The article is devoted to the problem of operational artillery fire adjustment using trajectory meters at the starting position. Such meters combined with ballistic calculations make it possible to adjust fire and change position even before the hitting the targetand without the involvement of gunners. The technical side of the problem consists in more attractive signal characteristics of the centimeter range meters, but unacceptable for practical use of their dimensions.
The article is devoted to the problem of designing frequency tracking devices in a complex signal and noise situation. The article presents a mathematical model of the device, which takes into account possible structural and parametric changes of the device, changes in the frequency of the input signal, its angular modulation and time-varying noise level in the input mixture. Developed and described software application for the analysis of this model allows you to quickly change the values of parameters and monitor the response of the device to changes in the input signal.
The goal of this paper is an experimental measurement of the frequency response of the software phase-locked loop (PLL) transfer function using frequency modulated signals.