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Fingerprinting localization techniques provide reliable location estimates and enable the development of location aware applications especially for indoor environments, where satellite based positioning is infeasible. In our approach we utilize received signal strength (RSS) fingerprints collected in known locations and employ a radial basis function (RBF) neural network to approximate the function...
We present a process for the development of an RFID textile, and have developed a map making system to support highly accurate position detection. Massively distributed RFIDs have the potential for location aware applications however time and cost are high for the deployment of the RFID tags, and correlation of the physical coordinates with each ID for making a map. We developed an RFID woven textile...
With the recent improvements and cost reductions in GPS technology and wireless communication, telematics systems that integrate wireless communications with sensor-based monitoring and location aware applications have been widely deployed for mobile asset tracking and condition monitoring. In such telematics systems, mining patterns from GPS datasets and exploring the useful data for asset behaviors...
We introduce a subway information system which utilize WiFi location technology for supporting a person in the underground. The system is composed of a mobile terminal with a WiFi device and a communication server. We have developed seven location aware applications for the mobile terminal. Each of the application helps the user with current location information. We have performed a demonstration...
The need for location aware applications is increasing with the popularity of ubiquitous computing. Localization which is the process of estimating the location of a node is an important building block in these location aware applications. In a typical localization technique, beacons whose locations are known a priori, acts as reference in estimating the location of user nodes. It has been observed...
This paper addresses the problems of real-time localization and 3D depth estimation across disparate sensing systems. The sensing systems include wireless microelectromechanical systems (MEMS) sensor networks, such as MICA sensors by Crossbow Inc., radio frequency identification (RFID) tags and cameras that capture a variety of spectra. Some of the sensing is adaptive in time and space by using a...
Wireless sensor networks monitor phenomena that vary over the spatial region the sensor network covers. The sensor readings may also be dual-used for additional purposes. In this paper we propose to use the inherent spatial variability in physical phenomena to support localization and position verification. We first present the problem of localization using general spatial information fields, and...
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