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With the methods of geometry, sites' structure of HF air-to-ground communications and the sites-setting methods are studied. It is intent on putting forward ways and means to allocate sites of HF air-to-ground communications efficiently. After proving the theory that coverage efficiency of circles with the same radius is higher than the coverage efficiency of circles with different radiuses, the optimal...
With the excellent ability of anti-jamming, the traditional transform domain communication system (TDCS) is limited in wide application due to the same electromagnetic environment between the transmitter and the receiver. Based on the traditional TDCS, a long-distance aviation transform domain communication system (LDA-TDCS) is presented to realize the aviation communication under complex electromagnetic...
According to the characteristics of present high frequency (HF) air-ground communications, this paper not only puts forward the function relation between aircraft flying position and time, but also proposes a new frequency choosing strategy according to SNR sorting. This new strategy based on ITS area SNR data ascertains the distribution of every channel's SNR along time on the route through interpolated...
As the further progress of ad hoc networks, people begin to study its application in aeronautical communications. Some achievements have been made in foreign countries, but in our country there are no studies yet. Other than common usage, in aeronautical communication, the nodes have a higher speed and a lower node density and the frequency is the U/VHF. Among these characters, the low node density...
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