not effective.In addition,it is more difficult to identify the unknown targets densely distributed in the feature space,especially when there is interval overlap between attribute measurements of different target classes.To address these problems,a novel method based on intuitionistic fuzzy comprehensive evaluation model(IFCEM)is proposed.For numerical attributes,targets in the database are divided into individual classes and overlapping classes,and for linguistic attributes,continuous interval-valued linguistic term set(CIVLTS)is used to describe target characteristic.A cloud modelbased method and an area-based method are proposed to obtain intuitionistic fuzzy decision information of query target on numerical attributes and linguistic attributes respectively.An improved inverse weighted kernel fuzzy c-means(IWK-FCM)algorithm is proposed for solution of attribute weight vector.The possibility matrix is applied to determine the identity and category of query target.Finally,a case study composed of parameter sensitivity analysis,recognition accuracy analysis.and comparison with other methods,is taken to verify the superiority of the proposed method.

关键词： intuitionistic fuzzy comprehensive evaluation model(IFCEM) interval overlapping cloud model area-based method inverse weighted kernel fuzzy c-means(IWK-FCM)

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电力信息物理系统易损性分析方法

北京理工大学学报 2022年第4期42卷 374-382页

作者：陈亚莎冯富强欧渊石根柱严雪飞中国人民解放军32801部队北京100082

针对电力信息物理系统(CPS)体系复杂、网络耦合、易损性分析困难这一现状,以近年来国内外电力系统毁伤相关研究成果为基础,构建了电力CPS的毁伤树模型.根据电力CPS节点重要性与故障级联毁伤特性,提出了一种基于节点重要性的电力CPS易损... 详细信息

针对电力信息物理系统(CPS)体系复杂、网络耦合、易损性分析困难这一现状,以近年来国内外电力系统毁伤相关研究成果为基础,构建了电力CPS的毁伤树模型.根据电力CPS节点重要性与故障级联毁伤特性,提出了一种基于节点重要性的电力CPS易损性分析方法,构建了易损性评估模型,并结合实例进行了分析说明.结果表明,该模型可用于电力信息物理系统的生存力研究,为目标抗毁伤结构设计提升提供支撑.

关键词：毁伤效能评估生存力电力CPS系统易损性分析

A tunable adaptive detector for distributed targets when signal mismatch occurs

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Journal of Systems Engineering and Electronics 2023年第4期34卷 873-878页

作者： CUI Yufeng WANG Yongliang LIU Weijian DU Qinglei ZHANG Xichuan LI Xuhui Air Force Early Warning Academy Wuhan 430019China unit 93128 of the pla Beijing 100843China unit 93155 of the pla Chengdu 610041China

Aiming at the problem of detecting a distributed target when signal mismatch occurs,this paper proposes a tunable detector parameterized by an adjustable parameter.By adjusting the parameter,the tunable detector can achieve robust or selective detection of mismatched signals.Moreover,the proposed tunable detector,with a proper tunable parameter,can provide higher detection probability compared with existing detectors in the case of no signal mismatch.In addition,the proposed tunable detector possesses the constant false alarm rate property with the unknown noise covariance matrix.

关键词： multichannel signal detection target detection distributed target signal mismatch

A Practical Approach for Missing Wireless Sensor Networks Data Recovery

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China Communications 2024年第5期21卷 202-217页

作者： Song Xiaoxiang Guo Yan Li Ning Ren Bing The College of Communications Engineering Army Engineering University of PLANanjing 210007China The 63891 unit of pla Luoyang 471000China

In wireless sensor networks(WSNs),the performance of related applications is highly dependent on the quality of data collected.Unfortunately,missing data is almost inevitable in the process of data acquisition and transmission.Existing methods often rely on prior information such as low-rank characteristics or spatiotemporal correlation when recovering missing WSNs data.However,in realistic application scenarios,it is very difficult to obtain these prior information from incomplete data sets.Therefore,we aim to recover the missing WSNs data effectively while getting rid of the perplexity of prior information.By designing the corresponding measurement matrix that can capture the position of missing data and sparse representation matrix,a compressive sensing(CS)based missing data recovery model is established.Then,we design a comparison standard to select the best sparse representation basis and introduce average cross-correlation to examine the rationality of the established model.Furthermore,an improved fast matching pursuit algorithm is proposed to solve the model.Simulation results show that the proposed method can effectively recover the missing WSNs data.

关键词： average cross correlation matching pursuit missing data wireless sensor networks

7075铝合金搅拌摩擦焊焊接接头在3.5%NaCl溶液中的腐蚀疲劳断裂机理

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Journal of Central South University 2022年第3期29卷 1015-1028页

作者：白林越邵飞马青娜徐倩胡建祥侯毅男 Field Engineering Institute Army Engineering University of PLANanjing 210001China 32381 unit of pla Beijing 100072China

本文研究了7075铝合金搅拌摩擦焊(FSW)焊接接头在3.5%NaCl溶液中的腐蚀疲劳断裂机理。研究发现,焊接接头的腐蚀疲劳裂纹萌生于焊核区(NZ)和热力影响区(TMAZ)交界处。多个裂纹源同时发展,并在扩展阶段沿NZ和TMAZ交界线融合成大裂纹。此外... 详细信息

本文研究了7075铝合金搅拌摩擦焊(FSW)焊接接头在3.5%NaCl溶液中的腐蚀疲劳断裂机理。研究发现,焊接接头的腐蚀疲劳裂纹萌生于焊核区(NZ)和热力影响区(TMAZ)交界处。多个裂纹源同时发展,并在扩展阶段沿NZ和TMAZ交界线融合成大裂纹。此外,不论是在腐蚀疲劳裂纹的萌生还是扩展阶段,腐蚀作用和循环荷载始终存在相互促进的耦合作用,共同加速了焊接接头的腐蚀疲劳断裂。虽然FSW焊接接头的焊接残余应力水平相对较低,但在对FSW焊接接头的腐蚀疲劳断裂机理进行研究时仍需考虑焊接残余应力的影响。

关键词：铝合金搅拌摩擦焊焊接接头腐蚀疲劳断裂

Minimizing Age of Information in the Uplink Multi-User Networks via Dynamic Bandwidth Allocation

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China Communications 2023年第4期20卷 287-301页

作者： Zeyuan Zhu Xinrong Guan Baoquan Yu Tian Yu Yueming Cai College of Communication Engineering Army Engineering University of PLANanjing 210007China unit 31401 of pla Jinan 250002China

Improving the information freshness is critical for the monitoring and controlling applications in the cellular Internet of Things(IoT).In this paper,we are interested in optimizing the bandwidth allocation dynamically to improve the information freshness of the short packet based uplink status updates,which is characterized by a recently proposed metric,age of information(Ao I).We first design a status update scheme with channel distribution information(CDI).By relaxing the hard bandwidth constraint and introducing a Lagrangian multiplier,we first decouple the multi-MTCD bandwidth allocation problem into a single MTCD Markov decision process(MDP).Under the MDP framework,after variable substitution,we obtain the single-MTCD status update scheme by solving a linear programming problem.Then,we adjust the Lagrangian multiplier to make the obtained scheme satisfy the relaxed bandwidth constraint.Finally,a greedy policy is built on the proposed scheme to adjust the bandwidth allocation in each slot to satisfy the hard bandwidth constraint.In the unknown environment without CDI,we further design a bandwidth allocation scheme which only maximizes the expected sum Ao I drop within each time slot.Simulation results show that in terms of AoI,the proposed schemes outperform the benchmark schemes.

关键词： Internet of Things age of information short packet communications bandwidth allocation

ESMD-Flow: An Intelligent Flow Forwarding Scheme with Endogenous Security Based on Mimic Defense in Space-Air-Ground Integrated Network

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China Communications 2022年第1期19卷 40-51页

作者： Ziyong Li Yuxiang Hu Di Zhu JiangxingWu Yunjie Gu pla Strategic Support Force Information Engineering University Zhengzhou 450002China 61660 unit of pla Beijing 100089China

The Space-Air-Ground Integrated Network(SAGIN) realizes the integration of space, air,and ground networks, obtaining the global communication coverage.Software-Defined Networking(SDN) architecture in SAGIN has become a promising solution to guarantee the Quality of Service(QoS).However, the current routing algorithms mainly focus on the QoS of the service, rarely considering the security requirement of flow. To realize the secure transmission of flows in SAGIN, we propose an intelligent flow forwarding scheme with endogenous security based on Mimic Defense(ESMD-Flow). In this scheme, SDN controller will evaluate the reliability of nodes and links, isolate malicious nodes based on the reliability evaluation value, and adapt multipath routing strategy to ensure that flows are always forwarded along the most reliable multiple paths. In addition, in order to meet the security requirement of flows, we introduce the programming data plane to design a multiprotocol forwarding strategy for realizing the multiprotocol dynamic forwarding of flows. ESMD-Flow can reduce the network attack surface and improve the secure transmission capability of flows by implementing multipath routing and multi-protocol hybrid forwarding mechanism. The extensive simulations demonstrate that ESMD-Flow can significantly improve the average path reliability for routing and increase the difficulty of network eavesdropping while improving the network throughput and reducing the average packet delay.

关键词： space-air-ground integrated network(SAGIN) endogenous security multipath routing multi-protocol forwarding

Hypersonic Vehicle Trajectory Prediction Algorithm Based on Hough Transform

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Chinese Journal of Electronics 2021年第5期30卷 918-930页

作者： LI Fan XIONG Jiajun LAN Xuhui BI Hongkui TAN Xiansi Air Force Early Warning Academy unit 95980 of the pla

Trajectory prediction is a prerequisite for missile and high-speed vehicle guidance interception. To address the trajectory problem for the near space hypersonic unpowered gliding vehicle. Firstly, the trajectory prediction mechanism is analyzed. Based on the existing NSHV trajectory prediction method, the key techniques of trajectory prediction are discussed from the perspectives of prediction parameter selection and prediction parameter description. Then, a trajectory prediction method based on Hough transform is proposed. The core of the method is to select the longitude latitude, and high direction positions as prediction parameters, and use the Hough transform to fit the prior basis functions. In the latitude and longitude direction, the rationality of predicting parameters is discussed from two aspects: position extreme point and lateral maneuverability. In the height direction,for the NSHV oscillation drop characteristic, two Hough transforms are used to separate the periodic term from the linear term. In addition, we give the approximate interval of the parameter values of the method, and design a parameter adaptive scheme. Finally, trajectory prediction is performed on two different control patterns. The error of the prediction time of 100 s is within 25 km, and the results show the effectiveness of the proposed method.

关键词： Neural nets (theory) Spatial variables control Aerospace control Integral transforms Control system analysis and synthesis methods Near space hypersonic vehicle trajectory prediction Hough transform

A Fast Bayesian Evaluation Algorithm Based on the Second Category of Maximum Likelihood

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Journal of Donghua University(English Edition) 2015年第2期32卷 305-309页

作者：孟晶郑榕刘君 Key Laboratory of National Defense Science and Technology for Underwater Acoustic Warfare Unit 91388 of the PLA unit 92961 of the pla unit 91872 of the pla

Directing at evaluation for qualifying rate in weaponry test,this article discusses firstly how field test information is flooded with lots of prior information.Then a fast Bayesian evaluation algorithm is presented based on the elaborate analysis of prior information reliability and the second category of maximum likelihood.The example demonstrates that the algorithm presented in this article is better and more robust compared with classical evaluation algorithm for safe-or-failure test and normal Bayesian method,which can make the best of prior information.

关键词： simulation information weaponry test Bayesian method the second category of maximum likelihood confidence coefficient