检索结果-内蒙古大学图书馆

12th International Wireless Communications & Mobile Computing Conference (IWCMC)

作者： El Assaf, Ahmad Zaidi, Slim Affes, Sofiene Kandil, Nahi Univ Quebec INRS EMT Montreal PQ H5A 1K6 Canada Univ Quebec Abitibi Temiscaming LRTCS Rouyn Noranda PQ J9X 5E4 Canada

ISBN: (纸本)9781509003044

In this paper, we develop a novel optimal anchors placement strategy tailored for anisotropic WSNs. By resorting to the well-known particle swarm optimization (PSO), we derive the optimal anchors' positions that minimize the average location estimation error (LEE). We show that our placement strategy provides substantial accuracy gains if used instead of the conventional ones and that it is able to reduce not only the average LEE but also the LEE itself and, hence, guarantees high accuracy for any WSN configuration.

关键词： Optimal anchors placement wireless sensor networks (WSN)s localization algorithms anisotropic environments particle swarm optimization (PSO)

来源：评论

学校读者我要写书评

暂无评论

Signaling game based strategy for secure positioning in wireless sensor networks

引用

PERVASIVE AND MOBILE COMPUTING 2017年 40卷 611-627页

作者： Esposito, Christian Choi, Chang Univ Salerno Dept Comp Sci Via Giovanni Paolo 2132 I-84084 Fisciano SA Italy Chosun Univ Dept Comp Engn 375 Seoseok Dong Gwangju 61452 South Korea

Sensor localization is demanded by wireless sensor networks, since the collected sensor data are meaningless if the position of the generating sensor is not available. The traditional approach of using GPS for location determination is not suitable for sensor networks, due to the increased costs and resource usage. For this reason, sensors exchange Radio Frequency messages, so as to measure their respective distances and determine their locations by means of multilateral triangulation with sensors of known positions, called anchors. Such an approach, however, is particularly vulnerable to several kinds of attacks aiming at causing wrong position estimations with a malicious intention. Such attacks can be tolerated with proper countermeasures, belonging to the so called secure localization, but this is achieved at the expenses of high costs in terms of exchanged messages and exhausted sensor resources, such as the battery. For these reasons, it is crucial to use the secure localization only when needed in order to extend considerably the life span of the sensors. Therefore, we propose to model the interaction of an anchor with a sensor as a signaling game, and to use such a formalization to discipline the use of secure positioning methods based on the received messages from the anchors. We have proved with simulations that such a solution is more efficient than a naive one of always applying secure localization. (C) 2017 Elsevier B.V. All rights reserved.

关键词： Wireless sensor networks localization algorithms Security Game theory

来源：评论

学校读者我要写书评

暂无评论

Extracting High-Level Information from Location Data: The W4 Diary Example

引用

MOBILE NETWORKS & APPLICATIONS 2009年第1期14卷 107-119页

作者： Castelli, Gabriella Mamei, Marco Rosi, Alberto Zambonelli, Franco Univ Modena & Reggio Emilia Dipartimento Sci & Metodi Ingn I-42100 Reggio Emilia Italy

Services for mobile and pervasive computing should extensively exploit contextual information both to adapt to user needs and to enable autonomic behavior. To fulfill this idea it is important to provide two key tools: a model supporting context-data representation and manipulation, and a set of algorithms relying on the model to perform application tasks. Following these lines, we first describe the W4 context model showing how it can represent a simple yet effective framework to enable flexible and general-purpose management of contextual information. In particular, we show the model suitability in describing user-centric situations, e.g., describing situations in terms of where a user is located and what he is doing. Then, we illustrate a set of algorithms to semantically enrich W4 represented data and to extract relevant information from it. In particular, starting from W4 data, such algorithms are able to identify the places that matter to the user and to describe them semantically. Overall, we show how the context-model and the algorithms allow to create an high-level, semantic and context-aware diary-based service. This service meaningfully collects and classifies the user whereabouts and the places that the user visited.

关键词： pervasive computing context-awareness W4 model knowledge engineering location-aware services localization algorithms

来源：评论

学校读者我要写书评

暂无评论

On-line diagnostics in the Mobile Spatial coordinate Measuring System (MScMS)

引用

PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY 2009年第4期33卷 408-417页

作者： Franceschini, Fiorenzo Galetto, Maurizio Maisano, Domenico Mastrogiacomo, Luca Politecn Torino DISPEA I-10129 Turin Italy

Mobile Spatial coordinate Measuring System (MScMS) is a wireless-sensor-network based system developed at the industrial metrology and quality engineering laboratory of DISPEA - Politecnico di Torino. It has been designed to perform simple and rapid indoor dimensional measurements of large-size volumes (large-scale metrology). It is made up of three basic parts: a "constellation" of wireless devices (Crickets), a mobile probe, and a PC to store and elaborate data. Crickets and mobile probe utilize ultrasound (US) transceivers in order to evaluate mutual distances. The system makes it possible to calculate the position - in terms of spatial coordinates - of the object points "touched" by the probe. Acquired data are then available for different types of elaboration (determination of distances, curves or surfaces of measured objects). In order to protect the system against causes of error such as, for example, US signal diffraction and reflection, external uncontrolled US sources (key jingling, neon blinking, etc.), or software non-acceptable solutions, MScMS implements some statistical tests for on-line diagnostics. Three of them are deeply analyzed in this paper: "energy model-based diagnostics", "distance model-based diagnostics", and "sensor physical diagnostics". For each measurement, if all these tests are satisfied at once, the measured result may be considered acceptable with a specific confidence coefficient. Otherwise, the measurement is rejected. After a general description of the MScMS, the paper focuses on the description of these three online diagnostic tools. Some preliminary results achieved by the system prototype are also presented and discussed. (C) 2008 Elsevier Inc. All rights reserved.

关键词： Mobile measuring system Coordinate metrology Dimensional measurements Large-scale metrology Wireless-sensor-networks localization algorithms On-line diagnostics

来源：评论

学校读者我要写书评

暂无评论

The 1,000-km Challenge: Insights and Quantitative and Qualitative Results

引用

IEEE INTELLIGENT SYSTEMS 2016年第3期31卷 86-96页

作者： Biswas, Joydeep Veloso, Manuela Carnegie Mellon Univ Pittsburgh PA 15213 USA

On 18 November 2014, a team of four autonomous CoBot robots reached 1,000-km of overall autonomous navigation, as a result of a 1,000-km challenge that the authors had set three years earlier. The authors are frequently asked for the lessons learned, as well as the performance results. In this article, they introduce the challenge and contribute a detailed presentation of technical insights as well as quantitative and qualitative results. They have previously presented the algorithms for the individual technical contributions, namely robot localization, symbiotic robot autonomy, and robot task scheduling. In this article, they present the data collected over the 1,000-km challenge and analyze it to evaluate the accuracy and robustness of the localization algorithms on the CoBots. Furthermore, they present technical insights into the algorithms, which they believe are responsible for the robots" continuous robust performance.

关键词： mobile robots multi-robot systems path planning robust control 1000-km challenge autonomous CoBot robots autonomous navigation localization algorithms robot localization robot task scheduling robust performance robustness symbiotic robot autonomy Buildings Cameras Mobile robots Navigation Robot sensing systems Robustness CoBot autonomous navigation intelligent systems robot autonomy robustness

来源：评论

学校读者我要写书评

暂无评论

A Survey of Agent Technologies for Wireless Sensor Networks

引用

IETE TECHNICAL REVIEW 2011年第2期28卷 168-184页

作者： Dagdeviren, Orhan Korkmaz, Ilker Tekbacak, Fatih Erciyes, Kayhan Izmir Inst Technol Dept Comp Engn TR-35430 Urla Turkey Izmir Univ Econ Dept Comp Engn TR-35330 Balcova Turkey Izmir Univ TR-35350 Izmir Turkey

Wireless sensor networks (WSNs) do not have a fixed infrastructure and consist of sensor nodes that perform sensing and communicating tasks. The WSNs have large application spectrum such as habitat monitoring, military surveillance, and target tracking, where sensor nodes may operate distributed in highly dynamic environments. Battery-constrained sensor nodes may aggregate the sensed data, localize themselves, and route the packets in an energy-efficient and decentralized manner to enable running the applications. Agents are capable of independent and autonomous action, so that they can successfully carry out tasks that have been delegated to them, thus agent-based approaches are very suitable to apply as the solution of the problems occurring in WSNs. So far many agent-based approaches were proposed for WSNs. This paper surveys the agent technologies for sensor networks by providing a classification, objectives and costs of these approaches with the open research problems. To the best of our knowledge, this is the first study that covers the intersection of the agent technology and sensor networks from a wide perspective.

关键词： Agent middlewares Communication protocols Data sampling algorithms Energy harvesting algorithms localization algorithms Mobile software agents Mobile hardware agents Multi-agent systems Task assignment algorithms Wireless sensor networks

来源：评论

学校读者我要写书评

暂无评论

Wireless sensor localization based on distance optimization and assistance by mobile anchor nodes: a novel algorithm

引用

PEERJ COMPUTER SCIENCE 2024年 10卷 e2179页

作者： Yang, Hui Lanzhou Univ Arts & Sci Sch Media Engn Lanzhou Gansu Peoples R China

Wireless sensor networks (WSNs) have wide applications in healthcare, environmental monitoring, and target tracking, relying on sensor nodes that are joined cooperatively. The research investigates localization algorithms for both target and node in WSNs to enhance accuracy. An innovative localization algorithm characterized as an asynchronous time-of-arrival (TOA) target is proposed by implementing a differential evolution algorithm. Unlike available approaches, the proposed algorithm employs the least squares criterion to represent signal-sending time as a function of the target position. The target node's coordinates are estimated by utilizing a differential evolution algorithm with reverse learning and adaptive redirection. A hybrid received signal strength (RSS)-TOA target localization algorithm is introduced, addressing the challenge of unknown transmission parameters. This algorithm simultaneously estimates transmitted power, path loss index, and target position by employing the RSS and TOA measurements. These proposed algorithms improve the accuracy and efficiency of wireless sensor localization, boosting performance in various WSN applications.

关键词： Wireless sensor networks localization algorithms Target tracking Differential evolution algorithm Positioning accuracy

来源：评论

学校读者我要写书评

暂无评论

Hybrid algorithm based on radial symmetry and weighted least-square ellipse fitting for three-dimensional nanometer particle localization

引用

JOURNAL OF BIOMEDICAL OPTICS 2018年第3期23卷 036501-036501页

作者： Huang, Xia Ding, Yu Xiao, Chuan Qian, Wei Li, Chunqiang Univ Texas El Paso Dept Met Mat & Biomed Engn El Paso TX 79968 USA Univ Texas El Paso Dept Phys El Paso TX 79968 USA Univ Texas El Paso Dept Chem & Biochem El Paso TX 79968 USA Univ Texas El Paso Dept Elect & Comp Engn El Paso TX 79968 USA Northeastern Univ Sinodutch Biomed & Informat Engn Sch Shenyang Liaoning Peoples R China

Choosing the localization algorithm in superresolution microscopy is an important factor in determining the resolution in such a modality. The point spread function (PSF) in defocused images has ring structures that can be used to localize the three-dimensional (3-D) position of single particles by calculating the ring center (x and y) and radius (z). As there is no well-developed mathematical model for a defocused PSF, it is difficult to perform a fitting-based algorithm in such images. A particle localization algorithm based on radial symmetry and ellipse fitting is developed to localize the centers and radii of defocused PSFs. Our method can localize the 3-D position of a fluorophore within 20-nm precision in three-dimensions in a range of 40 mu m in z-dimension from defocused two-dimensional (2-D) images. (C) 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)

关键词： localization algorithms superresolution fluorescence microscopy

来源：评论

学校读者我要写书评

暂无评论

Range Free localization Techniques in Wireless Sensor Networks: A Review

引用

Procedia Computer Science 2015年 57卷 7-16页

作者： Santar Pal Singh S.C. Sharma Electronics and Computer Discipline DPT Indian Institute of Technology Roorkee Roorkee 247667 India

Recent developments in micro electro mechanical systems (MEMS) technology and wireless communication have propelled the growing applications of wireless sensor networks (WSNs). Wireless sensor network is comprised of large number of small and cheap devices known as sensors. One of the important functions of sensor network is collection and forwarding of data. In most of the applications, it is of much interest to find out the location of the data. This type of information can be obtained by use of localization techniques. So node localization is very crucial to find out the position of node with the help of localization algorithms. Hence, node localization becomes one of the fundamental challenges in WSNs. We make the rigorous reviews on different schemes of localization in sensor networks. On the basis of range measurements, the localization schemes can be broadly classified in two categories such as: range based and range free schemes. The cost and hardware limitation on sensing node preclude the use of range based localization schemes. In most of the sensor network application coarse accuracy is sufficient so range free localization schemes are considered as a substitute to range based schemes. In this paper, the detailed study has been carried out to understand and select the best range free localization algorithm for WSNs. At the end some issues are discussed for future research in the area of localization techniques for WSNs.

关键词： wireless sensor networks range free localization localization algorithms range accuracy.

来源：评论

学校读者我要写书评

暂无评论

A Collaborative and Predictive localization Algorithm for Wireless Sensor Networks

引用

KSII TRANSACTIONS ON INTERNET AND INFORMATION SYSTEMS 2017年第7期11卷 3480-3500页

作者： Liu, Yuan Chen, Junjie Southeast Univ Nanjing 210096 Jiangsu Peoples R China

Accurate locating for the mobile target remains a challenge in various applications of wireless sensor networks (WSNs). Unfortunately, most of the typical localization algorithms perform well only in the WSN with densely distributed sensor nodes. The non-localizable problem is prone to happening when a target moves into the WSN with sparsely distributed sensor nodes. To solve this problem, we propose a collaborative and predictive localization algorithm (CPLA). The Gaussian mixture model (GMM) is introduced to predict the posterior trajectory for a mobile target by training its prior trajectory. In addition, the collaborative and predictive schemes are designed to solve the non-localizable problems in the two-anchor nodes locating, one-anchor node locating and non-anchor node locating situations. Simulation results prove that the CPLA exhibits higher localization accuracy than other tested predictive localization algorithms either in the WSN with sparsely distributed sensor nodes or in the WSN with densely distributed sensor nodes.

关键词： Wireless sensor networks localization algorithms non-localizable problem Gaussian mixture model collaborative and predictive schemes

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：