ESA Biomass satellite will be launched in few days, uses P-band SAR data.
P-band SAR data helps monitor trees by using its long wavelengths to penetrate dense forest canopies and gather information about the ground surface, tree structure, and biomass. This data can be used to estimate forest above-ground biomass (AGB), detect deforestation, and assess land degradation. P-band SAR also has the advantage of high capability for resolving high-gradient displacements and strong snow penetration.
Here’s a more detailed explanation:
Penetration:
P-band SAR has a long wavelength (67-139 cm), which allows it to penetrate through dense forest canopies, providing insights into the forest floor and underlying structures.
Biomass Estimation:
P-band SAR can be used to estimate forest AGB by analyzing the backscattered signal, which is influenced by factors like tree architecture, moisture content, and the arrangement of trees.
Deformation and Land Degradation:
P-band SAR can detect ground deformation, which can be indicative of land degradation or changes in forest structure.
Vertical Structure:
P-band SAR tomography allows for the reconstruction of the vertical structure of forests, revealing how the backscattered signal varies with height.
Advantages:
P-band SAR has the advantage of being able to resolve high-gradient displacements, penetrate snow, and is less sensitive to subtle deformation, making it a valuable tool for forest monitoring.
