Good morning,
For my earthquake study, I need to use jointly InSAR, levelling and GNSS. For this, I would like to correct the error in INSAR results by using GNSS data. In Hammond et al. 2010, I read that I should solve for a constant linear 2D ramp, so place the LOS rate map into the GNSS reference frame.
I am not sure of the procedure if someone could help.
Can I select a GNSS station value in the far field of InSAR and remove this value from the full interferogram ?
Regards.
can you please provide the full reference to this publication?
What do you mean by “far-field”?
By ‘far field’ I mean where there is almost no deformation on the interferogram
I don’t know if that is the correct approach. The atmospheric errors are smallest close to the area of interest. I suggest wider reading of the literature:
https://scholar.google.nl/scholar?cites=3931196443787800770&as_sdt=2005&sciodt=0,5&hl=en
For atmospheric correction I will use GACOS (http://ceg-research.ncl.ac.uk/v2/gacos/), what I want to do now is to get some consistency between the interferogram and the GNSS.
I will have a look at your link, thanks