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  5. Immunity analysis of doppler navigator with automatic bandwidth adjustment of narrowband filter

Immunity analysis of doppler navigator with automatic bandwidth adjustment of narrowband filter

V.V. Pechenin, K.A. Scherbina, M.A. Vonsovich, J.V. Syedina, K.P. Msallam
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The method of noise immunity improvement based on Doppler tracking navigator with automatic bandwidth control of narrowband filter included into servo feedback circuit of tunable heterodyne is offered and analyzed. The specific predicted energy gain parameters of the tracking meter with fixed band of narrowband filter and tunable bandwidth are obtained and compared to the broadband non-tracking meter based on the frequency meter of zeros counter.
Keywords: tracking system, fluctuations, feedback oscillator, frequency, phase