Synthesis of the channel for forced tuning of Doppler tracking filter
DOI:
https://doi.org/10.3103/S0735272715010057Keywords:
aircraft, low-pass filter, Doppler effect, precision, signal to noise ratio, electromagnetic waveAbstract
Results of a channel of forced frequency tuning of tracking Doppler filter development are presented, where control oscillator with external synchronization is applied. There is theoretical description, filter principal circuits, the method of development and realization of the frequency discriminator, providing better characteristics in compare to existing ones and approximately identical fluctuation errors in case of filtering coefficient of 15–20. Operating band of forced frequency tuning of the channel is 0.01–2 MHz in case of high linearity of discrimination characteristic at the frequency modification band of 0.8 and temperature stability of the slope 1.5% at the interval of temperatures from –60 to +60 °C. There are represented main analytical relations, suitable for practical calculation.
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