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This work analyses the spectral structure of the sea clutter obtained from temporal sequences of radar images of the sea surface. The images were acquired by ordinary marine radars, which work in X-band and horizontal polarization. The study analyses the different contributions to the sea clutter spectrum due to those phenomena, such as ocean waves, speckle due to sea surface roughness, etc. that...
The main objective of the present study is to investigate the problem of coherent scattering from a half-space of discrete scatterers by importing a simple version of the renormalization formalism, which has been of great use in other fields such as solid state physics or particle physics. The problem of scattering from vegetation involves a great number of parameters including shape, size and spatial...
The basis functions that are most commonly used in the method of moments (MoM) for the simulation of rough surface scattering have a small support in terms of the wavelength. Complementary, the density of points per wavelength in the surface mesh has to be high enough to guarantee a good accuracy and this implies a computational effort which can often be excessive. Several factors contribute directly...
TerraSAR-X is a highly flexible X-band radar satellite. Its primary objective is the acquisition of high quality SAR images in a multitude of possible acquisition modes. The great amount of antenna patterns needed for image acquistion requires an antenna model accurately describing all beams. To guarantee the required image quality, the model has to be verified on-ground and validated in-orbit. The...
The Integral Equation Model (IEM) was developed originally by Fung and Pan (1986). The assumptions inherent to the model were amended in later publications but there were several important points that remained unclear and that propagated across all subsequent versions of the model. One of the authors of this paper proposed an improved IEM, called IEM2M (Alvarez-Perez, 2001), which removed these unnecessary...
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