Radar radome and its design considerations

Wahab, Mashury

doi:10.1109/icici-bme.2009.5417229

Cited by 13 publications

(7 citation statements)

References 1 publication

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“…The attenuations are to be considered when the radome thickness th (i.e., in the specialized literature, the radome thickens is abbreviated by the t symbol; however, to not be confused with time notation, this study will use th instead) is on the same scale with the communication wavelength λ. However, when th is much smaller than λ , the induced losses are sub-unitary [ 54 , 55 , 56 ]. In this study, the plastic lid thickness is 1 mm, while th represents the 2 cm distance of the Rx antenna to the lid; therefore, for the testing λ of 0.345 and 0.124 m, the lid-induced losses can be neglected since the weather during experiments was dry (i.e., without inducing water accumulations on the lid area).…”

Section: Methodsmentioning

confidence: 99%

Buried RF Sensors for Smart Road Infrastructure: Empirical Communication Range Testing, Propagation by Line of Sight, Diffraction and Reflection Model and Technology Comparison for 868 MHz–2.4 GHz

Marsic

Faramehr

Fleming

et al. 2023

Sensors

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Updating the road infrastructure requires the potential mass adoption of the road studs currently used in car detection, speed monitoring, and path marking. Road studs commonly include RF transceivers connecting the buried sensors to an offsite base station for centralized data management. Since traffic monitoring experiments through buried sensors are resource expensive and difficult, the literature detailing it is insufficient and inaccessible due to various strategic reasons. Moreover, as the main RF frequencies adopted for stud communication are either 868/915 MHz or 2.4 GHz, the radio coverage differs, and it is not readily predictable due to the low-power communication in the near proximity of the ground. This work delivers a reference study on low-power RF communication ranging for the two above frequencies up to 60 m. The experimental setup employs successive measurements and repositioning of a base station at three different heights of 0.5, 1 and 1.5 m, and is accompanied by an extensive theoretical analysis of propagation, including line of sight, diffraction, and wall reflection. Enhancing the tutorial value of this work, a correlation analysis using Pearson’s coefficient and root mean square error is performed between the field test and simulation results.

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Section: Methodsmentioning

confidence: 99%

Buried RF Sensors for Smart Road Infrastructure: Empirical Communication Range Testing, Propagation by Line of Sight, Diffraction and Reflection Model and Technology Comparison for 868 MHz–2.4 GHz

Marsic

Faramehr

Fleming

et al. 2023

Sensors

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“…A radome, coined from the two words radar and dome, is a weatherproof enclosure constructed of structural plastic to protect the surface of an antenna, such as a microwave or radar antenna, from external environmental disturbances like wind, rain, ice, sand, and ultraviolet rays, and also to conceal the electronic equipment of the antenna from the public [145,146]. The radome can attenuate the receiving and transmitting signals, especially when wet; hence, it should be constructed using low-permittivity materials, shaped to achieve good transparency for the desired frequency, and hydrophobic-coated to avoid additional attenuation due to the wet radome surface [147,148].…”

Section: Propagation Through Radomementioning

confidence: 99%

A Review on Rain Signal Attenuation Modeling, Analysis and Validation Techniques: Advances, Challenges and Future Direction

et al. 2022

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Radio waves are attenuated by atmospheric phenomena such as snow, rain, dust, clouds, and ice, which absorb radio signals. Signal attenuation becomes more severe at extremely high frequencies, usually above 10 GHz. In typical equatorial and tropical locations, rain attenuation is more prevalent. Some established research works have attempted to provide state-of-the-art reviews on modeling and analysis of rain attenuation in the context of extremely high frequencies. However, the existing review works conducted over three decades (1990 to 2022), have not adequately provided comprehensive taxonomies for each method of rain attenuation modeling to expose the trends and possible future research directions. Also, taxonomies of the methods of model validation and regional developmental efforts on rain attenuation modeling have not been explicitly highlighted in the literature. To address these gaps, this paper conducted an extensive literature survey on rain attenuation modeling, methods of analyses, and model validation techniques, leveraging the ITU-R regional categorizations. Specifically, taxonomies in different rain attenuation modeling and analysis areas are extensively discussed. Key findings from the detailed survey have shown that many open research questions, challenges, and applications could open up new research frontiers, leading to novel findings in rain attenuation. Finally, this study is expected to be reference material for the design and analysis of rain attenuation.

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“…These weatherproof enclosures protect the array from the outside environment (e.g. wind, rain, ice, sand, ultraviolet rays), enhance aerodynamics, and provide visual security [23]. An ideal radome is essentially transparent to antenna's operational frequencies, however with UWB arrays and the mechanical needs of an aircraft skin this proves to be difficult to tune over a wide bandwidth.…”

Section: Finite‐array Effectsmentioning

confidence: 99%