High resolution capability of adaptive antenna arrays for communication systems
We investigate comparison methods of different geometric configurations of adaptive antenna arrays for communications on purpose to estimate directions-of-arrival of several external signals. The investigated antenna configurations have four elements.
Подобные документы
The study of the pathogenic effect of electric fields of alternating current on biological systems (Drosophlla melanogaster) to substantiate the maximum permissible levels of electromagnetic radiation by creating new rapid methods using test objects.
статья, добавлен 29.09.2018- 27. Design of control signals for three phase matrix converter on the basis of double fourier series
The control signals for the frequency-phase matrix converter. The output control signal converters, on the basis of the expansion of space with the space. Methods of using the double Fourier series expansion of space and time independent variable.
статья, добавлен 22.03.2016 Hybrid Systems Definition. Characteristics of Distributed Energy Resources. Focus of a new Hybrid Systems Initiative. Hybrid Systems Premise. Value Propositions. Value Proposition - Enhanced Reliability. Evaluating an OPT Hybrids Program. THE SunDish.
презентация, добавлен 17.10.2014Directions of formation the main technical solutions to enhance the transmission capability of backbone network in this region through the development and implementation of facilities to determine the current values of stability margin in Russian UPS.
статья, добавлен 23.06.2013Terahertz emitters - polaritonbased devices, where signals are generated from transitions between upper and lower polariton branches or bosonic cascade lasers. Band diagram of the double quantum wells system. Energy diagram of the dipolariton system.
статья, добавлен 30.07.2016Investigation of the possibility of constructing relay protection in transient processes. Calculation of the single-phase short-circuit transient of the L-398 "Monchegorsk" line and the possibility of using an adaptive relay protection terminal.
статья, добавлен 30.04.2018In this paper we represent the distinguished laser interferometer technique that allows the wide sort of precise object displacements to be measured with the instrumental resolution up to 1 pm. Indicated the accuracy of reading of the interferometer.
реферат, добавлен 04.11.2018The dependencies of energy flow density and energy density on wave vector for different magnitudes of external magnetic field are analyzed. The sign of the Poynting vector in each plasma region is investigated. The velocity of energy propagation is found.
статья, добавлен 27.07.2016Cases of using aptamer sensors and a highly sensitive bioluminescent reporter regulated by obelin photoprotein to detect diagnostically important targets in the blood of patients are described. Prospects for the development of analytical systems.
статья, добавлен 14.04.2022A Generators of the Poincare Group for Electromagnetism. Derivation of the Center-of-Energy Law. Conservation Laws in the Presence of External Forces on Particles. Quasi-static Changes for Stationary Systems. Single Point Mass. Parallel Plate Capacitor.
статья, добавлен 11.09.2012Digital signal processing algorithms for nuclear particle spectroscopy. Algorithms for a digital shaping-filter amplifier, for a digital pile-up elimination scheme and for ballistic deficit correction were investigated using a high purity detector.
статья, добавлен 24.09.2013The qualitative scheme of the formation of ferromagnetic grains in the matrix with non-magnetic layers of condensation. Analysis of the principle of operation of the automated system for research thermoresistive properties of thin film materials.
статья, добавлен 30.07.2016Split-phase symmetrical motor drive on the base of two voltage source inverters, controlled by algorithms of synchronized pulse width modulation, has been investigated. Simulation results are presented for dual three-phase power conversion systems.
статья, добавлен 02.02.2019Characteristics of the features combined heating systems based on modules with infrared heating, bioreactors and solar collector. Research and analysis of key opportunities to use Thermosiphon solar collector for thermal control in the bioreactor.
статья, добавлен 24.02.2016Features of the influence of high-frequency laser radiation on the characteristics of tungsten graphene. An analysis of the causes of the gap in graphene creates a gap in the band of the spectrum in the conditions of a high-frequency electromagnetic wave.
статья, добавлен 23.12.2016Causes of accidents on power lines depending on the voltage class. Analysis of electrical equipment connected to high-voltage lines. Study of leaks in transition insulators of network wires at transformer substations, location of trees, bird flocks.
статья, добавлен 07.12.2024Analysis of differential equations encountered in various applications, which are interpreted as equations in graphs. Using graph properties to create a high-quality theory of such equations and methods for their solution. Description of the graph struc
статья, добавлен 12.08.2020Algorithms for flat fading radio channel estimation was investigated. Namely algorithms based on AR-model with sliding window and without sliding window, algorithm that uses Discrete Wavelet Transform and that uses Discrete Wavelet Packet Transform.
статья, добавлен 04.11.2018Review the basics of electrical engineering. Characteristics of methods for determining the properties of the electrical systems and fluctuations of the electromagnetic wave. Theoretical information in conjunction with the examples of solving problems.
лекция, добавлен 11.10.2014Elaboration of an opto-electronic scheme. An innovated opto-electronic system where integrated-optical sensor, photodetectors, microelectronic comparison scheme, analog-to-digital converter are integrated with the aim to achieve a high sensitivity.
статья, добавлен 07.11.2018Photothermal effect of laser radiation on frozen biotissues. Тissue cryopreservation with using cooling, frizzing, laser heating. Тhe self-propagating high temperature synthesis. Using of nanoparticles high photo-thermal effect for laser of biotissues.
статья, добавлен 21.06.2018Calculation of reliability as an object’s complex. The procedure of setting the appropriate indicators using methods based on their definition by reference data about the object elements’ and the analog objects’ reliability, data on material properties.
статья, добавлен 29.11.2016In the visible range observed at high excitation levels originates from two-electron recombination transitions in the hole liquid. The critical temperature of the dipolar is substantially less than the spatially. The binding energy of free biexcitons.
статья, добавлен 30.07.2016A method of with super resolution the waveguide irregularities on the basis of the waveguide light scattering in the presence of noise is presented. Creating waveguides with a very low level of losses on scattering on the waveguides irregularities.
статья, добавлен 04.11.2018Structure-phase state, magnetic resistance investigation of Ni/Au/Ni film systems was carried out. Studying dimensional magnetic resistance. It was shown that in Ni/Au/Ni film systems is preferentially presents magnetic resistance in perpendicular pane.
статья, добавлен 30.07.2016