- 标题
- 摘要
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- 实验方案
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[IEEE 2018 China International SAR Symposium (CISS) - Shanghai (2018.10.10-2018.10.12)] 2018 China International SAR Symposium (CISS) - On the Ship Wake Simulation for Multi-Frequncy and Mutli-Polarization SAR Imaging
摘要： In this paper, computer simulation of SAR (Synthetic Aperture Radar) image of surface-ship wakes is studied. Furthermore, the simulation results of the ship wake are compared at different frequencies and polarizations. The model adopted in the simulation accounts for not only the Kelvin wake produced in the water by the moving ship, but also the influence of the sea surface. The radar back-scatter coefficients of the wake is calculated using the Bragg mechanism. Based on the combination of hydrodynamic and radar scatter calculations, the simulation can provide the backscattering coefficients of the ship wake. Simulation results show that, in general, the back-scattering coefficient of ship wake has little dependence on the radar frequency, however, significantly on the polarization.
关键词： simulation,sea surface model,ship wake,SAR,Radar scattering model,Ship wake model
更新于2025-09-23 15:22:29
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[IEEE IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Valencia (2018.7.22-2018.7.27)] IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Relationship Between Bistatic Radar Scattering Cross Sections and GPS Reflectometry Delay-Doppler Maps Over Vegetated Land in Support of Soil Moisture Retrieval
摘要： This paper presents the application of a coherent bistatic radar scattering model from vegetated terrains and the extension of the model to circularly polarized incident wave cases for GNSS signals. It will then present an analysis relating the bistatic scattering Radar Cross Sections (RCS) of vegetated land cover to the customary Delay Doppler Maps (DDMs) resulting, e.g., from GNSS reflectometry (GNSS-R) observations. This step is key in being able to use GNSS-R data in soil moisture retrieval algorithms. While some analyses exist for this purpose for scattering from sea surface, such analysis has not been carried out specifically for vegetated land surface. The proposed model and methods are envisioned to be applied to the airborne GNSS Reflectometer Instrument for Bistatic SAR (GRIBSAR) project currently under development, as well as to the CYGNSS mission.
关键词： GRIBSAR,Coherent bistatic radar scattering model,GNSS-R,RCS,Delay Doppler Map
更新于2025-09-23 15:22:29