Thermal risks due to land vehicle radioelectric exposure: Results of Thales research and study for military purpose

Alcaras, Alain; Frère, Jeanne

doi:10.1109/emceurope.2017.8094719

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…To assess whether such intensity values would induce SAR and E-field values inside the body that exceed the BRs, the presence of the military operator, partially standing outside the vehicle, through a manhole, in close proximity to the radiating monopole, was considered. As a first step, the unequipped operator was modeled (scenario b) similarly to what was done in other dosimetric studies (3,21). The induced Efield inside the body was estimated to be up to 12 V/m, leading to SAR wb and a peak SAR 10Avg in the order of 10 −3 mW/kg, well below the limits of 0.4 and 10 W/kg, respectively (6, 7, 9), thus finding that noncompliant E-field induced compliant SAR wb and peak SAR 10Avg , as also found by Alcaras and colleagues in 2017, under similar exposure condition (21).…”

Section: Discussionmentioning

confidence: 99%

Numerical Evaluation of Human Body Near Field Exposure to a Vehicular Antenna for Military Applications

Colella

Biscarini

Meis³

et al. 2022

Front. Public Health

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BackgroundThe use of electromagnetic (EM) technologies for military applications is gaining increasing interest to satisfy different operational needs, such as improving battlefield communications or jamming counterpart's signals. This is achieved by the use of high-power EM waves in several frequency bands (e.g., HF, VHF, and UHF). When considering military vehicles, several antennas are present in close proximity to the crew personnel, which are thus potentially exposed to high EM fields.MethodsA typical exposure scenario was reproduced numerically to evaluate the EM exposure of the human body in the presence of an HF vehicular antenna (2–30 MHz). The antenna was modeled as a monopole connected to a 3D polygonal structure representing the vehicle. Both the EM field levels in the absence and in the presence of the human body and also the specific absorption rate (SAR) values were calculated. The presence of the operator, partially standing outside the vehicle, was simulated with the virtual human body model Duke (Virtual Population, V.3). Several exposure scenarios were considered. The presence of a protective helmet was modeled as well.ResultsIn the area usually occupied by the personnel, E-field intensity radiated by the antenna can reach values above the limits settled by international safety guidelines. Nevertheless, local SAR values induced inside the human body reached a maximum value of 14 mW/kg, leading to whole-body averaged and 10-g averaged SAR values well below the corresponding limits.ConclusionA complex and realistic near-field exposure scenario of the crew of a military vehicle was simulated. The obtained E-field values radiated in the free space by a HF vehicular antenna may reach values above the safety guidelines reference levels. Such values are not necessarily meaningful for the exposed subject. Indeed, SAR and E-field values induced inside the body remain well below safety limits.

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Section: Discussionmentioning

confidence: 99%

Numerical Evaluation of Human Body Near Field Exposure to a Vehicular Antenna for Military Applications

Colella

Biscarini

Meis³

et al. 2022

Front. Public Health

View full text Add to dashboard Cite

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“…The higher E-Field value probably influenced by the factors such as the antennas distances to personnel position, vehicle dimensions, windows, material, and ground surrounding [6,7]. Others study on military vehicle RF radiation levels carried out by Alcaras and Frere [8] shown the E-Field results range 1200 V/m from the 125 W HF transmission and 200 V/m from 50 W VHF transmission respectively. The RF radiations levels were measured 1 m from both antennas.…”

Section: Total Exposure Assessment -Hf and Vhf Antennamentioning

confidence: 99%

Near Field Radio Frequency Radiation Hazard on Military Armoured Vehicle - Approach to a Dose Assessment

Jasman¹,

Jamaludin²,

Yusof

2018

IJAME

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The level of radio frequency (RF) electromagnetic field emitted from a military armoured vehicle antenna was investigated to identify possible adverse health effect on personnel, especially in the near field region. Both E-Field and H-Field radiations levels emitted from antenna were recorded by emphasising on the main areas of crew working station. To date, open literature on military vehicle and equipment RF radiation hazard safety assessment has limited numbers of discussion especially on RF source distance, location and mode of power transmission. In this investigation, RF levels from two radio antennas were measured, high frequency (HF) and very high frequency (VHF) with the low and high-power transmission. Measurements were taken in two distinct locations namely; commander and gunner respectively with three different conditions; open hatch, close hatch and open hatch with standing crews which representing the normal and combat situations. The measured E-Field and H-Field levels were then assessed for compliance with occupational reference levels of Military Standard 464C, The Institute of Electrical and Electronics Engineers (IEEE) for Military Workplace standards and International Commission on Non-Ionising Radiation Protection (ICNIRP) guidelines. The occupational standard was exceeded on commander and gunner area at certain condition; nevertheless, the rest of the conditions complied within the occupational standard.

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Thermal and Nonthermal Effects of 5 G Radio‐Waves on Human’s Tissue

Jazyah

2024

The Scientific World Journal

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The deployment of 5 G wireless technology has generated considerable interest and debate regarding its potential effects on human health. This work provides a comprehensive overview of the current scientific understanding of the potential health implications associated with 5 G technology. Drawing upon a wide range of research studies, reviews, and expert opinions, we explore the implications through which 5 G signals interact with the human body. This work presents a balanced perspective, summarizing both the potential benefits of 5 G technology, such as improved data transfer speeds, reduced latency, and enhanced connectivity, as well as concerns that have been raised about its effects on human’s tissues. We discuss various aspects of health impacts, including thermal and nonthermal effects, focusing on the existing research on radiofrequency electromagnetic fields and their potential to cause adverse health outcomes. Simulation results show the negative effect of radio waves on human’s tissues.

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Thermal risks due to land vehicle radioelectric exposure: Results of Thales research and study for military purpose

Cited by 3 publications

References 5 publications

Numerical Evaluation of Human Body Near Field Exposure to a Vehicular Antenna for Military Applications

Numerical Evaluation of Human Body Near Field Exposure to a Vehicular Antenna for Military Applications

Near Field Radio Frequency Radiation Hazard on Military Armoured Vehicle - Approach to a Dose Assessment

Thermal and Nonthermal Effects of 5 G Radio‐Waves on Human’s Tissue

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