Journal ArticleDOI
Advanced sensorial system for an acoustic LPS
Jesús Ureña,Alvaro Hernandez,Ana Jiménez,J.M. Villadangos,Manuel Mazo,Juan C. García,Juan Jesús García,Fernando Alvarez,C. De Marziani,M.C. Perez,José Jiménez,Antonio Jiménez,Fernando Seco +12 more
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TLDR
The main advantage of this proposal is to permit the coexistence of an unlimited number of portable receivers, what is useful in applications like multirobot cooperation.About:
This article is published in Microprocessors and Microsystems.The article was published on 2007-09-01. It has received 67 citations till now. The article focuses on the topics: Local positioning system & Beacon.read more
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Book ChapterDOI
A Review of Indoor Localization Technologies: towards Navigational Assistance for Topographical Disorientation
TL;DR: A taxonomy of localization technologies on the basis of the measured physical quantity is proposed and recommendations are made regarding the creation of context-aware systems that can be used to enhance a user's topographical orientation skills.
Journal ArticleDOI
A Robust High-Accuracy Ultrasound Indoor Positioning System Based on a Wireless Sensor Network.
Jun Qi,Guo-Ping Liu,Guo-Ping Liu +2 more
TL;DR: A new time domain method to extract the envelope of the ultrasonic signals is presented in order to estimate the time-of-flight (TOF) and simulation results show that the method can achieve envelope detection with a good filtering effect by means of the LSM.
Journal ArticleDOI
High-Accuracy Reference-Free Ultrasonic Location Estimation
TL;DR: A novel reference-free ultrasonic indoor location system that provides 3-D accuracy better than 9.5 cm in 99% of cases, an 80% accuracy improvement over the conventional AoA-only method.
Journal ArticleDOI
Infrared Sensor System for Mobile-Robot Positioning in Intelligent Spaces
Ernesto Martín Gorostiza,José Luis Lázaro Galilea,Franciso Javier Meca Meca,David Salido Monzú,Felipe Zapata,Luis Pallares Puerto +5 more
TL;DR: A sensorial system for measuring differential phase-shifts in a sinusoidally modulated infrared signal transmitted from the robot to demonstrate the validity of the system proposed, comparing it with other similar indoor positioning systems.
Journal ArticleDOI
Acoustic Local Positioning With Encoded Emission Beacons
Jesús Ureña,Alvaro Hernandez,Juan Jesús García,J.M. Villadangos,M. Carmen Perez,David Gualda,Fernando Alvarez,Teodoro Aguilera +7 more
TL;DR: This work presents a review of the different challenges that designers of systems based on encoded emission beacons must address in order to achieve suitable performance, and describes an ALPS that was implemented, installed in a large area and tested for mobile robot navigation.
References
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Proceedings ArticleDOI
The Cricket location-support system
TL;DR: The randomized algorithm used by beacons to transmit information, the use of concurrent radio and ultrasonic signals to infer distance, the listener inference algorithms to overcome multipath and interference, and practical beacon configuration and positioning techniques that improve accuracy are described.
Journal Article
Robust range estimation using acoustic and multimodal sensing
Lewis Girod,Deborah Estrin +1 more
TL;DR: This work presents and analyzes an acoustic ranging system that performs well in the presence of many types of interference, but can return incorrect measurements in non-line-of-sight conditions, and suggests how evidence from an orthogonal sensory channel might be used to detect and eliminate these measurements.
Proceedings ArticleDOI
Robust range estimation using acoustic and multimodal sensing
Lewis Girod,Deborah Estrin +1 more
TL;DR: In this paper, the authors present an acoustic ranging system that performs well in the presence of many types of interference, but can return incorrect measurements in non-line-of-sight conditions.
ReportDOI
Weight distribution formula for some class of cyclic codes
TL;DR: In this paper, the weight distribution formula of the code of length 2 -1 generated by (X^ " 1)/(h1 (X)h2(X)) for any m and h is presented.