Dear all,

I want to calculate B⊥, crit for Sentinel1A. As I know its formula is:

B⊥, crit = − (W ρ λ tan(θ − α))/c

c: The speed of light,

W: The bandwidth of the SAR signal,

ρ: The range to the object on ground,

λ: The wavelength of the SAR signal, (λ=0,055m)

θ: The incidence angle,

( Incidence angle range for interferometry mode (IW): 29.1° - 46.0°

incidence angle for IW2 is from 36.47 to 41.85.)

α: The local surface slope (as I am working on ice, it is zero)

My Question:

I know all parameters for Sentinel1A except W (The bandwidth of the SAR signal) and ρ (The range to the object on ground).

Is there anyone can guide me?

Cheers,

Marjan