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Simulating the propagation of light and radio waves is crucial across various research and industry sectors. Both visible light and radio waves exhibit wave-like properties, such as wavelength and frequency, while also behaving like particles, specifically photons. This work focuses on geometrical optics methods for simulating these wave propagations, introducing two novel algorithms for propagation simulation that adapt recent global illumination techniques from Computer Graphics. By enhancing these efficient algorithms, we create a fast, flexible utility for wireless network simulation. The simulation leverages the particle nature of electromagnetic radiation, allowing for discrete sampling of the volumetric electromagnetic field through ray or beam tracing, resulting in a Photon Path Map for estimating field density at various spatial points. This approach is applicable to both indoor and outdoor three-dimensional scenarios, with beam tracing optimizing outdoor simulations by simplifying them to a 2D context. We also address the adaptation of simulation parameters to real measurements, emphasizing the importance of accurate model parameters. Additionally, we implement antenna patterns in a ray-tracing framework using spherical harmonic basis functions. The work further explores efficient illumination updates for simulating diffuse, globally illuminated, animated scenes, critical for applications in gaming, movies, scientifi
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Ray tracing for light and radio wave simulations, Arne Schmitz
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- Erscheinungsdatum
- 2012
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