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Bluetooth Low Energy Direction Finding Principle

Publications associées (45)

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Traditionally, time difference of arrival (TDOA) based acoustic source tracking consists of two stages, more precisely, estimation of TDOAs followed by a tracking algorithm. In general, these two stages are performed separately and presume that (1) TDOAs c ...

Idiap2012

A survey of techniques and challenges in underwater localization

Marc Waldmeyer

Underwater Wireless Sensor Networks (UWSNs) are expected to support a variety of civilian and military applications. Sensed data can only be interpreted meaningfully when referenced to the location of the sensor, making localization an important problem. W ...

2011

The Accuracy of Automatic Photogrammetric Techniques on Ultra-light UAV Imagery

Pascal Fua, Dario Floreano, Jean-Christophe Zufferey, Antoine Beyeler, Christoph Strecha, Olivier Küng, François Gervaix

This paper presents an affordable, fully automated and accurate mapping solutions based on ultra-light UAV imagery. Several datasets are analysed and their accuracy is estimated. We show that the accuracy highly depends on the ground resolution (flying hei ...

2011

Indoor Navigation Research with the Khepera III Mobile Robot: An Experimental Baseline with a Case-study on Ultra-wideband Positioning

Alcherio Martinoli, Alexander Bahr, Amanda Stella Markowska Prorok, John Farserotu, Adrian Arfire

Recent substantial progress in the domain of indoor positioning systems and a growing number of indoor location-based applications are creating the need for systematic, efficient, and precise experimental methods able to assess the localization and perhaps ...

2010

Performance assessment of a new calibration method used for clock synchronization on impulse radio based Ultra-Wideband receivers

Pierre-André Farine, Cyril Botteron, Phillip Tomé, Christian Robert, Shiv Ashish Kumar

Part 1:Ongoing work –Positioning systems –Basics of UWB –Why UWB –Where UWB stands –Challenge: Synchronization of receivers –CRLB derivation Part 2:Outlook –Cooperative localization : an example. ...

2010

Cooperative Localization for Autonomous Underwater Vehicles

Alexander Bahr

Self-localization of an underwater vehicle is particularly challenging due to the absence of Global Positioning System (GPS) reception or features at known positions that could otherwise have been used for position computation. Thus Autonomous Underwater V ...

Massachusetts Institute of Technology and the Woods Oceanographic Institution2009

Map Matching using a multi-hypothesis approach

Modern navigation systems use multi-sensor-systems for location determination in combination with GPS or DGPS. Limitations in the availability of satellites due to shadowing and multi path effects in urban areas, magnetic disturbances, wheel slips and erro ...

2009

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The complementary nature of MEMS based pedestrian dead-reckoning (PDR) navigation and GNSS (Global Navigation Satellite System) has long been recognised. The advantages are quite clear for those applications requiring indoor positioning and that, for one r ...

Springer-Verlag New York, Ms Ingrid Cunningham, 175 Fifth Ave, New York, Ny 10010 Usa2008

The way ahead for London's bus priority at traffic signals

London has a long history of successful schemes for bus priority at traffic signals. Recently, Transport for London (TfL) has procured a modern automatic vehicle location (AVL) system for bus fleet management, passenger information and bus priority. The ne ...

Institution of Engineering and Technology2008

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In this paper we address the combination of multiple feature streams in a fast speaker diarization system for meeting recordings. Whenever Multiple Distant Microphones (MDM) are used, it is possible to estimate the Time Delay of Arrival (TDOA) for differen ...

2008