检索结果-南通市图书馆

Multiple extended target tracking algorithm based on Gaussian surface matrix

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2016年第2期27卷 279-289页

作者： Jinlong Yang Peng Li Zhihua Li Le Yang School of internet of things Engineering Jiangnan University

In this paper, we consider the problem of irregular shapes tracking for multiple extended targets by introducing the Gaussian surface matrix（GSM） into the framework of the random finite set（RFS） theory. The Gaussian surface function is constructed first by the measurements, and it is used to define the GSM via a mapping function. We then integrate the GSM with the probability hypothesis density（PHD） filter, the Bayesian recursion formulas of GSM-PHD are derived and the Gaussian mixture implementation is employed to obtain the closed-form solutions. Moreover, the estimated shapes are designed to guide the measurement set sub-partition, which can cope with the problem of the spatially close target tracking. Simulation results show that the proposed algorithm can effectively estimate irregular target shapes and exhibit good robustness in cross extended target tracking.

关键词： multiple extended target tracking irregular shape Gaussian surface matrix(GSM) probability hypothesis density(PHD)

Fault-tolerant finite-time dynamical consensus of double-integrator multi-agent systems with partial agents subject to synchronous self-sensing function failure

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2022年第12期31卷 719-725页

作者： Zhi-Hai Wu Lin-Bo Xie Engineering Research Center of internet of things technology Applications of MOE School of Internet of Things EngineeringJiangnan UniversityWuxi 214122China

This paper investigates fault-tolerant finite-time dynamical consensus problems of double-integrator multi-agent systems(MASs)with partial agents subject to synchronous self-sensing function failure(SSFF).A strategy of recovering the connectivity of network topology among normal agents based on multi-hop communication and a fault-tolerant finitetime dynamical consensus protocol with time-varying gains are proposed to resist synchronous *** is proved that double-integrator MASs with partial agents subject to synchronous SSFF using the proposed strategy of network topology connectivity recovery and fault-tolerant finite-time dynamical consensus protocol with the proper time-varying gains can achieve finite-time dynamical *** simulations are given to illustrate the effectiveness of the theoretical results.

关键词： multi-agent systems synchronous self-sensing function failure finite-time dynamical consensus network topology connectivity recovery

Enabling End-to-End Communication Between Wireless Sensor Networks and the internet Based on 6Lo WPAN

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Electronics 2015年第3期24卷 633-638页

作者： LUO Bingqing SUN Zhixin College of internet of things Nanjing University of Posts and Telecommunications

In the paradigms of the internet of things(Io T), sensor nodes could collect the data through the Wireless sensor network(WSN), and could be managed and accessed by human users through the internet. There are many challenges remain. Taking advantage of IPv6,IPv6 over Low-power personal area networks(6Lo WPANs)implemented on resource constrained devices makes the connection possible and easier. This paper is contributing on constructing architecture of the end-to-end communication system based on 6Lo WPAN gateway, which enabled convergence of IPv6 network and low-power wireless networking, featuring encapsulating 6Lo WPAN adapter layer in a Network adapter driver(NAD) of personal computer. Using real commercial deployment, the result of application test bed shows that the IPv6 hosts could be interactive with IP-based sensor nodes through 6Lo WPAN gateway with acceptable latency and packet loss.

关键词： 6Lo WPAN IP-based wireless sensor network Gateway Network adapter driver

Research on the Model of a Lightweight Resource Addressing

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Electronics 2015年第4期24卷 832-836页

作者： LUO Bingqing SUN Zhixin College of internet of things Nanjing University of Posts and Telecommunications

This paper discussed the characteristics of addressing from the perspective of internet addressing mechanism. An internet of things(IOT) resource addressing iteration model was defined. In the model, a direct addressing mode for active nodes and an indirect addressing mode for passive codes were proposed, which meet the requirement for multiple encoding mode. A unified IOT resource lightweight addressing scheme based on IPv6 has been proposed to implement the two addressing modes. The scheme utilized the virtual domain to solve the problem of the heterogeneous encoding. The paper implemented the addressing process from the internet host to the sensor node based on IPv6 over low-power wireless personal area networks(6Lo WPAN) protocol. The experiment results show that the scheme is performed to realize communication between wireless sensor networks and IPv6 networks.

关键词： Addressing Lightweight IPv6 networks Iteration model Unified addressing scheme

CCI-based link quality estimation mechanism for wireless sensor networks under non-perceived packet loss

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

The Journal of China Universities of Posts and Telecommunications 2013年第1期20卷 1-10页

作者： SHU Jian TAO Juan LIU Lin-lan CHEN Ye-bin ZANG Chao internet of things technology Institute School of Software Nanchang Hangkong University internet of things technology Institute School of Information Engineering Nanchang Hangkong University

This paper proposes a chip correlation indicator （CCI）-based link quality estimation mechanism for wireless sensor networks under non-perceived packet loss. On the basis of analyzing all related factors, it can be concluded that signal-to-noise rate （SNR） is the main factor causing the non-perceived packet loss. In this paper, the relationship model between CCI and non-perceived packet loss rate （NPLR） is established from related models such as SNR versus packet success rate （PSR）, CCI versus SNR and CCI-NPLR. Due to the large fluctuating range of the raw CCI, Kalman filter is introduced to do de-noising of the raw CCI. The cubic model and the least squares method are employed to fit the relationship between CCI and SNR. In the experiments, many groups of comparison have been conducted and the results show that the proposed mechanism can achieve more accurate measurement of the non-perceived packet loss than existing approaches. Moreover, it has the advantage of decreasing extra energy consumption caused by sending large number of probe packets.

关键词： wireless sensor network link quality estimation non-perceived packet loss CCI SNR Kalman filter

Effect of porous surface layer on wave propagation in elastic cylinder immersed in fluid

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2023年第1期32卷 340-353页

作者：苏娜娜韩庆邦单鸣雷殷澄 College of internet of things Engineering Hohai UniversityChangzhou 213022China

To study the damage to an elastic cylinder immersed in fluid, a model of an elastic cylinder wrapped with a porous medium immersed in fluid is designed. This structure can both identify the properties of guided waves in a more practical model and address the relationship between the cylinder damage degree and the surface and surrounding medium. The principal motivation is to perform a detailed quantitative analysis of the longitudinal mode and flexural mode in an elastic cylinder wrapped with a porous medium immersed in fluid. The frequency equations for the propagation of waves are derived each for a pervious surface and an impervious surface by employing Biot theory. The influences of the various parameters of the porous medium wrapping layer on the phase velocity and attenuation are discussed. The results show that the influences of porosity on the dispersion curves of guided waves are much more significant than those of thickness,whereas the phase velocity is independent of the static permeability. There is an apparent “mode switching” between the two low-order modes. The characteristics of attenuation are in good agreement with the results from the dispersion *** work can support future studies for optimizing the theory on detecting the damage to cylinder or pipeline.

关键词： wave propagation porous surface layer dispersion attenuation

Effects of Strong Turbulence on the Spiral Plane Mode of Whittaker-Gaussian Beam through Terrene-Atmosphere

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2016年第5期33卷 50-53页

作者：李烨张逸新 School of science Jiangnan University School of internet of things Jiangnan University

The analytic formulae of probability distribution of spiral plane modes for the Whittaker-Gaussian （WG） beams with orbital angular momentum （OAM） in strong turbulence regime are modeled based on the modified Rytov approximation. Numerical results show that the erosstalk range of OAM modes in the vicinity of signal mode increases with the increasing refractive-index construction parameter. However, effects of change of the width of the Gaussian envelope and the parameter Wo of WG beams on normalization energy weight of signal mode can be ignored. We find theoretically that signal spiral plane mode of WG beams at each OAM level approximatively has the same normalization energy weight, implying that the channels with WG （pseudo non-diffraction） beam have higher channel capacity than the channels with the Laguerre-Gaussian beam.

关键词： OAM mode in of Effects of Strong Turbulence on the Spiral Plane Mode of Whittaker-Gaussian Beam through Terrene-Atmosphere on

A multi-resource scheduling scheme of Kubernetes for IIoT

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2022年第3期33卷 683-692页

作者： ZHU Lin LI Junjiang LIU Zijie ZHANG Dengyin Jiangsu Key Laboratory of Broadband Wireless Communication and internet of things Nanjing University of Posts and TelecommunicationsNanjing 210003China School of internet of things Nanjing University of Posts and TelecommunicationsNanjing 210003China

With the rapid development of data applications in the scene of Industrial internet of things(IIoT),how to schedule resources in IIoT environment has become an urgent problem to be *** to benefit of its strong scalability and compatibility,Kubernetes has been applied to resource scheduling in IIoT ***,the limited types of resources,the default scheduling scoring strategy,and the lack of delay control module limit its resource scheduling *** address these problems,this paper proposes a multi-resource scheduling(MRS)scheme of Kubernetes for *** MRS scheme dynamically balances resource utilization by taking both requirements of tasks and the current system state into ***,the experiments demonstrate the effectiveness of the MRS scheme in terms of delay control and resource utilization.

关键词： Industrial internet of things(IIoT) Kubernetes resource scheduling time delay

Pareto optimal time-frequency resource allocation for selfish wireless cooperative multicast networks

在线全文

学校读者我要写书评

暂无评论

science China(Information sciences) 2013年第12期56卷 214-221页

作者： ZHANG GuoPeng LIU Peng DING EnJie internet of things Research Center China University of Mining and Technology

In selfsh wireless cooperative multicast networks(WCMNs),a source node wants to achieve the optimal beneft(i.e.,rate gain),while the relaying nodes are willing to get fairness rewards(i.e.,rate gains)from the source for the cooperative *** this paper,we implement these two diferent objectives for the source and the relays through the Pareto optimal resource *** the cooperative strategy of a node as the fraction of a data-frame that it is willing to contribute to its cooperative *** the rational decision made by one node will defnitely afect its cooperative partners’***,we can formulate this resource sharing problem as a Nash bargaining problem(NBP),and the Nash bargaining solution(NBS)to the NBP encapsulates the Pareto optimality ***,to enable the nodes to be capable of computing the NBS cooperative strategies rapidly as the wireless channel changes,we propose a fast particle swarm optimizer(PSO)algorithm to search for the *** results show that the two specifed objectives of the source and the relays can be implemented in the Pareto optimal sense,i.e.,the source can achieve a signifcant performance gain in comparison with direct multicast and the relays can get a fair reward by the source according to the level of contribution it has made to improve the performance of the source.

关键词： wireless cooperative multicast resource allocation Nash bargaining problem Nash bargaining solution particle swarm optimizer