Результаты поиска по 'digital filter':
Найдено статей: 4
  1. Editor’s note
    Computer Research and Modeling, 2024, v. 16, no. 7, pp. 1533-1538
  2. Aksyonov K.V., Alekseev V.P.
    Digital signals filtering in continuous entry data mode operation
    Computer Research and Modeling, 2012, v. 4, no. 1, pp. 55-61

    The article is dedicated to choose of method for digital signal filtering with continuous 'on-line' data entry and to use of filtration algorithm based on the fast wavelet transform for special problem.

    Keywords: digital signal, filtering, wavelet transform.
    Views (last year): 6. Citations: 7 (RSCI).
  3. Chubatov A.A., Karmazin V.N.
    The stable estimation of intensity of atmospheric pollution source on the base of sequential function specification method
    Computer Research and Modeling, 2009, v. 1, no. 4, pp. 391-403

    The approach given in this work helps to organize the operative control over action intensity of pollution emissions in atmosphere. The approach allows to sequential estimate of unknown intensity of atmospheric pollution source on the base of concentration measurements of impurity in several stationary control points is offered in the work. The inverse problem was solved by means of the step-by-step regularization and the sequential function specification method. The solution is presented in the form of the digital filter in terms of Hamming. The fitting algorithm of regularization parameter r for function specification method is described.

    Keywords: atmospheric pollution, digital filter.
    Views (last year): 2.
  4. Deev A.A., Kalshchikov A.A.
    Coherent constant delay transceiver for a synchronous fiber optic network
    Computer Research and Modeling, 2023, v. 15, no. 1, pp. 141-155

    This paper proposes the implementation of a coherent transceiver with a constant delay and the ability to select any clock frequency grid used for clocking peripheral DACs and ADCs, tasks of device synchronization and data transmission. The choice of the required clock frequency grid directly affects the data transfer rate in the network, however, it allows one to flexibly configure the network for the tasks of transmitting clock signals and subnanosecond generation of sync signals on all devices in the network. A method for increasing the synchronization accuracy to tenths of nanoseconds by using digital phase detectors and a Phase Locked Loop (PLL) system on the slave device is proposed. The use of high-speed fiber-optic communication lines (FOCL) for synchronization tasks allows simultaneously exchanging control commands and signaling data. To simplify and reduce the cost of devices of a synchronous network of transceivers, it is proposed to use a clock signal restored from a data transmission line to filter phase noise and form a frequency grid in the PLL system for heterodyne signals and clock peripheral devices, including DAC and ADC. The results of multiple synchronization tests in the proposed synchronous network are presented.

    Keywords: FPGA, FOCL, PLL, subnanosecond time synchronization, single time scale, two-way synchronization method, clock recovery, diversity in-phase clock network, generation of ADC and DAC clock signals.

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