INSAR / DINSAR - Perpendicular baseline calculation

s1tbx Interferometry
#41

Dear AriJeannin
have you figured out the problem/

#42

Dear Ambrun,

Unfortunately not solvedā€¦ Sorry.

#43

Thank you for sharing this . This was really helpful to me .

#44

Hey,

I checked the java code. They do it in this way:
Use a point on master, find the corresponding point on earth ellipse by solving doppler equation. Then find the corresponding point on slave. Now you have the point on master and the corresponding point on slave, you can calculate the Bper.
They use around 100 such points on master, so get 100 Bper. With this, they use polynomial fit to find the Bper for central point of the scene, which is the final result.

This is a bit complicated. I am also looking for easier way.

1 Like
#45

Hey, can we get baseline information from metadata now? Seems no?

#46

Hi domino1989,

Yes I found out the same thing, but I stopped trying to solve it as I donā€™t know how to get the ā€œcorresponding point on earth ellipseā€ā€¦

any help is still welcome, thanks for digginā€™it!

#47

By solving doppler equaiton. Well, I don`t know where you can find documents explaning this, maybe you can find some papers by yourself. And they use Newtonā€™s method to solve the equation.