PROFESIONALNI DETEKTOR BEŽIČNIH SIGNALA (PSD-100) – PREVENCIJA VISOKOTEHNOLOŠKIH PREVARA

2019 ◽  
Vol 34 (06) ◽  
pp. 1100-1103
Author(s):  
Bojan Lungulov ◽  
Vladimir Rajs ◽  
Vladimir Milosavljević
Keyword(s):  
Electromagnetic Field ◽  
Wireless Communication ◽  
Field Strength ◽  
Cellular Phone ◽  
Graphical Display ◽  
Radio Communications ◽  
Wide Range ◽  
Measurement Results ◽  
Electromagnetic Field Strength ◽  
Main Operating

In this paper the implementation of the device for wireless communication detection is presented. The system measures RF electromagnetic field strength for frequencies from 1 MHz up to 10 GHz and has wide range of adjustable sensitivity. Implemented device provides detection of cellular phone activities in all three main operating bands, and detection of other types of wireless communication such as radio communications, Bluetooth, Wi-Fi and so on. The device presents an improvement of a previous version of the detector UD-100. Measurement results are displayed on graphical display providing easy user readings and device operating. Device is operated by four touch sensitive keypads, the system is battery powered, portable and can fit in any pocket.

INSTRUMENTAL METHODS OF SHIPBOARD VHF RADIO COMMUNICATIONS QUALITY MEASURING

2021 ◽  
Author(s):  
М.Б. ПРОЦЕНКО ◽  
В.В. ГРОМОЗДИН ◽  
К.В. ИЕВЛЕВ ◽  
М.С. КОЗУБ
Keyword(s):  
Electromagnetic Field ◽  
Field Strength ◽  
Signal To Noise Ratio ◽  
Radio Channel ◽  
Signal To Noise ◽  
Radio Communications ◽  
Useful Signal ◽  
Electromagnetic Field Strength ◽  
Radio Equipment ◽  
Instrumental Methods

В работе рассмотрены такие характеристики судового ОВЧ радиоканала, как напряженность поля полезного сигнала и ЭДС полезного сигнала на входе радиоприемного устройства (РПУ),которые являются функциями от отношения сигнал/шум на выходе (входе)РПУ. Введено понятие фактической чувствительности РПУ. Определены количественные значения анализируемых характеристик применительно к типовому судовому радиооборудованию и шумовой обстановке вблизи судовой антенны. The article considers such characteristics of the shipboard VHF radio channel as the electromagnetic field strength of the useful signal and the EMF of the useful signal at the input of the receiver, which are functions of the signal-to-noise ratio at the output (input) of the receiver. The concept of the actual sensitivity of the receiver is introduced. The quantitative values of the analyzed characteristics are determined in relation to the typical ship radio equipment and the noise environment near the ship antenna.

Electromagnetic Field Strength Levels Surrounding Electronic Article Surveillance (EAS) Systems

2000 ◽  
Vol 78 (1) ◽  
pp. 21-27 ◽  
Author(s):  
C. Harris ◽  
W. Boivin ◽  
S. Boyd ◽  
J. Coletta ◽  
L. Kerr ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Field Strength ◽  
Electromagnetic Field Strength

PROCEDURE FOR ESTIMATING THE BOUNDARY DISTANCE OF SHORE RADIO STATIONS IN VHF RANGE FOR THE SHORE-TO-SHIP DIRECTION

2021 ◽  
Author(s):  
М.Б. ПРОЦЕНКО ◽  
В.В. ГРОМОЗДИН ◽  
М.С. КОЗУБ
Keyword(s):  
Electromagnetic Field ◽  
Field Strength ◽  
Radio Communication ◽  
Radio Stations ◽  
Noise Environment ◽  
Electromagnetic Field Strength ◽  
Radio Equipment ◽  
Boundary Distance

Сформулирована и детализирована методика оценивания граничной дальности береговых ОВЧ радиостанций в направлении Берег-Судно, которая основана на зависимостях напряженности поля, полученных эмпирическим путем. Определены численные значения граничной дальности ОВЧ радиосвязи применительно к типовому судовому радиооборудованию и шумовой обстановке вблизи судовой антенны. Проведена оценка максимальных допусков определения граничной дальности ОВЧ радиосвязи. The procedure for estimating the boundary distance of the shore VHF radio stations in the shore-to-ship direction, which is based on the dependences of the electromagnetic field strength obtained empirically, has been formulated and detailed. Numerical values of the boundary distance of VHF radio communication in relation to typical ship radio equipment and the noise environment near the ship's antenna are determined. The estimation of the maximum tolerances for determining the boundary distance of VHF radio communication is carried out.

High Voltage Transmission Line Electromagnetic Environment Analysis and Research on the Human Body Biological Effect

2014 ◽  
Vol 602-605 ◽  
pp. 2637-2640
Author(s):  
Ao Wang ◽  
Yu Hui Zhu ◽  
Rui Guan ◽  
Zi Wei Chen ◽  
Lian Qing Zhao
Keyword(s):  
Electromagnetic Field ◽  
Field Strength ◽  
High Voltage ◽  
Transmission Lines ◽  
Biological Effect ◽  
Electromagnetic Environment ◽  
Environment Analysis ◽  
High Voltage Transmission Line ◽  
Electromagnetic Field Strength ◽  
Ac Transmission

The research on 1000kV UHV AC transmission lines is to analysis the electromagnetic field strength around these lines, as well as the electromagnetic energy people absorbed at different distances under the lines. What’s more, suggestions for a further study and standards to improve are provided in the paper.

On Medium Frequency Induction Heating Applied in the Energy-Saving Light Industrial Equipments and its Electromagnetic Radiation

2011 ◽  
Vol 697-698 ◽  
pp. 533-536 ◽  
Author(s):  
Zi Qiang Zhang ◽  
G.Y. Yu ◽  
S.B. Chen ◽  
Z.D. Zheng ◽  
R.D. Li ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Field ◽  
Field Strength ◽  
Energy Saving ◽  
Induction Heating ◽  
Critical State ◽  
Industrial Equipment ◽  
Medium Frequency ◽  
Experimental Conditions ◽  
Electromagnetic Field Strength

Increasingly, induction heaters are being widely applied to the energy-saving light industrial equipment. But their electromagnetic radiation’s impact on the environment can’t be ignored. In the paper, several medium frequency induction heaters had been studied under different experimental conditions using E61 electromagnetic field strength analyzer, and as its supplement, the racetrack-coils induction heater had been simulated using ANSYS. According to ICNIRP guidelines, the results show that their radiation is generally in critical state, and magnetic field strength is superstandard in some areas. And countermeasures to the problems are advised.

Documenting Radiated Electromagnetic Field Strength in the Hospital Environment

1999 ◽  
Vol 24 (2) ◽  
pp. 124 ◽  
Author(s):  
Sean M. Boyd ◽  
William S. Boivin ◽  
John N. Coletta ◽  
Charles D. Harris ◽  
Lesley M. Neunaber
Keyword(s):  
Electromagnetic Field ◽  
Field Strength ◽  
Hospital Environment ◽  
Electromagnetic Field Strength
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