Aerospace Instrument-Making Annotation << Back The efficiency increase of narrow radio systems information exchange of aircraft Kostyuk D.S. To increase the efficiency of information exchange narrowband radio aircraft, work the method of synthesis of a secondary communication channel based on a joint solution of the inverse and direct problems of optimal filtering in the frequency domain, which allows for the formation of simple equations and filtering of stochastic signal of the secondary channel. Main channel used to transmit the basic message with significant information capacity. Go to basic message should be classified aircraft crew talks with ground stations provide flight telemetry monitoring and control aircraft. The secondary channel may be designed to transmit associated messages having lower information capacity, eg sending standard messages authentication signaling verification etc. in the sight of the crew mode. As a result of solving the problems of optimal filtration general expressions for determination of the parameters of the secondary channel and filter selection, based on frequency method developed an algorithm for the channelizing of narrowband radio signals to simplify the synthesis of the channelizing system. In the simulation using mathematical packages found that the algorithm developed channelizing improves the efficiency of the voice channel information exchange systems of aircraft by 30 % without significant signal distortion of the main channel. Key words: secondary channel, selection filter, PSD, a narrowband signal, a model of the channelizing, radio, a voice channel. Contacts: E-mail: deniska29031@rambler.ru Pp. 59-68.