Перегляд за автором "Chernogor, L. F."
Зараз показано 1 - 11 з 11
Результатів на сторінку
Варіанти сортування
Публікація Choi-Williams Analysis of the Non-linear Ultrawideband Signals(2008) Chernogor, L. F.; Lazorenko, O. V.; Vishnivetskiy, O. V.Choi-Williams analysis application for the non-linear ultrawideband signal describing was proposed. The advantages and the peculiarities of Choi-Wiliiams transform were discussed. The non-linear ultrawideband signal models in time domain were given. The Choi-Williams analysis for the analysis of the non-linear ultrawideband signals was performed.Публікація Digital analysis of the non-linear ultrawideband processes(2007) Chernogor, L. F.; Lazorenko, O. V.; Lazorenko, S. V.; Vishnivetsky, O. V.The continuous wavelet transform, the analytical wavelet transform, the digital wavelet transform and the Wigner transform are proposed to apply for the digital analysis of the non-linear ultrawideband processes. The advantages and the disadvantages of each transform being significant during that application are discussed. As the convincing example, the results of the analysis of the Earth’s magnetic field disturbances caused by the rocket “Proton” launch taken place 12 February 2000 at cosmodrome Baikonur (Kazakhstan) are considered.Публікація Fractal Analysis in Problems of the Applied Physics(Taras Shevchenko National University of Kyiv, 2022) Chernogor, L. F.; Lazorenko, O. V.; Onishchenko, A. A.For the researchers, a review of the existing mono-fractal analysis methods applied in different branches of modern applied physics is proposed. For each mono-fractal analysis method, some actual references allowing to study the method and to develope corresponding numerical realization are givenПублікація Fractal analysis in space physics(Taras Shevchenko National University of Kyiv, 2022) Chernogor, L. F.; Lazorenko, O. V.; Onishchenko, A. A.According to the non-linear and the system paradigms, many processes generated in open, non-linear, dynamical systems under influence of a powerful source of energy release are appeared to be short-time, ultrawideband, non-linear and fractal. In applied physics, there are a lot of such processes and such systems. Therefore, to investigate the fractal properties of the signals and processes generated in the open, non-linear, dynamical systems, the set of corresponding methods are needed. Namely such modern and effective methods had been united in fractal analysis. Suddenly, but these methods are often appeared to be quite unknown for the most part of researchers, which work in space physics. No doubt, this state should be changed.Публікація Fractal analysis of The fractal ultra-wideband signals(2015) Chernogor, L. F.; Lazorenko, O. V.; Onishchenko, A. A.; Karazin, V. N.The results of fractal analysis of the fractal ultra-wideband (FUWB) signals were proposed. With usage of the continuous wavelet transform the time-frequency structure of that signals was investigated. Calculating the box and the regularization dimensions for each model signal with various its parameters values, three different estimators were applied. The optimal estimations of the fractal dimension value for each FUWB signal model were defined.Публікація Multi-Fractal Analysis in Problems of the Applied Physics(Taras Shevchenko National University of Kyiv, 2023) Chernogor, L. F.; Lazorenko, O. V.; Onishchenko, A. A.According to the non-linear and the system paradigms, many processes generated in open, non-linear, dynamical systems under influence of a powerful source of energy release are appeared to be short-time, ultrawideband, non-linear and fractal. In the paper [1] published one year ago, we have introduced a short review of the existing mono-fractal analysis methods, which can be useful and quitly applicable for solving of the applied physics problems, where there are a lot of such processes and such systems. To investigate their fractal properties more extended, the multi-fractal analysis methods should be applied. Unfortunately, similar the monofractal analysis methods, these methods are often appeared to be quite unknown for the most part of researchers too.Публікація Second-Order Fractals in the Geospace Researches(Astronomy and Space Physics in the Kyiv University, 2023) Chernogor, L. F.; Lazorenko, O. V.; Onishchenko, A. A.According to the non-linear and the system paradigms, many processes generated in open, non-linear, dynamical systems under influence of a powerful source of energy release are appeared to be short-time, ultra-wideband, nonlinear and fractal. The geospace was shown to be a good example of such systems. Many processes caused in geospace by the non-stationary powerful sources of energy release have significant fractal properties. Therefore, the investigations of such properties seems to be actual and interestingПублікація System spectral analysis of The fractal ultra-wideband signals(2015) Chernogor, L. F.; Kravchenko, S. G.; Lazorenko, O. V.; Karazin, V. N.The theoretical basis and practical peculiarities of the system spectral analysis are briefly considered. The necessity and the expediency of simultaneously application of different linear and non-linear integral transforms during the system spectral analysis performance are explained. The system spectral analysis usage for investigations of the time-frequency structure of the fractal ultra-wideband signals is shown to be effective and useful.Публікація System Spectral Analysis of the Signals(2007) Chernogor, L. F.; Lazorenko, O. V.The new complex signal analysis method called as system spectral analysis and based on the simultaneous application of the set of linear and non-linear integral transforms is proposed. The abilities of the system spectral analysis at the sample of investigation of the unique natural phenomenon well known as the rogue wave are shown.Публікація System Spectral Analysis of the Ultrawideband Signals(2008) Chernogor, L. F.; Lazorenko, O. V.The new integrated signal analysis method called as system spectral analysis and based on the simultaneous application of the set of linear and non-linear integral transforms is proposed and realized. The abilities of the system spectral analysis at the sample of investigation of the terahertz electromagnetic pulse considered as ultrawideband (UWB) signal are shown.Публікація Wavelet Analysis of the Ultrawideband Signals(2008) Chernogor, L. F.; Lazorenko, O. V.; Lazorenko, S. V.The results of the wavelet analysis application to the ultrawideband (UWB) signal investigation are introduced. The continuous wavelet transform, the analytic wavelet transform, the discrete wavelet transform, the wavelet packets, the stationary wavelet transform and the Kravchenko-Rvachev analytic wavelets based on the atomic functions have been used to the analysis of the UWB signals and processes.