Radar cross section reduction of cylindrical cavities using ray-tracing method

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2022-5-16

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Sezgin, Yusuf

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Low observability technology, which aims to make it difficult to be detected, tracked, and hit by the enemy forces is one of the most critical technologies for 5th generation fighter aircraft. Low observability in Radio Frequency (RF) band is achieved by minimizing the Radar Cross Section (RCS) of the aircraft at specific angular zones and frequencies. RCS is a quantity related to the amount of reflection of the incoming electromagnetic wave by the aircraft and it is generated by different scattering mechanisms. Scatterings due to specular reflections and diffraction can be directly controlled by angular alignment, geometric shaping, and radar absorbing material (RAM) applications. However, multiple reflection scatterings in the cavities cannot be directly controlled due to their chaotic nature. In this study, a basic Shooting and Bouncing Rays (SBR) tool is developed to calculate the RCS and it is aimed to reduce the RCS of cylindrical cavities by optimizing the cavity geometry and RAM performance with the help of the statistical outputs of the ray-tracing method.

Subject Keywords

Ray-tracing, Shooting and Bouncing Rays (SBR), Radar Cross Section (RCS), Low Observability Technology, Cavity, Radar Absorbing Material (RAM)

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https://hdl.handle.net/11511/97378

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

Y. Sezgin, “Radar cross section reduction of cylindrical cavities using ray-tracing method,” M.S. - Master of Science, Middle East Technical University, 2022.