Method for the prediction of the frequency of airborne high-frequency circuits at high-altitude and long-distance communication
Dawang Xia
Abstract:During the test flight of civil aircraft, the prediction method recommended by ITU-R P.533 was used to predict the frequency of the high frequency(HF) system at the situation of the high-altitude and long-distance communication. There were many cases which the communication effect was lower than the design expectations. Through comparative analysis of test flight scenarios and scenarios recommended by ITU-R P.533, it is found that the flight altitude of the aircraft is a key factor affecting the accuracy of fr… Show more
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