[seppi-santiago]

Hello Daniele,

I’m interested in getting this information too. I exported the Synthetic Amplitude via the Time Series Module and would like know whether its values are the normalized ones you mention to Ivana.

I enclose the created CSV file. As you see the values for the first date are always 0. Why? Is it the Synthetic Amplitude the correct parameter?

Thanks,
Santiago

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[seppi-santiago]

Hi Daniele,

Yes, you are right! I confused the terms. I know that what I’m seeing are amplitude values,

Thanks for the description and the info,
S

[seppi-santiago]

Hello Daniele,

I ask you again about the YYYYMMDD fields but this time in the .csv file created from the Small Area processing.

According to what I see it seems that they contain the single displacement for each date instead of the cumulative one (in the field corresponding to the master image eveything is 0, that’s why I think this is the case).

In which units are these magnitudes given?
And, again, which is the relation between them and the CUMDISP field?

I attach the csv file so that you see what I’m reading.

Thank you,
Santiago

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[seppi-santiago]

Yes, this question regards APS processing (and Sparse Points processing too), and yes, there is a particularly rapidly moving point (in comparison to the others), with which I didn’t mean that the rest or the points are stable, but moving slower instead. It is a landslide area where only few points (among them the Corner Reflectors) are identified as PS

thank you

Santiago

[seppi-santiago]

Ok, I’ve visualized it and it is wrong, all zero values. The command prompt tells me this:

” wrong saturation values!” Must be NaN < Min < Max < NaN”

I reselected the DEM, I manually re-wrote the GCP and projected again the DEM amplitude in SAR coordinates. Still seeing all zeros in SAR coordinates.

What should I do?

Thanks,
Santiago

[seppi-santiago]

Dan,

I’ve checked it with the DEM Visualization tool (screenshot attached), finding no NaNs, but according to the manual this displays the DEM in Geo coordinates, which file corresponds to the DEM in SAR coordinates?

Santiago

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[seppi-santiago]

I enclose my log file,

I remember that when you warned me about NaN values in my DEMI checked it and I converted them to zero.
When I made that correction I restarted the process again from the external DEM selection to make sure it was updated.

Santiago

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[seppi-santiago]

Lasterror.mat was not attached in the previous message,
S

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[seppi-santiago]

Hi dan,

Then it is desirable to ckeck it even if estimating displacement only (from what you say I interpret that it is used to remove the topographic phase reding it from my DEM, which in this case is a high-resolution one).

I have tried to re-process my dataset again with this option checked, and apart from taking too long (~8 hrs) I can’t see the results (display coherence, histogram, etc).

I enclose the logfile and the lasterror.mat file so that you can take a glance on them.

Thanks
Santiago

[seppi-santiago]

Ciao Dan,

Here the names of two of the images:

S1A_IW_SLC__1SDV_20160104T052642_20160104T052709_009340_00D80F_1E18
S1A_IW_SLC__1SDV_20151223T052642_20151223T052709_009165_00D311_E59E

I know this is not the propper place to ask this, but have you experienced recently problems to download Sentinel-1 data?

Thanks,
Santiago

[seppi-santiago]

Then, the cumulative displacement shouldn’t be equal to the displacement for the last acquisition?

I give you a concrete example:

20120803 (First Acquisition): 0.00
20120819: 0.43
.
.
.
20150112 (Last Acquisition): -14.53 —-> This is the displacement of 20151212 respect to 20120803??
CUMULDISP: -15.54

[seppi-santiago]

Hello Daniele,

I have a doubt regarding the fields YYYYMMDD (created with the time series option) which seem to be showing displacement values. These values refer to a cumulative displacement (i.e. the cumulative displacement at date 20010721) or to the single displacement registered for that acquisition (in that case, respec to to whom or when? the master, the initial date?) Which is the relation between these values and the field CUMULDISP?

Thanks,
Santiago

[seppi-santiago]

Hello Daniele,

I’ve tried to generate Cumulative Displacement files covering different periods of time, entering different dates in the Cumulative Displacement tool. However, when exporting to KML/KMZ I think I’m always getting the same file,as the initially generated for the complete temporal length. covered by mi images. Looking at the logfile it does not show any error when saving the CumDisp.mat file.

Another question related to this, when exporting time series the displacement values (corresponding to each acquisition date )stored in the .csv file are calculated using the same polynomial coefficients in the Cumulative displacement tool?

Thanks,
S

[seppi-santiago]

Hello Daniele,

Thanks you, now it is clear for me

Cheers,
S

[seppi-santiago]

Hello d,

Normally I’ve created the mask with the ‘Local Maxima from Reflexivity’ option. Could you explain how the other options work for te Mask creation?

-local maxima extraction with range lobes suppression
-local maxima extraction with range and azimuth lobes suppression
-regular grid, spaced dS by dL

thanks

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