Mobile indoor navigation systems guide users through buildings and premises by taking into account the current position of the user and a destination such as a room, office or shop. In many environments a spontaneous and also anonymous navigation is desirable e.g. at airports, hospitals or university campuses. However, many systems that have been proposed so far require the integration of a rad...

Sleep is known to support memory consolidation in animals, including humans. Here we ask whether consolidation of novel navigation memory in honeybees depends on sleep. Foragers were exposed to a forced navigation task in which they learned to home more efficiently from an unexpected release site by acquiring navigational memory during the successful homing flight. This task was quantified usin...

Over the last years researchers proposed numerous indoor localisation and navigation systems. However, solutions that use WiFi or Radio Frequency Identification require infrastructure to be deployed in the navigation area and infrastructure-less techniques, e.g. the ones based on mobile cell ID or dead reckoning suffer from large accuracy errors. In this Thesis, we present a novel approach of i...

Cognitive radio (CR) is a technology exploiting knowledge from very diverse fields, such as machine learning, information theory, and wireless communications. The first part of the report introduces state-of-the-art survey on CR. It begins with survey on software defined radio (SDR), since it is the key enabling technology for future development of practical cognitive systems. Because the work ...

Accuracy and robustness are vital to present and future air navigation, both in the military and civil spheres. The strengths of INS and GPS are well known; integrated INS/GPS systems combine their advantages. However, the knowledge required to jam GPS is becoming public, and it can be carried out with basic hardware. When GPS data are unavailable, and a low grade INS is used, navigation accura...

in this paper, we present the results of a hierarchical slam/gps/ins/wlfp sensor fusion to be used in navigation system devices. due to low quality of the inertial sensors, even a short-term gps failure can lower the integrated navigation performance significantly. in addition, in gps denied environments, most navigation systems need a separate assisting resource, in order to increase the avail...

GATE is the only Galileo test and development environment worldwide where already today navigation is possible with realistic Galileo Signals on all frequencies in an outdoor area. GATE is a local ground-based “miniature navigation system” which will provide real Galileo signals already several years before the full operability of the Galileo system in space. Thus, GATE is an important intermed...

CASSIOPE, the CAScade demonstrator Smallsat and IOnospheric Polar Explorer, is a Canadian satellite scheduled for launch in 2007. It is a hybrid mission designed for a wide range of tasks including space-based communication, high capacity information delivery, and observations of the Earth’s atmospheric environment. A dedicated suite of eight scientific instruments, called e-PoP, will investiga...

A GPS Radio Occultation occurs when a transmitting GPS satellite, setting or rising behind the Earth limb, is viewed by a LEO satellite that carries on board a space-qualified GPS receiver. In this way, it is provided a vertical sounding of the atmosphere exploiting the relative motion between the GPS and the LEO satellites. The technique proved to be particularly precise in retrieving temperat...