FAQ

TRE - Tele-Rilevamento Europa S.p.A.

What are SAR systems?

Why doesn't a radar image look like an optical image?

How do SAR systems work?

What do slant range and ground range mean?

What are the problems affecting SAR systems?

What do ascending and descending passes mean?

Why are SAR images called complex?

Which are the main SAR platforms?

What are SAR data used for?

What are interferometry techniques and interferograms?

What are the output products of interferometry?

Underwhich conditions can interferometry be applied?

What does baseline mean?

What are the limitations of interferometry?

What role can interferometry play in geophysical and geotechnical investigations?

What kind of geophysical deformations can be detected with interferometry?

What is Persistent Scatterer Interferometry (PSI)?

What is the PS technique?

What are PS?

What is the density at which PS are generally retrieved?

What is the difference between the PS Technique and differential InSAR techniques?

Are there limitations to the use of the PS Technique in areas of steep terrain and orientation to the satellite flight path?

What kind of SAR data can be used with the PS Technique?

Can data from different satellites be used together?

How precise are PS measurements?

Is the measurement precision related to the number of images used?

What is the spatial distribution of PS?

In what direction are ground movements measured by the PS Technique?

What are the limitations of the PS Technique?