Generation of backscattering Time-series by ocean surface using Multi-level Fast IPO

초록

Electromagnetic scattering computation from the sea surface is pivotal for maritime surveillance and navigational safety. This study employs the high-frequency approximation method known as Iterative Physical Optics (IPO), is utilized to predict the scattering attributes of the sea surface, especially those with substantial electrical sizes and textured complexities. The fast IPO methodology introduced here significantly streamlines computational efforts in expansive environments by implementing the Fast far-field approximation, thus elevating the efficiency of the analysis. Modeling of the sea surface was adeptly performed using the Fung & Lee spectrum, with the dynamic normalized Radar Cross Section of the sea surface being thoroughly analyzed. Additionally, this paper improves the IPO preprocessing by incorporating GPU acceleration techniques with Nvidia's OptiX, and such enhancements are anticipated to contribute to the performance improvement of maritime surveillance and defense systems.