Antenna system for monitoring radiofrequency spectrum
The developed antenna system for use in measuring equipment. A technical description of the antenna system. The results of measurements and their comparison with the results obtained with the help of standard antennas included in the measuring equipment.
Подобные документы
- 101. Attenuation of electromagnetic waves by vegetation canopies in the 100–10000 MHz frequency band
The role and significance of attenuation by vegetation in remote sensing. The model of vegetation as a continuous medium. Effective dielectric constant of vegetation. Methods of measurements of attenuation. The directions of future research needs.
статья, добавлен 04.11.2018 The study the energy spectra dynamics and pitch-angle distribution of high energy electrons, protons, alpha-particles radiation belts during magnetospheric storms and substorms and exposure of the Earth magnetosphere to the high speed flows of sun wind.
статья, добавлен 22.12.2016Компьютерная сеть как система связи между двумя или более компьютерами. International Telecommunications Union-Telecommunication Standard Sector. Международные организации, разрабатывающие стандарты телекоммуникаций. Институт инженеров по электротехнике.
презентация, добавлен 30.01.2015Presents new and improved method of marking speech signals. The method is based on the use condition Gelder for the speech signal spectrum. Features of the method are its accuracy during decoding of the watermark and independence from the source data.
статья, добавлен 20.01.2017Diagram of the energy spectrum and impurity states for doped PbTe-based alloys. Temperature dependence of the relative resistance for PbTe(In) films. Photoelectric instabilities in a film induced by a combined effect of illumination and slight heating.
статья, добавлен 28.06.2013Need to find optimal solutions in the design and deployment of wireless networks. The impact of environmental parameters on the transmission channel networking standard Wi-Fi, to enable access to new information and communication services formats.
статья, добавлен 24.06.2016- 107. 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 A 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 29.09.2016Familiarization with the scheme of passive and active transducer with mode of preset voltage. Characterization electric models of capacitive sensors at alternating current. Analysis of electrophysical parameters monitoring of nonelectric products.
статья, добавлен 30.01.2016Study of the backdoor problem as a method of bypassing standard authentication procedures, organizing unauthorized remote access to a computer, to text documents, while remaining unnoticed. Analysis of modern forms and functions of backdoor invasion.
статья, добавлен 28.10.2020The 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 07.12.2016Cascaded 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 04.11.2018Method for obtaining optimal signal spectra. Features of construction of optical test tables for Ultra High Definition Television (UHDTV). spectrum parameters using white type D65 source. Selection of material for colorimetric assessment quality UHDTV.
статья, добавлен 21.06.2016New approach to remote sensing, which combines the spectral and polarization-metric characteristics of signals. Theory for the case of rain monitoring by an active monostatic radar. Examples of the spectral polarimetric approach in various fields.
статья, добавлен 14.09.2016A review of existing models and methods of applied problem solving is performed. The necessity of developing of fuzzy models of mobile objects is shown. A new formal model of mobile objects control as minimization of the control error is developed.
статья, добавлен 29.07.2016- 116. Determining the operating distance of air ultrasound range finders: calculations and experiments
Definition operating distance of air ultrasound range finders by using the modified radar equation. Experimental verification of the developed computational procedure is discussed, and calculations of the relevant terms for this case are presented.
статья, добавлен 30.08.2016 Wireless 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 study of the structure of the developed dynamic link library of routines for processing radar ( EISCAT) incoherent scatter signal simulator with the help of complex software, GUISDAP and MATLAB, and examples of its application in Ukraine in our time.
статья, добавлен 30.10.2016Support for the dramatic effect of presenting information that is emotional in nature, which becomes an element of the communication strategy. Description of factors that act as an alternative source of information. The focus of information transmission.
статья, добавлен 30.01.2021Application of advanced artificial intelligence methods to improve driving, increase safety and efficiency of road traffic. Performance evaluation of improved "You Only Look Once" image set models developed for traffic light detection and recognition.
статья, добавлен 05.09.2024Measures to ensure the quality of technical operation of digital terrestrial television broadcasting. Requirements for quality maintenance terrestrial television. The permissible norms a phase noise. The calculation algorithms for digital switching.
статья, добавлен 26.03.2016Dimensions of culture influencing interpersonal relationships and communication. The role of protocol and etiquette components in intercultural communication. Components of Arab etiquette. Comparison of cultural traditions of Arabs and Europeans.
статья, добавлен 22.07.2023The potential of using smartphone sensor data (accelerometer and compass) in order to track the location of the person holding the device using dead reckoning algorithms. Two approaches - assess their performance in different real life inspired scenarios.
статья, добавлен 23.06.2016The mathematical foundation of filtration technology of useful information from noises in the radiotechnical and radiocomputer systems on the basis of the stochastic modification of Gilbert-Huang transformation has been developed in the article.
статья, добавлен 27.07.2016Description of crowdsourcing technologies of public communication in global and regional modern political spaces. Their significance as a means of peaceful, non-violent conflict resolution and reduction of social tensions in various parts of the world.
статья, добавлен 21.01.2022