First experimental performances of the repealite based indoor positioning system

Vervisch-Picois, Alexandre; Samama, Nel

doi:10.1109/iswcs.2012.6328445

Cited by 5 publications

(4 citation statements)

References 3 publications

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“…Theoretically, using a minimum of four antennas appended in different positions, the repeater can reproduce the situation of an open sky measurement node even with just a single visible satellite (provided the signal from it is good enough). Experiments were performed on which SPIRENT GSS 6560 L1 generator was use to simulate the signals, which were supposed to be received by the receiver . Experiment results confirmed the feasibility of this conception.…”

Section: Positioning Sensormentioning

confidence: 72%

Local positioning systems versus structural monitoring: a review

Casciati

2014

Struct. Control Health Monit.

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SUMMARY Structural monitoring and structural health monitoring could take advantage from different devices to record the static or dynamic response of a structure. A positioning system provides displacement information on the location of moving objects, which is assumed to be the basic support to calibrate any structural mechanics model. The global positioning system could provide satisfactory accuracy in absolute displacement measurements. But the requirements of an open area position for the antennas and a roofed room for its data storage and power supply limit its flexibility and its applications. Several efforts are done to extend its field of application. The alternative is local positioning system. Non‐contact sensors can be easily installed on existing infrastructure in different locations without changing their properties: several technological approaches have been exploited: laser‐based, radar‐based, vision‐based, etc. In this paper, a number of existing options, together with their performances, are reviewed. Copyright © 2014 John Wiley & Sons, Ltd.

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Section: Positioning Sensormentioning

confidence: 72%

Local positioning systems versus structural monitoring: a review

Casciati

2014

Struct. Control Health Monit.

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“…GNSS-based solutions have also proven to be a candidate for the indoor positioning problem [ 19 , 20 , 21 ]. Some of the GNSS-based solutions are based on high sensitivity GNSS (HS-GNSS) [ 22 ], assisted GNSS (A-GNSS) [ 23 ], pseudolites [ 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ], GNSS repeaters [ 32 , 33 ], repealites [ 34 , 35 ], and peer-to-peer cooperative positioning [ 36 ]. Among the GNSS-based techniques, HS-GNSS and A-GNSS technologies require no infrastructure within the indoor environment, while pseudolite and repeater-based approaches require infrastructure.…”

Section: Introductionmentioning

confidence: 99%

Indoor Positioning System Based on Global Positioning System Signals with Down- and Up-Converters in 433 MHz ISM Band

Uzun

Ghani

Najafabadi

et al. 2021

Sensors

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In this paper, an indoor positioning system using Global Positioning System (GPS) signals in the 433 MHz Industrial Scientific Medical (ISM) band is proposed, and an experimental demonstration of how the proposed system operates under both line-of-sight and non-line-of-sight conditions on a building floor is presented. The proposed method is based on down-converting (DC) repeaters and an up-converting (UC) receiver. The down-conversion is deployed to avoid the restrictions on the use of Global Navigation Satellite Systems (GNSS) repeaters, to achieve higher output power, and to expose the GPS signals to lower path loss. The repeaters receive outdoor GPS signals at 1575.42 MHz (L1 band), down-convert them to the 433 MHz ISM band, then amplify and retransmit them to the indoor environment. The front end up-converter is combined with an off-the-shelf GPS receiver. When GPS signals at 433 MHz are received by the up-converting receiver, it then amplifies and up-converts these signals back to the L1 frequency. Subsequently, the off-the-shelf GPS receiver calculates the pseudo-ranges. The raw data are then sent from the receiver over a 2.4 GHz Wi-Fi link to a remote computer for data processing and indoor position estimation. Each repeater also has an attenuator to adjust its amplification level so that each repeater transmits almost equal signal levels in order to prevent jamming of the off-the-shelf GPS receiver. Experimental results demonstrate that the indoor position of a receiver can be found with sub-meter accuracy under both line-of-sight and non-line-of-sight conditions. The estimated position was found to be 54 and 98 cm away from the real position, while the 50% circular error probable (CEP) of the collected samples showed a radius of 3.3 and 4 m, respectively, for line-of-sight and non-line-of-sight cases.

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“…En particular, Yazici et al en (Yazici et al, 2011) propone un sistema de posicionamiento por ultrasonido llamado SESKON que utiliza la técnica de diferencia en tiempo de llegada (TDOA por sus sigla en inglés), La cual implementa un modo de sincronización alternativo al tradicional, alcanzando un error máximo de 16mm a velocidades de 200 mm/s. En un intento de reusar los receptores GPS para posicionamiento en interiores, algunos autores han propuesto el uso de satélites falsos (pseudolites) que emiten señales análogas a las del GPS (Niwa et al, 2008;Vervisch-Picois et al, 2010;Vervisch-Picois and Samama, 2012;Selmi et al, 2012). Los pseudolites emiten señales que permiten que un receptor GPS comercial estime la posición con errores en el orden de centímetros.…”

Section: Introductionunclassified

Sistema de posicionamiento en interiores utilizando señales de radio estaciones FM comerciales y Deep Learning

Roman

Márquez-Viloria

Velásquez

et al. 2020

Rev. iberoam. autom. inform. ind.

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<p>Para dar solución al problema de posicionamiento en interiores, muchos autores han propuesto el uso de diversas técnicas. Desde la simulación de un Sistema de Posicionamiento Global (GPS) a través de antenas Pseudolites, la construcción de campos magnéticos artificiales, el uso de diversos sensores como visión, ultrasonido, unidades de medida inercial, entre otros. Hasta el uso de transmisores y receptores en el rango de la Radio Frecuencia como los presentes en una oficina. Muchos de los sistemas anteriormente mencionados dependen para su correcto funcionamiento de una instalación y configuración de equipos en el lugar de posicionamiento, lo cual puede llevar en ocasiones a costosas implementaciones. Es por esto que para realizar este trabajo hemos propuesto una metodología de posicionamiento en interiores que no requiere de adecuaciones e instalaciones en el lugar de aplicación. La metodología propuesta hace uso de las radio estaciones FM existentes y utiliza algoritmos de Deep Learning como algoritmo de posicionamiento.</p>

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First experimental performances of the repealite based indoor positioning system

Cited by 5 publications

References 3 publications

Local positioning systems versus structural monitoring: a review

Local positioning systems versus structural monitoring: a review

Indoor Positioning System Based on Global Positioning System Signals with Down- and Up-Converters in 433 MHz ISM Band

Sistema de posicionamiento en interiores utilizando señales de radio estaciones FM comerciales y Deep Learning

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