scholarly journals Detecting Electromagnetic Geographical Environment Changes Based on the Frequency-Intensity Curve

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Yi Huang ◽  
Mengyi Wang ◽  
Qianqian Qiu ◽  
Lizhi Miao ◽  
Haiping Zhang ◽  
...  
Keyword(s):  
Electromagnetic Radiation ◽  
Communication Systems ◽  
Human Life ◽  
Radiation Condition ◽  
Electromagnetic Environment ◽  
Intensity Curve ◽  
Monitoring Method ◽  
Geographic Environment ◽  
Spatial Positioning ◽  
Frequency Intensity

Electromagnetic geographic environment is closely related to human life. With continuous popularization of public infrastructures and daily electronic instruments, such as electric power communication systems and household appliances, electromagnetic radiation sources have increased sharply in the geographic environment, which leads to increasingly serious electromagnetic radiation pollution. Thus, it is significant to monitor, evaluate, and analyze the electromagnetic radiation condition and explore its changing law in the environment. However, the traditional monitoring method can only detect anomalies within certain frequencies in the fixed stations. To fill this gap, this research first develops a vehicle-mounted electromagnetic environment monitoring system to collect both spatial positioning data and electromagnetic data of the whole frequency range. The acquired data are then used to construct the location-based frequency-intensity curve to reflect the variation of electromagnetic radiation at different frequency ranges. On this basis, a curve similarity measurement method is introduced to analyze the similarity of different curves, which is effective to diagnose time-varying sources from both global and local perspectives. This research provides a real-time mobile monitoring method, which is significant to know the dynamic variation of local electromagnetic environment and promotes subsequent comprehensive geographic analyses.

scholarly journals Enhancing V2X Communication Based on a New Comb-Pilot Estimation Approach

2016 ◽  
Vol 2016 ◽  
pp. 1-14
Author(s):  
Aymen Sassi ◽  
Yassin El Hillali ◽  
Atika Revenq ◽  
Faiza Charfi ◽  
Lotfi Kamoun
Keyword(s):  
Performance Evaluation ◽  
Communication Systems ◽  
Orthogonal Frequency Division Multiplexing ◽  
Performance Enhancement ◽  
Human Life ◽  
Ieee 802.11P ◽  
Vehicle To Vehicle ◽  
Pilot Symbols ◽  
Quality Of Transmission

Vehicle to Vehicle (V2V) and Vehicle to Infrastructure (V2I) communication systems, known as V2X technologies, have increasingly attracted attention in current research on road safety and traffic ergonomics. The performance evaluation of these communication systems is an important step before their potential integration and use in real systems. V2X communications are based on the IEEE 802.11p standard also known as Wireless Access in Vehicular Environment (WAVE). V2X can affect human life; therefore a deep study related to V2X performance evaluation should be done in order to be sure about the system reliability. In this context, we have elaborated a deep study related to the effect of transmission range on V2X communications by considering the terminal mobility. First, we have evaluated the performance of the PHY layer on the IEEE 802.11p using simulation. Secondly, we have conducted real case measurements using the Arada LocoMate Transmission system. The obtained results shows the necessity to optimize the quality of transmission in V2X communications. Consequently, we propose in this paper a new comb-pilot technique to enhance the quality of Orthogonal Frequency Division Multiplexing (OFDM) transmission. Our proposal consists in two new uses of the pilot subcarrier estimation technique in order to decrease the elevated bit error rate (BER). The quality of transmission (QoT) is first evaluated relating to the pilot symbol rearranged positions. Second, we proposed to optimize the QoT by adding two supplementary pilot symbols as it can offer better channel estimation results. Based on the performance evaluation of our proposal, it is confirmed that both of rearrangement and the adding of the pilot patterns lead to performance enhancement compared to baseline model (standardized one).

Experimental researches of the characteristics of antennas in the presence of electromagnetic screens

2021 ◽  
Author(s):  
A.V. Shlyahov
Keyword(s):  
Electromagnetic Radiation ◽  
Electromagnetic Compatibility ◽  
Confined Space ◽  
Electromagnetic Environment ◽  
Innovative Technologies ◽  
Limited Application ◽  
Interference Frequency ◽  
Spaced Antennas ◽  
Experimental Researches ◽  
Antenna Systems

When placing various antenna systems in a confined space, one has to deal with a complex electromagnetic environment and insufficient isolation between the antennas. And, although the methods of ensuring electromagnetic compatibility of such groups of radio electronic means are well known, taking into account the peculiarities of the objects under consideration, they have very limited application. The use of innovative technologies developing in recent years, including the use of screens made of metamaterials, makes it possible to significantly expand the "limits of applicability" of these methods. As the studies have shown, the screen made of metamaterial has special characteristics in comparison with traditional screens, namely: at the operating frequency of the antenna, the screen is practically permeable to electromagnetic radiation, and at the interference frequency it becomes low-transparent and works as a reflector. The results can be used to improve isolation between closely spaced antennas, such as at the tops of towers or masts.

Effects of Electromagnetic Radiation of Mobile Phones on the Human Brain

2020 ◽  
pp. 97-120
Author(s):  
Junaid Ahmad Malik
Keyword(s):  
Human Brain ◽  
Electromagnetic Radiation ◽  
Mobile Phones ◽  
Human Life ◽  
Well Being ◽  
Car Accidents ◽  
Brain Barrier Permeability ◽  
Biological Impacts ◽  
Mind And Brain ◽  
The Mind

With the expanding use of wireless cellular networks, concerns have been communicated about the possible interaction of electromagnetic radiation with the human life, explicitly, the mind and brain. Mobile phones emanate radio frequency waves, a type of non-ionizing radiation, which can be absorbed by tissues nearest to where the telephone is kept. The effects on neuronal electrical activity, energy metabolism, genomic responses, neurotransmitter balance, blood–brain barrier permeability, mental psychological aptitude, sleep, and diverse cerebrum conditions including brain tumors are assessed. Health dangers may likewise develop from use of cellular communication, for instance, car accidents while utilizing the device while driving. These indirect well-being impacts surpass the immediate common troubles and should be looked into in more detail later on. In this chapter, we outline the possible biological impacts of EMF introduction on human brain.

scholarly journals Mawewangsalan sebagai Media Komunikasi Masyarakat Abang Batu Dinding Kecamatan Kintamani Kabupaten Bangli

2020 ◽  
Vol 15 (1) ◽  
pp. 9
Author(s):  
I Wayan Yudhasatya Dharma ◽  
Ulio SM
Keyword(s):  
Social Life ◽  
Communication Systems ◽  
Human Life ◽  
Communication Process ◽  
Verbal Code ◽  
Educational Values ◽  
Figures Of Speech ◽  
Community Behavior ◽  
The Social ◽  
The Impact

<p>Human life cannot be separated from a communication, because human is a social creature whose lives depend on one another and communication is an intermediary between humans with one another. Through communication the attitudes and feelings of a person or group of people can be understood by other parties. In proportion to communication and language, a culture called Mawewangsalan emerged, which of course contained both elements, namely the use of language in communication systems as outlined into an art, namely the art of spoken words. Mawewangsalan culture is found in Abang Batu Dinding Village, Kintamani District, Bangli Regency. Mawewangsalan related to the form and nature in communication community in Abang Batu Dinding are two sentences that experience reduplication (lengkara kalih palet). The first sentence is like an insinuation, about heart of someone who says it, but has a hidden meaning behind words that are said. The second sentence is the true meaning of intend words. based on its nature Mawewangsalan can be divided into three, namely are jokes, advice, and figures of speech.<br />The process of communication in Mawewangsalan conducted by the community in Abang Batu Dinding Village takes place in every situation and every place in the community's social environment. Mawewangsalan as a form of communication process in life of the community of Abang Batu Dinding Village has communication elements namely communicator, verbal code, and non-verbal code. In community of communication Mawewangsalan in Abang Batu Dinding Village has a cognitive impact, because in Mawewangsalan there are several things of educational values are contained. Affective effects also occur in this authority because it is able to influence attitudes and paradigm of people. As well as the impact of behavior is the next impact associated that changes in community behavior caused by the process of Mawewangsalan in the social life of the community.</p>

scholarly journals METHODS FOR ASSESSMENT AND FORECASTING OF ELECTROMAGNETIC RADIATION LEVELS IN URBAN ENVIRONMENTS

2021 ◽  
Vol 11 (1) ◽  
pp. 24-27
Author(s):  
Denys Bakhtiiarov ◽  
Oleksandr Lavrynenko ◽  
Nataliia Lishchynovska ◽  
Ivan Basiuk ◽  
Tetiana Prykhodko
Keyword(s):  
Electromagnetic Radiation ◽  
Radio Channel ◽  
Technical Information ◽  
Information Leakage ◽  
Urban Environments ◽  
Radio Interference ◽  
Structural Diagram ◽  
Electromagnetic Environment ◽  
Acoustic Information

Methods for synthesis a structural diagram of the processes for detecting and locating technical information leakage channels are analysed. Software for defining a controlled room zone was also presented. A proprietary approach to search the electromagnetic environment under radio interference has been developed to detect devices for unauthorized control of acoustic information using microphones and transmission of this information using a radio channel.

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