How VV, VH, HH, HV polarized wave interacts with smooth, rough, vertical heighten objects and flat surfaces ? Why we prefer HV for AGB of Forest cover. One reason is volume / depolarization. Please explain the other reasons as well.
There are many factors and interactions. The ability of microwave to penetrate clouds, precipitation, or land surface cover depends on its frequency e.g. penetration power increases for longer wavelength (lower frequency).The interaction between microwaves and the surface also depends on the incident angle of the radar pulse on the surface e.g. a large incident angle will increase the contrast between the forested and clearcut areas.
You can Google: SINGLE vs MULTI-POLARISATION INTERFEROMETRY for more details :-)
I am only want to clear this concept.
VV. VH, HH and HV interacts with a single tree one by one that is heighten from surface then what will be response ?
type of object shows different echo from each pair(vv,vh,...).
for instance echo from a metal has different for each pair