Ultra-wideband (UWB) transmitter location using time difference of arrival (TDOA) techniques

Young, D.; Keller, C.M.; Bliss, Daniel W.; Forsythe, K.W.

doi:10.1109/acssc.2003.1292184

Cited by 45 publications

(27 citation statements)

References 2 publications

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“…noted that the high bandwidth of UWB systems allow for high time resolution leading to a natural advantage with TDOA localization. They present methods for overcoming the inherent distortion problems with UWB antenna responses, amplification, and filtering in an indoor multipath environment [14].…”

Section: Ultrawideband (Uwb) Systemsmentioning

confidence: 99%

WLAN-Based Real-Time Asset Tracking System in Healthcare Environments

Youna

Ali

Sharif

et al. 2007

Third IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob 2007)

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In the busy and crowded environment of health care, accurate location information of mobile medical devices and personnel (e.g. patients or physicians) is often a major challenge. In this paper, we present a real-time asset tracking system deployed within a hospital clinic setting, which tracked a set of mobile assets using small WiFi tags. The deployed system utilized radio signals received from wireless access points to estimate location of tagged assets. The system performed with resolution of within 1.5 meters, which is an acceptable range in such an environment. We developed a web-based graphical interface and a data management system which was capable of tracking and reporting status of an asset and providing an alert signal when it moved out of a designated area. Additionally, detailed logs of asset tracking information were available for archival purposes. This deployment demonstrates the feasibility of a Wi-Fi based positioning system in dynamic medical environments.

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Section: Ultrawideband (Uwb) Systemsmentioning

confidence: 99%

WLAN-Based Real-Time Asset Tracking System in Healthcare Environments

Youna

Ali

Sharif

et al. 2007

Third IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob 2007)

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“…Moreover, most of the implementations [5], [6], [7] are down-scaled versions of real systems with respect to the operating frequency or, due to the inherent correlation, require very high sampling rates which obviously are not realistic in practical applications. Furthermore, some of the platforms require off-line data processing [6], [7]. This paper presents results of experimental validation of the designed and implemented UWB technology-based ranging platform with the energy detection receiver.…”

Section: Introductionmentioning

confidence: 99%

Experimental validation of a TOA UWB ranging platform with the energy detection receiver

Pietrzyk

Grün

2010

2010 International Conference on Indoor Positioning and Indoor Navigation

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Despite a vast body of research on ultra-wideband (UWB) ranging and localization, relatively little knowledge is available regarding practical implementations of the proposed ideas. Although there are some testbeds already proposed and built, most of them imply a sort of correlation and require very high sampling rates (in the order of several GS/s) which are still difficult to realize in hardware. Moreover, the majority of the platforms does not support visualization of results in real-time. Details on the hardware implementation of the commercially available products, e.g. Ubisense or Time Domain, are not publicly accessible. In this paper, results on the experimental validation of the UWB-based ranging platform with real-time signal processing are presented. The platform is based on the time-of-arrival (ToA) technique and relatively simple to implement non-coherent energy detection receiver architecture. Such a receiver does not require high sampling rates nor inform ation about the channel. Our measurement results indicate that it is possible to achieve ranging accuracy of 1-2 cm with the sampling rate of 500 MS/s and with max. 3 bits of the A/D resolution

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“…Young et al noted that the high bandwidth of UWB systems allow for high time resolution leading to a natural advantage with TDOA localization. They present methods for overcoming the inherent distortion problems with UWB antenna responses, amplification, and filtering in an indoor multipath environment (Young et al, 2003). Zetik et al also approached UWB localization using TDOA.…”

Section: Ultra-wideband (Uwb) Systemsmentioning

confidence: 99%