Metrics Sentinel 1

Microwave Toolbox
1

Hello!

I want to perform different metrics on Sentinel 1 data like the ones in the following paper:

image
image1090Γ—930 95.4 KB

For example:

  1. Difference between 𝑉𝑉 (annual) βˆ’ 𝑉𝐻 (annual); 𝑉𝑉 (summer) βˆ’ VV (winter);

  2. Division between 𝑉𝐻 (annual) / 𝑉𝑉 (annual)

  3. Standard deviation of 𝑉𝐻 (annual), VH (summer) and VH (winter);

I don’t understand what units I should work in. If I use dB, can I calculate the standard deviation? What does VH/VV (dB) represent?

On the other hand, if I work in lineal scale, is it okay to calculate the standard deviation in non-parametric data?

I know that considering the rules of logarithms, VH(dB) - VV(dB) = 10*log10(VHsigma0/VVsigma0).

The objective of my work is to relate radar metrics with environmental variables by means of Generalized Linear Models (GLM).

I would apreciate any comments or suggestion.

Thanks!

2

I can’t see any dimension in the table you provided.
Could you send the name of the paper?

3

Hi!
this is de paper:
β€œRadar vision in the mapping of forest biodiversity from space”

https://www.nature.com/articles/s41467-019-12737-x