A Simple Model for Assessing Millimeter-Wave Attenuation in Brownout Conditions
Flying helicopters in adverse environmental conditions, such as low heights in arid regions, can be dangerous, especially during landing and take-off, since during hovering, the rotors produce a dust cloud of particles. This phenomenon is known as the “brownout” condition. Unlike visible and infrare...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/22/8889 |
| _version_ | 1827643647844155392 |
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| author | Arkadi Zilberman Natan Kopeika |
| author_facet | Arkadi Zilberman Natan Kopeika |
| author_sort | Arkadi Zilberman |
| collection | DOAJ |
| description | Flying helicopters in adverse environmental conditions, such as low heights in arid regions, can be dangerous, especially during landing and take-off, since during hovering, the rotors produce a dust cloud of particles. This phenomenon is known as the “brownout” condition. Unlike visible and infrared systems, the radar devices in the microwave or millimeter wave region offer the capability of sufficient transmission through atmospheric obscurants, such as fog, smoke, sand/dust storms, and brownout. In this work, we present a theoretical evaluation of mm-wave (85–100 GHz) attenuation/scattering and power transfer in brownout conditions. The model includes attenuation/scattering prediction and radiant flux, or power collected by the receiver. We are considering the case of sand grain clouds created by helicopter rotor airflow during landing in arid areas. The evaluated scenarios are brownout environments over ranges up to 50 m. The predicted values from the mathematical model are compared with findings in the field and the literature. A simple model for mm-wave power transfer estimation shows satisfactory agreement with the measured values. |
| first_indexed | 2024-03-09T18:00:03Z |
| format | Article |
| id | doaj.art-6a44e0b7a9d84bb3abeba24c33a538b5 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T18:00:03Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-6a44e0b7a9d84bb3abeba24c33a538b52023-11-24T09:57:23ZengMDPI AGSensors1424-82202022-11-012222888910.3390/s22228889A Simple Model for Assessing Millimeter-Wave Attenuation in Brownout ConditionsArkadi Zilberman0Natan Kopeika1School of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, IsraelSchool of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, IsraelFlying helicopters in adverse environmental conditions, such as low heights in arid regions, can be dangerous, especially during landing and take-off, since during hovering, the rotors produce a dust cloud of particles. This phenomenon is known as the “brownout” condition. Unlike visible and infrared systems, the radar devices in the microwave or millimeter wave region offer the capability of sufficient transmission through atmospheric obscurants, such as fog, smoke, sand/dust storms, and brownout. In this work, we present a theoretical evaluation of mm-wave (85–100 GHz) attenuation/scattering and power transfer in brownout conditions. The model includes attenuation/scattering prediction and radiant flux, or power collected by the receiver. We are considering the case of sand grain clouds created by helicopter rotor airflow during landing in arid areas. The evaluated scenarios are brownout environments over ranges up to 50 m. The predicted values from the mathematical model are compared with findings in the field and the literature. A simple model for mm-wave power transfer estimation shows satisfactory agreement with the measured values.https://www.mdpi.com/1424-8220/22/22/8889mm-wave attenuationscatteringpower transfersandstormbrownout |
| spellingShingle | Arkadi Zilberman Natan Kopeika A Simple Model for Assessing Millimeter-Wave Attenuation in Brownout Conditions Sensors mm-wave attenuation scattering power transfer sandstorm brownout |
| title | A Simple Model for Assessing Millimeter-Wave Attenuation in Brownout Conditions |
| title_full | A Simple Model for Assessing Millimeter-Wave Attenuation in Brownout Conditions |
| title_fullStr | A Simple Model for Assessing Millimeter-Wave Attenuation in Brownout Conditions |
| title_full_unstemmed | A Simple Model for Assessing Millimeter-Wave Attenuation in Brownout Conditions |
| title_short | A Simple Model for Assessing Millimeter-Wave Attenuation in Brownout Conditions |
| title_sort | simple model for assessing millimeter wave attenuation in brownout conditions |
| topic | mm-wave attenuation scattering power transfer sandstorm brownout |
| url | https://www.mdpi.com/1424-8220/22/22/8889 |
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