SARPROZ ©

It looks like somehow my previous answer to this post went lost…
In your recap you list 3 main steps.
The first 2 are common to all Time-Series approaches.
The third one corresponds to the classic Persistent Scatterers method.
If you want to apply other methods, you might need to process interferograms first.
Also, in some cases you do not use…[Read more]

Dear Dr periz
thank you for quick reply. In InSAR analysis of 2 coherent images (with 1 year interval), I realized that the maximum range of subsidence is 17 cm in bowl center (Just as a theory), so is it logical to put (0 , -170) or (170 , -170) for linear trend? Also I found there is gap between the results of sentinel-InSAR analysis in SARPROZ…[Read more]

the default value of linear deformation trend is -100 / 100 mm/year.
when you estimate the def trend in the APS processing, you estimate it between close points (the network connections). So, -100 / 100 is already a pretty big range.
in any case, if you have no previous knowledge, the histograms and all plots you get after the processing will help…[Read more]

Dear Prof.Daniele
I have a question about APS estimation. Actually I have no extra data or no idea about the amount of subsidence or deformation size. So in processing parameters, What strategy should be followed about numeric value of the range in linear trend? The default value (-1.1) seems to be wrong in my study area.
regards
Hamid

that’s just a matter of spatial sampling. use the scatter plots module, filter/matrix visualization function to decide how to re-sample plots. you find some examples in the tutorials
best

In the time series analysis, if we want to create continuous maps instead of PS points (like SBAS results in StaMPS) What steps should we take?

I don’t understand. Where is no such warning discribed in forum (I searched). And no lasterror.mat also because this is a warning not error

please read the forum rules

The only weather variable that is actually used in an operational and quantitative way is the temperature. Temperature is used if you decide to estimate the thermal expansion from your phase time series. If you do not estimate the thermal expansion, your results won’t be affected.

Please let me know how Exact Results Are Without Atmospheric Information?

Thank you for the detailed answer. I applied as follows;

– Preliminary Analysis (1.4.1.1 Reflectivity Map – 1.4.1.2 Mask Generation),
– Preliminary Geocoding (1.4.2.3 GCP Selection – 1.4.2.4 Ext. DEM in SAR Coordinates),
– Multi-Image InSAR Processing (1.4.8.1 APS estimation – 1.4.8.3 Sparse Points Processing)

and after these steps, I used load…[Read more]

thank you very much
Your speech is completely correct, but I have already communicated and they also said that you must process it separately.
Now, my question is, how can I combine them together when I get both kml files?
best regards.
Arash

from your log:
selected reference S: 6154 L: 2181, Temp Coher: 0.98, Sp Coher:
The software cannot tell you the value of the spatial coherence (the coherence map https://sarproz.com/manual/save_coher_map.html) because it is missing.
this is not going to cause any problems.
if you want to see that number or if u want to see the Coherence Map,…[Read more]

phase2height and phase2flat constants are automatically generated when needed.
if you check the log, you will find it written.

1.4.2.5 is coregistration refinement and you should NOT run it in normal conditions https://sarproz.com/manual/coreg_refine.html

APS estimation (1.4.8.1) + Sparse Points processing (1.4.8.3) is the standard approach.…[Read more]

We have already answered you by email.
You have to process the two subswaths separately. And the tutorials are online.
For additional help, please contact the Sarproz people in your area.

Hi,

I want to apply PSInSAR with these steps. But I have some questions.

phase2height and phase2flat constants generation (1.4.3.2 and 1.4.3.3) are not generated manually according to the following link. In which step it is done by automatically?
https://www.sarproz.com/groups/sarproz-group/forum/topic/sarpros-release-2017-2/

This entry…[Read more]