Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"indoor location"”.
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The Cricket indoor location system
Indoor environments present opportunities for a rich set of location-aware applications such as navigation tools for humans and robots, interactive virtual games, resource discovery, asset tracking, location-aware sensor networking etc. Typical indoor applications require better accuracy than what …
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Ultrawideband Indoor Location And Tracking System
The objective of this thesis is to demonstrate an indoor intruder location and tracking system with UltraWideBand (UWB) technology and use data compression and Constant False Alarm Rate (CFAR) techniques to improve the performance of the location system. Reliable and accurate indoor positioning …
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Organic indoor location : infrastructure and applications
… to enable a mobile device to discover its indoor location. One of the main goals behind OIL is to enable non-expert users to contribute the data that is required for localization. Toward this we have developed (1) a server-client architecture for aggregating and distributing data; (2) a …
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Providing precise indoor location information to mobile devices
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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TaleBlazer : using iBeacons for indoor location-based augmented reality games
TaleBlazer is a platform for creating and playing location-based educational augmented reality games. This thesis describes the design and implementation of new indoor location-based functionality in TaleBlazer, based on the use of iBeacon technology. It describes how the new functionality can be …
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Self-organising an indoor location system using a paintable amorphous computer
… may be used in the rapid deployment of a passive indoor positioning system's infrastructure.<br/>A future hypothetical scenario is used where computing particles are suspended in paint and covered over a ceiling. A spatial pattern is then formed over the covered ceiling. Any small portion of the …
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An Optimization Approach to Indoor Location Problem Based on Received Signal Strength
… through the implementation of a low-cost indoor location system using received signal devices. Indoor location through received signal strength (RSS) is of low costs, yet it suffers from poor accuracy due to lack of direct line-of-sight, multi-path ratio propagation, and various …
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Design considerations for an indoor location service using 802.11 wireless signal strength
… to the problem of discovering a mobile user's location indoors. The particular challenges of location discovery using 802.11 (Wi-Fi) signals and "organically collected" (i.e. user-generated) received signal strength maps are discussed. Several existing and novel localizer algorithms are …
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Indoor Location Tracking and Orientation Estimation Using a Particle Filter, INS, and RSSI
… in wearable devices and smartphones, indoor localization is becoming a heavily researched topic. One such application for this topic is in the medical field where wireless sensor devices that are capable of monitoring patient vitals and giving accurate location estimations allow for a …
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An API for location aware computing
Indoor, location-aware devices have the potential to provide extremely useful resource and building information to human users; for example, a location-aware PDA could potentially provide map information in real time. We have developed a complete, extensible, indoor location-aware API to allow …
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An ultrasonic compass for context-aware mobile applications
… develop the infrastructure to provide contextual location and orientation information through pervasive computing elements. I lay the foundations for leveraging the Cricket indoor location system to supply orientation information. I first characterize the use of ultrasound in Cricket for distance …
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Design and implementation of an indoor mobile navigation system
… the design and implementation of CricketNav, an indoor mobile navigation system using the Cricket indoor location sensing infrastructure developed at the MIT Laboratory for Computer Science as part of Project Oxygen. CricketNav navigates users to the desired destination by displaying a navigation …
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A bayesian approach to wireless location problems
Several approaches for indoor location estimation in wireless networks are proposed. We explore non-hierarchical and hierarchical Bayesian graphical models that use prior knowledge about physics of signal propagation, as well as different modifications of Bayesian bivariate spline models. The …
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WristQue : a personal sensor wristband for smart infrastructure and control
… sensors on the device, fused with precise indoor location for context. By placing these sensors and controls on the wrist, they are generally able to sense the environment unobstructed and are conveniently within reach at all times. WristQue is able to continuously collect and stream sensor …
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Loco-Radio : designing high-density augmented reality audio browsers
… sensing module to provide outdoor and indoor location sensing. To enhance the audio browsing experience in high-density spatialized audio environments, we introduce auditory spatial scaling, which enables users or the system to adjust the spatial density of perceived sounds based on …
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Indoor localization using place and motion signatures
Most current methods for 802.11-based indoor localization depend on either simple radio propagation models or exhaustive, costly surveys conducted by skilled technicians. These methods are not satisfactory for long-term, large-scale positioning of mobile devices in practice. This thesis describes …
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Applications of Sensor Fusion to Classification, Localization and Mapping
… Automatic Modulation Classification (AMC) and indoor localization and mapping based on smartphone sensors. Automatic Modulation Classification is a key technology in Cognitive Radio (CR) networks, spectrum sharing, and wireless military applications. Although extensively researched, performance …
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A model personal energy meter
… shows how second-order estimators combined with location data can provide a proxy for fine-grained sensing. A key ingredient for apportionment mechanisms is data on energy usage. This may come from metering devices or buildings directly, or from profiling devices and using secondary indicators to …
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On the Improvement of Positioning in LTE with Collaboration and Pressure Sensors
The ability to find the location of a mobile user has become of utmost importance. The demands of first responders necessitates the ability to accurately identify the location of an individual who is calling for help. Their response times are directly influenced by the ability to locate the caller. …
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Pedestrian localisation for indoor environments
… and infer context about the state of the world. Location has proven to be an important source of contextual information for such systems. If a device can determine its own location then it can infer its surroundings and adapt accordingly. Of particular interest for many ubiquitous computing …
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