Download Aeronautical Air-Ground Data Link Communications by Mohamed Slim Ben Mahmoud, Christophe Guerber, Nicolas PDF

By Mohamed Slim Ben Mahmoud, Christophe Guerber, Nicolas Larrieu, Alain Pirovano, Jos? Radzik

This e-book bargains with air-ground aeronautical communications. the most objective is to provide the reader a survey of the presently deployed, rising and destiny communications structures devoted to electronic info communications among the airplane and the floor, particularly the information hyperlink. these communique platforms exhibit particular houses fairly to these customary for terrestrial communications. during this booklet, the procedure architectures are extra in particular thought of from the entry to the applying layers as radio and actual functionalities have already been addressed intimately in others books.

The first half is an advent to aeronautical communications, their particular ideas, homes, necessities and terminology. the second one half provides the at the moment used structures for air flooring communications in continental and oceanic region. The 3rd half enlightens the reader at the rising and destiny verbal exchange structures and a few top examine tasks taken with this scope. ultimately, ahead of the realization, the fourth half offers a number of major demanding situations and learn instructions presently lower than investigation.

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6 MHz; this phenomenon is not used by the HFDL data link that operates at higher frequencies. The second phenomenon is based on the properties of the ionosphere layer of the atmosphere between 60 and 800 km where a partial ionization of gases is observed. Refraction of electromagnetic waves in the HF range within the ionosphere allows propagation over long distances. 20. HF propagation through the ionosphere Propagation conditions are, however, mainly conditioned by the solar activity, including sunspot cycle peaks, and several atmospheric layers are involved: D (60–90 km), E (90–150 km), F1 (150–250 km) and F2 (250– 400 km).

SATCOM SATCOMS provide a reliable, high-quality link practically over all regions of the globe. In the context of ATC, two systems are available: the Current Communication Radio Systems for Data Link 35 Inmarsat geostationary satellites, currently generations 3 and 4, and the Iridium low Earth orbit satellites. Both systems are approved by the ICAO, the first since 1995, the second since 2012. Civil aviation uses mainly the Inmarsat services, with about 2,000 equipped aircraft. Business aviation also widely used Inmarsat; Iridium offers itself as an attractive alternative.

After switching on, the AES terminal must first recover the parameters of the AMSS system. 6 kbit/s carriers is explored. As soon as a Psmc carrier is detected, information broadcasted by the corresponding Earth station can be received. 18. AMSS entry procedure Current Communication Radio Systems for Data Link 43 AMSS does not implement actual handover procedures as in mobile networks. However, it may be necessary for an AES to move from one satellite to another one (or from one regional beam to another one).

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