RELIABLE PARAMETRIC FILTERING FOR VIDEO SYSTEM NOISE IMMUNITY

Safin R.T. Amreev M.B. Pavlova T. Garmashova Y. Satimova Y. Serikov T.G.
28 February 2023 Little Lion Scientific

Journal of Theoretical and Applied Information Technology
2023 #101 Issue 4 1487 - 1499 pp.

The article discusses issues of robust signal filtering by a newly developed method devoid of the following disadvantages of known systems, namely: - working only with a fixed spectrum of the input signal; - inability to operate in signal processing systems with a changing spectrum; - narrow band. The filtering method is based on: - elimination of operation at a single fixed frequency and the possibility of working in systems with a changing spectrum is achieved by using a clock pulse generator, the frequency of which varies depending on the width of the input signal spectrum due to the use of frequency-dependent coefficients; - elimination of the lack of narrowband, which is achieved by using a signal spectrum width analyzer and a nonlinear variable filter capacitance (varicap) depending on the width of the signal spectrum. The substantiation of the proposed method is given, which allows processing signals with varying spectrum width, increasing their noise immunity and reducing the level of pulse interference, including in video surveillance and television systems. Modeling and experimental studies have been carried out to confirm the operability of this method.

Bandwidth Changing , Nonlinear Filter , Robust Filtering , Video Pulse

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Kazakh University of Transport Communications, Almaty, Kazakhstan
Almaty University of Power Engineering and Telecommunications named after Gumarbek Daukeyev, Almaty, Kazakhstan
Kazakh Agrotechnical University named after S.Seifullina, Astana, Kazakhstan

Kazakh University of Transport Communications
Almaty University of Power Engineering and Telecommunications named after Gumarbek Daukeyev
Kazakh Agrotechnical University named after S.Seifullina

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