Wlan Positioning Systems Principles And Applications In Location Based Services Pdf
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The advances in localization based technologies and the increasing importance of ubiquitous computing and context-dependent information have led to a growing business interest in location-based applications and services. Today, most application requirements are locating or real-time tracking of physical belongings inside buildings accurately; thus, the demand for indoor localization services has become a key prerequisite in some markets. Moreover, indoor localization technologies address the inadequacy of global positioning system inside a closed environment, like buildings.
- اینترنشنال لایبرری
- WLAN Positioning Systems: Principles and Applications in Location-Based Services
- Wi-Fi positioning system
- Architecture for Multi-Technology Real-Time Location Systems
And how to obtain the location information is the key point of location-aware service. Finally some issues need to be resolved in future are discussed. Unable to display preview. Download preview PDF.
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The rising popularity of location-based services has prompted considerable research in the field of indoor location systems. Since there is no single technology to support these systems, it is necessary to consider the fusion of the information coming from heterogeneous sensors. This paper presents a software architecture designed for a hybrid location system where we can merge information from multiple sensor technologies. The architecture was designed to be used by different kinds of actors independently and with mutual transparency: hardware administrators, algorithm developers and user applications. The paper presents the architecture design, work-flow, case study examples and some results to show how different technologies can be exploited to obtain a good estimation of a target position. The problem of real time location systems RTLS in indoor scenarios is receiving a great deal of attention because of the many Location-Based Services LBSs that can be implemented with them, such as route management [ 1 ], guidance [ 2 ], points of interest [ 3 , 4 ], augmented reality [ 5 ], healthcare [ 6 ] and others. To provide such services we need a positioning system, typically based on radio range communications.
WLAN Positioning Systems: Principles and Applications in Location-Based Services
Describing the relevant detection and estimation theory, this detailed guide provides the background knowledge needed to tackle the design of practical WLAN positioning systems. It sets out key system-level challenges and design considerations in increasing positioning accuracy and reducing computational complexity, and it also examines design trade-offs and experimental results. Radio characteristics in real environments are discussed, as are the theoretical aspects of non-parametric statistical tools appropriate for modeling radio signals, statistical estimation techniques and the model-based stochastic estimators often used for positioning. A historical account of positioning systems in also included, giving graduate students, researchers and practitioners alike the perspective needed to understand the benefits and potential applications of WLAN positioning. Read Less.
WLAN Positioning Systems. Principles and Applications in Location-Based Services PDF; Export citation 5 - Positioning in wireless local area networks.
Wi-Fi positioning system
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Such systems include assisted GPS, urban positioning services through hotspot databases, and indoor positioning systems. Wi-Fi positioning takes advantage of the rapid growth in the early 21st century of wireless access points in urban areas. The most common and widespread localization technique used for positioning with wireless access points is based on measuring the intensity of the received signal received signal strength indication or RSSI and the method of "fingerprinting". The accuracy depends on the number of nearby access points whose positions have been entered into the database. To minimize fluctuations in the received signal, there are certain techniques that can be applied to filter the noise.
Metrics details. Wi-Fi-based indoor positioning for determining accurate wireless indoor location information has become crucial in meeting increasing demands for location-based services by leveraging the Internet of Things IoT and ubiquitous connectivity.
Architecture for Multi-Technology Real-Time Location Systems
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WLAN Positioning Systems Principles and Applications in Location-Based Services · Describing the relevant detection and estimation theory, this detailed guide.
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