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Target Scattering Mechanism In Polarimetric Synthetic Aperture Radar

Clarence Mitchell

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Synthetic aperture radar (SAR) is a powerful remote sensing technique that can be used to image the Earth's surface. SAR systems transmit a series of pulses of electromagnetic energy and then record the echoes that are reflected back from the ground. The resulting data can be used to create images of the terrain, as well as to measure the physical properties of the surface, such as its roughness and moisture content.

Target Scattering Mechanism in Polarimetric Synthetic Aperture Radar: Interpretation and Application

by J. W. Smith

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Polarimetric SAR (PolSAR) is a type of SAR that uses multiple polarizations of electromagnetic energy to image the Earth's surface. This allows PolSAR systems to measure the scattering matrix of the target, which contains information about the target's shape, orientation, and material properties. PolSAR data can be used to identify different types of targets, such as buildings, trees, and vehicles, and to measure their physical properties.

The target scattering mechanism is the process by which electromagnetic energy is scattered from a target. The scattering mechanism depends on the target's shape, orientation, and material properties. The most common scattering mechanisms are:

Surface scattering occurs when the electromagnetic energy is scattered from the surface of the target. This type of scattering is most common for smooth surfaces, such as water or ice.
Volume scattering occurs when the electromagnetic energy is scattered from within the target. This type of scattering is most common for rough surfaces, such as vegetation or soil.
Double-bounce scattering occurs when the electromagnetic energy is scattered from two surfaces of the target. This type of scattering is most common for targets that have a smooth surface and a rough surface, such as buildings or vehicles.

The target scattering mechanism can be used to identify different types of targets and to measure their physical properties. For example, surface scattering can be used to identify water bodies, while volume scattering can be used to identify vegetation. Double-bounce scattering can be used to identify buildings and vehicles.

PolSAR data can be used to measure the target scattering mechanism and to extract information about the target's shape, orientation, and material properties. This information can be used for a variety of applications, such as:

Remote sensing: PolSAR data can be used to map the Earth's surface and to measure the physical properties of the surface, such as its roughness and moisture content.
Target classification: PolSAR data can be used to classify different types of targets, such as buildings, trees, and vehicles.
Environmental monitoring: PolSAR data can be used to monitor the environment and to detect changes in the environment, such as deforestation or pollution.

PolSAR is a powerful remote sensing technique that has a wide range of applications. The target scattering mechanism is a key factor in understanding PolSAR data and using it to extract information about the target.