Filippo Biondi

I worked on radar and synthetic battery radar for a lot of time.

Some work.

Yes, yes.

Which you can't really talk about.

No.

Right.

And I was...

And involved in some research where, together with the Italian Research Council of Bari, always south of Italy, we were testing some special processing that were able to perform something special.

And so this is...

Yes.

It is something, in my personal opinion, very simple.

The radar is installed on board on the satellite.

The satellite flies in this space at a distance of 600 kilometers at 7 kilometers per second in velocity.

So while it flies along the orbit, it is able to catch snapshots of the Earth.

The snapshots has to be focused.

and this focusing procedure let's say it in the azimuth i take it easy in the azimuth direction is done by sound by the processing of sound because it is involved at the so-called doppler frequency you know joe when you hear noises that are approaching to you the this noise will rise the frequency because it the the target has a velocity a positive velocity with respect to you

And so the frequencies rise up.

And this procedure allows us to estimate or to grab, let's say, the vibration information that is always present at the surface of the Earth in terms of evanescent waves that are present on the surface of the Earth.

So this vibration, which is mechanical vibration,

carries inside of this the information that is located underground.