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The cause-effect relations between the levels of pulsations of the antenna system, caused by main rotor rotating of the helicopter, and the probability of the bit error occurring in the digital data transmission channels were established. Graph-analytical method of error probability estimation was developed.
The paper shows that the system "A Standard Omnidirectional Antenna — Metal Body of the Helicopter" becomes non-parametric system at rotation of main rotor. Under this condition the effective height of the antenna is the parametric factor. Distortions of the spectrum of radio signals on the input of the standard antenna are consequence of periodic changes of the effective antenna height...
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