-
Notifications
You must be signed in to change notification settings - Fork 255
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Is there a need for a reference point? If so, how to determine the reference point? #868
Comments
Hi, I'm also a student in Taiwan now, I have some opinions based on my little experience with InSAR. 1/ If you would like to investigate Chishang Fault only, why don't you crop the frame that cover Taitung instead of covering the whole Taiwan map. 2/ You can try to produce the result without a reference point. 3/ In case we need reference point, we select a point far from the epicenter, for example in Yilan, or Pingtung. The stable points can be found by using GPS measurements. |
Hi, |
1/ About the cropping your study area, please check this notebook: https://github.com/parosen/Geo-SInC/blob/main/EarthScope2024/1.4_Stripmap_Data_Processing_Interferometry/stripmapApp.ipynb, section 2/ For big area, I am not sure the underlying issue, maybe you can discuss with your advisor. 3/ To correct InSAR using GPS, we need to write our own script, because the methods to do so are varied. |
Thanks for your suggestions. I'll try them. |
Hi @david-ncu2019, |
Hi @ditafaith , Briefly saying, ALOS-PALSAR data has different acquisition modes (ScanSAR) and file structures, that's why ISCE provides For more information, please read https://github.com/isce-framework/isce2/blob/main/contrib/stack/README.md |
Please correct my understanding @david-ncu2019, thanks. |
|
Hello everyone,
I am new to using ISCE. I applied ISCE to process D-InSAR for coseismic deformation of the 2024 Neto earthquake and 2022 Chishang earthquake based on ALOS2 SCANSAR data. However, the unwrapped interferogram is strange. All the values are positive (left subplot). Is there a need for a reference point? If so, how to determine the reference point?
Thank you.
The text was updated successfully, but these errors were encountered: