Filippo Biondi

That's just limestone, I guess, that's sitting above the surrounding area.

It is.

That mountain is...

composed by solidificated sand okay got it got it it's not bedrock it's solidificated sand if it was bedrock i guess the whole thing wouldn't make any sense but right it would have to be sand so that makes sense thank you

Okay, so what we did, we moved to try and make some measurements.

So we shifted the technology there.

This is a satellite image, a synthetic visual radar image.

So Matt, we are now watching a radar image.

You are seeing how different is a radar image with respect to an optical image.

you can say how ugly it is yes but a rather image you you have to be we have to say this a rather image you can catch another image during the night during the day and also if it's cloudy and also if it rains so you have it always you have an ugly image yes but you have it always

But the contribution in terms of information that is printed inside a SAR image is order of magnitude higher with respect an optical image.

Why?

Because the radar image is

has been produced by coherent transmissions coherent it means that you have the information of the magnitude and also the information of the phase of the electromagnetic wave so

let's say that 98% of all the information is inside the face so the quantity of information that is encoded inside that image it is very high because you have the face okay

And the phase is a direct measurement of the distance belonging between the satellite and the ground.

The distance, you have a direct measurement.

Okay?

Okay.

Okay.