Signal analysis: time, frequency, scale and structure
Mathematical approach to problems in signal interpretation with using the methods for texture identification, segmentation, template matching, pattern recognition. Fundamental basics about analog and discrete signals, linear systems, Fourier transforms.
Подобные документы
Are given the method of determination of angular parameters, which is used in micromechanical inertial-satellite systems, constructed by the method of compensation or based on the reduced Kalman filter. Measurement errors of angles are investigated.
статья, добавлен 22.12.2016Analysis of the occurrence of specific situations in flight. Consideration of the process of applying the methods of system control surfaces to prevent a catastrophic situation in the transition. The study of active fault tolerant control scheme system.
статья, добавлен 26.06.2016Global Positioning System as one of history's most exciting and revolutionary developments. Use of this technology in the aviation, automotive and transport industry. Detect, decode, process satellite signals - the main functions of GPS receivers.
статья, добавлен 10.10.2016The investigation of the state of EGNOS Approach with Vertical guidance for Europe. EGNOS performance parameters are described in terms of accuracy, integrity, availability and continuity. The established results confirm the need for the EGNOS service.
доклад, добавлен 21.05.2016- 105. Smart antenna application for satellite communication systems with space division multiple access
Two different beamforming approaches in space division multiple access for mobile satellite communications: switched-beam antennas and adaptive array antenna systems are considered. The hardware implementation of adaptive algorithm is considered as well.
статья, добавлен 04.11.2018 Cascaded structure for adaptive digital filtering used with the Normalized Least Mean Square Algorithm (CNLMS) that can be obtained by the expansion of Laguerre's polynomials. The filter structure using the Normalized Least Mean Square Algorithm.
статья, добавлен 04.11.2018The boundary problem for eigenmodes in coaxial quad-ridged waveguides has been solved by the transverse field-matching technique. The formulas obtained provide possibilities to calculate cutoff wave numbers and electric and magnetic fields modes.
статья, добавлен 07.12.2016The concept and the basic principles of electronics as a scientific field, the history of its development and modern achievements. Classification and types of antennas, basics principles of operation. The materials used in the manufacture of antennas.
учебное пособие, добавлен 25.11.2013A case of an integrated-optical waveguide with statistic surface roughness. A case of optical nanofibers with random rough surface. The peculiarities of approximate solutions of vector electrodynamic problems. Evaluations of losses due to scattering.
статья, добавлен 04.11.2018Consideration of the linear model of the closed type speaker. Investigation of the sound velocity and diaphragm displacement. Major features method of organizing feedback electromechanical (EMOS) in loudspeakers. The main characteristics of the feedback.
статья, добавлен 21.06.2016Понятие, характеристика и архитектура WiMAX. Структура и формирование OFDMA (Orthogonal Frequency Division Multiple Access), распределение поднесущих. Обеспечение качества обслуживания. Управление мощностью и безопасностью. Передача вызова (хэндовер).
курсовая работа, добавлен 09.04.2010Familiarization with the concept of field-effect transistors. Laying out circuit boards and mounting RF devices. Classes of operation, forms of modulation, biasing, and operating in a pulse mode. The basic factors affecting low power amplifier design.
учебное пособие, добавлен 25.11.2013Simulation of a homogeneous linear array using a matrix of inverse-normalized least average squares for adaptive beam formation with a minimum of the bit error rate. Beam shaping with digital modulation of 16 quadrature amplitude modulation points.
статья, добавлен 04.11.2018A broadband coherent orthomode converter based on a coaxial four-ribbed waveguide for a frequency band of 3.4-5.4 GHz was developed. Each element of the design was separately optimized with CST Microwave Studio. Final modeling of characteristics.
статья, добавлен 29.09.2016Wireless networks for sparsely populated rural areas of the Far North. Spatial pattern optimization of the developed wireless network based on the variant probability method. The problem of choice of place for access points of the growing network.
статья, добавлен 13.02.2018The IEC 61850 standard is the key document for implementation of communication between protection IED and control center as well as communication of IEDs with one another. The IEC standard is support of Ethernet technology and international recognition.
статья, добавлен 23.06.2013Conventional space-vector modulation. Basics of a novel method of syznchronized pulsewidth modulation for voltage sours inverters. Main practical relevance of the proposed pulsewidth modulation method. Cancellation of undesirable common-mode voltages.
статья, добавлен 02.02.2019The path and loss - the dominant feature of the propagation environment. Operating frequency, antenna array size - one of the parameters, that plays a significant influence on overall system performance of the next generation wireless communications.
статья, добавлен 17.03.2022Uncooled infrared imaging arrays in semiconductors and semimetals. Thermal imaging with PbSnSe-on-Si linear arrays. Growing the IR sensitive layers directly on silicon would lead to much simpler and less expensive monolithic hetero-epitaxial structures.
статья, добавлен 28.06.2013A basic overview of the theory of planar antenna near-field measurements. Determination of far-field pattern from a near-field measurement. Advantages of this technique compared to far-field antenna measurement. Brief history of near-field scanning.
научная работа, добавлен 03.04.2012- 121. Plane wave diffraction by two-dimensional gratings of inductive and capacitive coupling elements
Frequency selective structures in the form of two-dimensional gratings with non-resonant elements are investigated. Expressions the main for the reflection and transmission coefficients for the gratings consisting of thin metal rectangles are obtained.
статья, добавлен 04.11.2018 Розгляд питання щодо наявності детермінованого зв’язку між кутовими параметрами складових сигналу з ортогональним частотним поділом (OFDM-сигналу). Виявлення аналітичного зв’язку між початковими фазами сигналів. Схематичне подання формування OFDM-сигналу.
доклад, добавлен 23.01.2018Предварительная обработка наблюдаемых на фоне шума сигналов при их спектральном анализе собственноструктурными методами с использованием метода SSA (singular spectral analysis) и предлагаемой модификации этого метода. Оценка дисперсии шума наблюдения.
статья, добавлен 01.03.2017Features of online communication, the main tools for organizing polite communication. Analysis of speech etiquette as a system of norms and rules of speech behavior. Implementation of several communication tactics. Emotional comfort in online communities.
статья, добавлен 11.03.2021Two large groups of sources of uncertainty at various stages of construction of neural networks. These groups are discussed in the article and recommend action’s for their reduction have been proposed. The process of diagnostic sand prognostication.
статья, добавлен 22.12.2016