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Hi Ana,

from your geocoded refl map 11.jpg, I can tell you that it is not well geocoded. It looks shifted.
The Href is at the top of your 21.jpg. Currently, you see NaN inside the text box.
To know the value of the height, you need to sketch the SAR acquisition geometry, considering the incidence angle.
Do it, it’s a good exercise for…[Read more]

Dear Prof.Daniele

To have point match in GE, I have done first step to choose GCP that align in SAR image. you can see in 1.jpg (attach file). I think its SAR image and GE match well. After I choose small area processing, the shifting problem still unsolved (2.jpg file). As far as processing, I still can not find where is the Href box located.…[Read more]

yes it can
but since not many users tried it, it would be good if you would send us a feedback after trying
thx
dp

OK, thank you. I ve just discovered that the residue values in the CSV are also in mm, therefore they go up to plus minus lambda/4.

Ktemp (in the CSV) is in rad/deg or mm/deg? That could be the reason of problems.

1. to have the points match in GE, you need 2 things
– first of all, you must have (previously) chosen a GCP that aligns your SAR data to external geographic features (as a DEM or as points selected in GE)
– secondly, if you are processing a small area, the reference point should have been previously processed in the “site processing”, and its…[Read more]

hi ivana I cannot see it from what you have attached
you should send pictures with (taken from the small area module):
– multi image insar analysis window so that we see the options
– geocoding windows
– example of time series with problems
isn’t it that it’s in mm?

I am using star graph. What else can be wrong?

The time series as you can see was generated right now, from saved data, with nothing ticked.

i cannot see what u did from the screenshots…
if, as u say, nothing is ticked, u should get only residues…
next question: are u using the star graph or something else?

I do not understand. I computed it in the small area processing, as in the screenshot.

Nothing is ticked in the “data series” line. Do I understand well, that if I do not tick anything, I get only the residues (if I tick temp, the temperature effect is added etc.), and the same applies to the CSV export?

we’d need to know how u computed the time series…
if u estimated and included the thermal expansion, then it’s reasonable…

I am sending matlab-parsed histograms of residues for few dates (each date separately). Often, the higher residues correspond to high values of ktemp (I want to know if the possible correlation is real or is caused by unwrapping). Linear deformation trend was not estimated.

Computed approx. a month ago, in an older version (after Ktemp was added…[Read more]

can you send us some grab-screens?
in particular, about the time series you mention and about the options you used for processing
please include also the graph you used for the analysis

There is nothing called “SBAS” in my software
But you have many ways to process your data and in some ways do something similar to SBAS.
E.g. select an images graph (i.e. a set of interferograms) that best suites your case
– filter and unwrap interferograms
– apply an unwrapped (UW) time series estimation
You can either follow the classic steps of…[Read more]

I don’t understand how to process specifically,but I found Matlab gave me a message”center latitude and longitude from MASTER SLC data differ from center of calculated footprint”. Is this message important for this problem?

A possible explanation is a wrong timing of the image relative to the orbital data.
Suggestion: plot the footprints of the full-frame, extract the full-frame Master and plot it.
Based on the 2 pictures, you can make a rough estimation of the shift between the real geographic location of the image and the apparent one retrieved from the orbits.
You…[Read more]

I’m sorry for that the two pictures couldn’t be uploaded successfully.These two ones are new.