检索结果-内蒙古大学图书馆

A Multiple Target positioning and Tracking System Behind Brick-Concrete Walls Using Multiple Monostatic IR-UWB Radars

引用

SENSORS 2019年第18期19卷 4033-4033页

作者： Yoo, Sungwon Wang, Dingyang Seol, Dong-Min Lee, Chulsoo Chung, Sungmoon Cho, Sung Ho Hanyang Univ Dept Elect & Comp Engn Seoul 04763 South Korea LIGNex1 Co Ltd Data Link & Positioning Syst Seongnam 13488 South Korea Agcy Def Dev Def Ind Technol Ctr Seoul 04353 South Korea

Recognizing and tracking the targets located behind walls through impulse radio ultra-wideband (IR-UWB) radar provides a significant advantage, as the characteristics of the IR-UWB radar signal enable it to penetrate obstacles. In this study, we design a through-wall radar system to estimate and track multiple targets behind a wall. The radar signal received through the wall experiences distortion, such as attenuation and delay, and the characteristics of the wall are estimated to compensate the distance error. In addition, unlike general cases, it is difficult to maintain a high detection rate and low false alarm rate in this through-wall radar application due to the attenuation and distortion caused by the wall. In particular, the generally used delay-and-sum algorithm is significantly affected by the motion of targets and distortion caused by the wall, rendering it difficult to obtain a good performance. Thus, we propose a novel method, which calculates the likelihood that a target exists in a certain location through a detection process. Unlike the delay-and-sum algorithm, this method does not use the radar signal directly. Simulations and experiments are conducted in different cases to show the validity of our through-wall radar system. The results obtained by using the proposed algorithm as well as delay-and-sum and trilateration are compared in terms of the detection rate, false alarm rate, and positioning error.

关键词： impulse radio ultra-wideband radar through-wall radar imaging multiple target positioning and tracking wall characteristic estimation constant false alarm rate positioning algorithm

来源：评论

学校读者我要写书评

暂无评论

Vision-based positioning: Related Technologies, Applications, and Research Challenges 9

Vision-based Positioning: Related Technologies, Applications...

引用

9th IEEE International Conference on Software Engineering and Service Science (ICSESS)

作者： Zhao, Menglin Yan, Ming Li, Tianqi Commun Univ China Fac Sci & Technol Beijing Peoples R China

ISBN: (纸本)9781538665657

With the rapid development of computer vision technology and the wide use of cameras, vision-based positioning has become a new research hot spot. Higher accuracy, lower cost, wider range of applications and some other advantages make vision-based positioning technology more promising than traditional positioning methods. This paper gives a briefly introduction of different methods of positioning firstly. Then we discuss different technologies of vision-based positioning techniques and their core algorithms. In addition, we compared the advantages and disadvantages of different algorithms. Finally, we investigate different applications of vision-based positioning and analyze the existing problems and possible development trends.

关键词： vision-based positioning computer vision V-SLAM positioning algorithm

来源：评论

学校读者我要写书评

暂无评论

An Innovative Technique for Identification of Missing Persons in Natural Disaster Based on Drone-Femtocell Systems

引用

SENSORS 2019年第20期19卷 4547-4547页

作者： Avanzato, Roberta Beritelli, Francesco Univ Catania Dept Elect Elect & Comp Engn I-95125 Catania Italy

The recent development of the IoT (Internet of Things), which has enabled new types of sensors that can be easily interconnected to the Internet, will also have a significant impact in the near future on the management of natural disasters (mainly earthquakes and floods) with the aim of improving effectiveness in research, identification, and recovery of missing persons, and therefore increasing the possibility of saving lives. In this paper, more specifically, an innovative technique is proposed for the search and identification of missing persons in natural disaster scenarios by employing a drone-femtocell system and devising an algorithm capable of locating any mobile terminal in a given monitoring area. In particular, through a series of power measurements based on the reference signal received power (RSRP), the algorithm allows for the classification of the terminal inside or outside the monitoring area and subsequently identify the position with an accuracy of about 1 m, even in the presence of obstacles that act in such a way as to make the propagation of the radio signal non-isotropic.

关键词： drone/UAV system femtocell reference signal received power mobile terminal classification algorithm positioning algorithm 4G radio technologies (LTE)

来源：评论

学校读者我要写书评

暂无评论

An Improved GPS Dynamic positioning Filtering algorithm

An Improved GPS Dynamic Positioning Filtering Algorithm

引用

2013 Asian Pacific Conference on Mechatronics and Control Engineering(APCMCE 2013)

作者： Wang Jie Lin Xueyuan Guo Lilong Navl University of Astronautic and Aeronautic

According to the characteristics of the GPS receiver,this paper introduces an improved GPS positioning system filtering algorithm. Firstly,this paper establishes the state equation of the system according to the motor carrier's "current" statistical model,and then we establishes the measurement equation of the system based on the characteristics that GPS receiver can output the location and speed information,and lastly we get a standard Kalman filter algorithm model and a detailed description of the derivation of the algorithm. algorithm simulation results show that the improved algorithm can greatly improve accuracy.

关键词： GPS dynamic positioning Kalman filter dynamic filtering method positioning algorithm

来源：评论

学校读者我要写书评

暂无评论

Towards zero-configuration for Wi-Fi Indoor positioning System

Towards zero-configuration for Wi-Fi Indoor Positioning Syst...

引用

8th International Conference on Indoor positioning and Indoor Navigation (IPIN)

作者： Jacq, David Chatonnay, Pascal Bloch, Christelle Canalda, Philippe Spies, Francois Univ Bourgogne Franche Comte CNRS FEMTO ST Inst 1 Cours Leprince Ringuet Montbeliard France

ISBN: (纸本)9781509062997

This paper describes the state of the art of indoor positioning. It describes the Wi-Fi auto-calibration phase of a fast and adaptive algorithm to calculate the position of access-points in a heterogeneous environment such as a building, house or flat. Our proposal can track a mobile terminal in a building with a minimum of preparation. This deployment simplicity relies on the auto-calibration phase. Of course, this service must also provide good positioning accuracy. Therefore, the auto-calibration function described in this paper has two advantages: it serves to initialize and to model the environment using a set of environment parameters that the operator, using the web interface, can confirm or change.

关键词： positioning algorithm Wi-Fi Signal Strength Auto-calibration Network-centric architecture

来源：评论

学校读者我要写书评

暂无评论

Design and algorithm Research of Indoor Underwater Target positioning System

Design and Algorithm Research of Indoor Underwater Target Po...

引用

10th International Conference on Sensing Technology (ICST)

作者： Zang Yunge Chen Xiyuan Southeast Univ Sch Instrument Sci & Engn Nanjing Jiangsu Peoples R China

ISBN: (纸本)9781509007967

The main work of this paper is proposed an indoor underwater target positioning system and an improved positioning algorithm. The principle of the system is based on the underwater acoustic positioning method for marine positioning. In addition, the structure of the system and the positioning algorithm are improved for the indoor underwater fixed target. The system is based on the short-baseline principle, combined with an ultrasonic transducer, three hydrophones, and a water depth meter to compose an improved short-baseline array, which is used to locate the underwater target. And the artificial bee colony algorithm is used to deal with the distance information. Then the nonlinear optimization problem is solved, and the positioning accuracy of the system is improved. In this paper, the hardware structure, the positioning principle and the positioning algorithm are discussed. The experimental results show that the underwater target positioning system has the advantages of high precision and high stability, and the performance of the algorithm is obviously better than that of other algorithms.

关键词： underwater acoustic positioning system short baseline principle artificial bee colony algorithm positioning algorithm

来源：评论

学校读者我要写书评

暂无评论

The research of elderly health-care in wireless sensor networks 20

The research of elderly health-care in wireless sensor netwo...

引用

20th IEEE International Conference on Computational Science and Engineering (CSE) / 15th IEEE/IFIP International Conference on Embedded and Ubiquitous Computing (EUC)

作者： Yuan, Wenbin Cao, Ning Wang, Yingying Li, Chao Wang, Xiaoling Zhou, Li Qingdao Binhai Univ Coll Informat Engn Qingdao Peoples R China BeiJing Wuzi Univ Sch Informat Beijing Peoples R China

ISBN: (纸本)9781538632215

The paper will develop a wireless sensor network suitable for the medical scene of smart community for the elderly in the community to provide quality health care services for the elderly. The project will improve positioning accuracy of the elderly in the smart community through the study of positioning algorithm. Meanwhile, the project will design a routing protocol most appropriate for medical scene of smart community, to ensure that the collected data reach the gateway node more accurately and quickly, and then be sent out through the network. In addition, the project will analyze life trajectory data of the elderly through the study of machine learning algorithm, so as to better care for the elderly. To sum up, this project involves cutting-edge researches of wireless sensor routing protocol, positioning algorithm, big data analysis, machine learning, precision medicine, etc. With good market prospects and promotion value, this subject is very necessary.

关键词： Wireless sensor network Health care services positioning algorithm Big data analysis

来源：评论

学校读者我要写书评

暂无评论

Ensemble-based Location Tracking Using Passive RFID 4

Ensemble-based Location Tracking Using Passive RFID

引用

4th IEEE / ACM / ASA International Conference on Data Science and Advanced Analytics (DSAA)

作者： Liang, Hao-Ying Shieh, Yun-Tung Sanjay, Addicam Yang, Shao-Wen Lin, Shou-De Natl Taiwan Univ Taipei Taiwan Intel Corp Santa Clara CA 95051 USA

ISBN: (纸本)9781509050048

Location tracking of passive MID tags is useful for its ultra-low cost, but is very challenging for its passive nature. A passive RFID tag relies on no internal power source and draws power from the field created by the reader to power the microchip's circuits. This has made passive RFID tags highly sensitive to surrounding materials, as well as any disturbance. Therefore, conventional machine learning models may not perform well. In this paper, we propose an ensemble based machine learning model, together with novel feature engineering techniques, for location tracking of passive MD, which can work seamlessly with any supervised learning methods. The reader-based sub-models training method used in our model significantly reduces the training time by splitting our model into smaller sub-models and training then in parallel, which is desirable in real-world application.

关键词： RFID RSSI Indoor Location positioning algorithm Ensemble

来源：评论

学校读者我要写书评

暂无评论

Design of a four-quadrant detector for the laser seeker of guided gun-launched projectile

Design of a four-quadrant detector for the laser seeker of g...

引用

Annual Conference of the Chinese-Society-for-Optical-Engineering (CSOE) on Applied Optics and Photonics China (AOPC) - Optical Sensing and Imaging Technology and Applications

作者： Liang, Ke Wang, Jia-wei Qi, Ke-yu Huang, Zheng Xian Inst Electromech Informat Technol 99 Jixiang Rd Xian 710065 Shaanxi Peoples R China

ISBN: (数字)9781510614062

ISBN: (纸本)9781510614062;9781510614055

The design of a four-quadrant detector for the semi-active laser seeker on the guided gun-launched projectile was studied. Several key parameters of the four-quadrant detector, including the photosensitive area, spectral responsivity, respond speed and noise equivalent power were discussed in the application. A bigger photosensitive area will be benefited to get a larger detection range, however, it will decrease the response speed and increase the positioning time. The spectral responsivity of the detector was chosen to be highly sensitive with the 1064nm wavelength laser, and its responsivities for the other wavelengths were relatively low. As the operation time is short, the response speed of the detector need to be increased as higher as possible, and many influencing factors were compromised in the design. A lower number of NEP was optimized for the better detecting capability. The orientation detection circuit and related positioning algorithm was developed to determine the yaw angle and pitch angle between the projectile and the target. Then the relative position errors, including the lateral and vertical deviation, were obtained from the four-quadrant detector. The influence of the size of facula with respect to the detecting sensitivity and effective measure ranges of the four-quadrant detector were analyzed. Finally, the sizes both of the facula and the four-quadrant detector were designed to ensure the most efficient use of the detecting sensitivity and effective measure ranges of the detector.

关键词： Four-quadrant detector semi-active laser seeker guided gun-launched projectile positioning algorithm

来源：评论

学校读者我要写书评

暂无评论

Store layout optimization using indoor positioning system

引用

INTERNATIONAL JOURNAL OF DISTRIBUTED SENSOR NETWORKS 2017年第2期13卷 1-1页

作者： Hwangbo, Hyunwoo Kim, Jonghyuk Lee, Zoonky Kim, Soyean Yonsei Univ Grad Sch Informat Seoul South Korea Kyung Hee Univ Coll Int Studies Dept Int Studies Yongin 17104 South Korea

Indoor positioning systems have attracted considerable attention from practitioners and firms seeking to optimize the consumer shopping experience with the goal of attaining increased revenue and profitability. Acknowledging the importance of indoor positioning systems in store layout optimization, we conducted a field experiment for 11 months in order to develop algorithms for connecting indoor positioning data with customer transaction data. Using fingerprinting as a primary data collection technique, we compared positioning and transaction data before and after critical store layout optimization decisions in order to identify which customer movement patterns generated the highest sales. In contrast to previous works on indoor positioning systems, which focused solely on developing algorithms or techniques to increase accuracy rates, our algorithms in principle integrate computing and marketing perspectives. Our findings can be applied to store layout optimization and personalized marketing.

关键词： Indoor positioning system store layout optimization fingerprinting wireless localization positioning algorithm

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：