Abstract
A wave propagator, used to simulate Global Navigation Satellite Systems (GNSS) reflected signals from ocean surfaces, is presented and results are discussed. The wave propagator simulates the characteristics of a bi-static scattering system. The wave propagation is performed using a full-wave solution to a parabolic equation approximating the electromagnetic wave equation. The parabolic equation in the simulator is solved using the split-step sine transformation. The Earth’s surface is modeled with the use of an impedance model. The impedance concept gives an accurate lower boundary condition in the determination of the electromagnetic field, thus making it possible to simulate reflections and the effects of transitions between different media. Simulated GPS ocean surface reflections for different ocean characteristics will be presented and analyzed.The analysis of the simulated surface reflection signals will in general reveal spectral structures ofthe reflected signals that lead to the extraction of sea surface roughness, and surface wind speed.
| Original language | English |
|---|---|
| Journal | Science Bulletin |
| Number of pages | 15 |
| ISSN | 0036-8261 |
| Publication status | Submitted - 2023 |
Keywords
- Wave propagation
- Reflections
- Reflectometry
- Sea surface
- Sea surface electromagnetic scattering
- Fourier transforms
- Geophysical signal processing