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Why don't we use free 868 MHz band for geolocation?

Zineb Aqachmar Pascal Acco 1 Jean-Yves Fourniols 2 Guillaume Auriol 3 Christophe Escriba 2
1 LAAS-S4M - Équipe Instrumentation embarquée et systèmes de surveillance intelligents
LAAS - Laboratoire d'analyse et d'architecture des systèmes
2 LAAS-N2IS - Équipe Nano Ingénierie et Intégration des Systèmes
LAAS - Laboratoire d'analyse et d'architecture des systèmes
3 LAAS-ISI - Équipe Ingénierie Système et Intégration
LAAS - Laboratoire d'analyse et d'architecture des systèmes
Abstract : Geolocation with ultra wide band signals has seen much progress in recent years. Nevertheless, the use of narrow band signals hasn't been studied rigorously despite its advantages that we present in this paper. We study the case of using low power carrier signal from the ISM [Industrial, Scientific & Medical] radio bands, where each user that have to be geolocated accesses to a statistical frequency from the band [868, 870 MHz]. The modulating signal is a square of 100Hz frequency and the Method used for geolocation is TDOA
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https://hal.laas.fr/hal-01886054
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Zineb Aqachmar, Pascal Acco, Jean-Yves Fourniols, Guillaume Auriol, Christophe Escriba. Why don't we use free 868 MHz band for geolocation?. IEEE 27th Convention of Electrical & Electronics Engineers in Israel (IEEEI 2012), Nov 2012, Eilat, Israel. ⟨10.1109/EEEI.2012.6377141⟩. ⟨hal-01886054⟩

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