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periz replied to the topic Exporting products in the forum Sarproz Forum 5 years, 1 month ago
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uros-djuric replied to the topic Exporting products in the forum Sarproz Forum 5 years, 2 months ago
I have one probably trivial question, when we export E-W cumulative displacement map in Multi-Sensor map, negative values stands for moving toward east or toward west? I suppose that positive values should be east and negative to the west, but just to clarify. Also, what are the conditions to use sparse export in same module? When I try to use it…[Read more]
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periz replied to the topic Exporting products in the forum Sarproz Forum 5 years, 2 months ago
Since a few months we developed a new module called “View/Export Extended Data/Results”.
Here the full description: https://sarproz.com/manual/plot_par_mod.html
Please update your software version if you have an old one.
We are still improving it, so, you could find minor bugs/changes.
The idea is that you can do what you want, using…[Read more] -
fakhrulfadzil replied to the topic Exporting products in the forum Sarproz Forum 5 years, 2 months ago
hello, i’m a bit confuse in viewing the interferograms. In visualization tools, i plot the interferograms by selecting coherence as mask and set the threshold to 0.5 to 0.8. Is this necessary or i should just use the default (mask=none; threshold=0)? Next, i tried to export the interferograms on GE using the extended data export. I change the…[Read more]
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uros-djuric replied to the topic Exporting products in the forum Sarproz Forum 5 years, 2 months ago
Thank you prof. Perissin, for clarification, now everything is clear to me.
The reason why I have date_1 in table is because I have loaded csv into QGIS and plotted it. Since in GIS same column name cannot exist twice, suffix _1 was added to second (fitted) value automatically by QGIS. In original .csv file everything is fine and without _1 at…[Read more] -
periz replied to the topic Exporting products in the forum Sarproz Forum 5 years, 2 months ago
Not sure why you get date_1, can you paste an example here?
You should get the explanation in the first line of the csv file. Something like: “28 data entries plus 28 estimated movement entries ” and ” from 20081025 to 20091217 “.
This says that in the first series of dates you get the actual data, in the second series you get the model chosen to…[Read more] -
uros-djuric replied to the topic Exporting products in the forum Sarproz Forum 5 years, 2 months ago
Hello prof. Perissin,
When I export processed data to CSV from time series module, (e.g. cumulative displacement), I can see that there are actually two dates and two values for the same point (latter is with _1 suffix). I suppose that those are components of cum. displacement, but can you please answer me which value stands for what (date &…[Read more]
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asteriospapas replied to the topic Scatter Plots filter/matrix visualization in the forum Sarproz Forum 5 years, 2 months ago
Thank you for the quick reply.
So from what I understand flagging the Phase operation when exporting the Def. Trend is not correct? Because it is in the real domain?Thank you in advance,
Asterios
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periz replied to the topic Scatter Plots filter/matrix visualization in the forum Sarproz Forum 5 years, 2 months ago
The “Filter/Matrix visualization” function in “Scatter Plots” displays scattered data in matrix a form. In Matlab this is much faster rather than displaying scattered points directly. It basically consists in re-sampling your scattered data on a regular grid. This operation corresponds to a spatial filter. And you can actually apply a filter…[Read more]
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asteriospapas started the topic Scatter Plots filter/matrix visualization in the forum Sarproz Forum 5 years, 2 months ago
Dear All,
In the Scatter Plots, Filter/matrix visualization there a box named Phase. Could i please have a better understanding of the filter applied on the output? Should it be applied?
Thank you in advance,
Asterios
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asteriospapas replied to the topic General Multi-temporal InSAR Procedure question in the forum Sarproz Forum 5 years, 2 months ago
Thank you Mr Perissin for the quick response.
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periz replied to the topic General Multi-temporal InSAR Procedure question in the forum Sarproz Forum 5 years, 2 months ago
Hi Asterios,
the general answer is: you would need to take a Sarproz course, where we teach exactly this, that is, how to judge and improve your results without any prior knowledge.
More in detail, always start with the easiest and default approach: linear trend, automatic and default choices. The software extracts and suggest you numbers,…[Read more] -
asteriospapas started the topic General Multi-temporal InSAR Procedure question in the forum Sarproz Forum 5 years, 2 months ago
Dear all ,
Since we have S1A and S1B over our heads every 6 days Interferometry has become an easy way to monitor the earth .
However, say you want to perform a Multi-temporal InSAR Procedure on an unknown area, just to check if something is happening, with no reference data to support you, or previous knowledge of the deformation pattern. How…[Read more]
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periz replied to the topic def-trend file glossary term in the forum Sarproz Forum 5 years, 2 months ago
CSV file fields:
ID – point reference id (sequential)
LAT, LON – latitude and longitude
SVET, LVET – sample and line, pixel SAR coordinates
HEIGHT – relative to sea level (m)
HEIGHT WRT DEM – relative to the external DEM (m)
SIGMA HEIGHT – height estimation standard deviation
VEL – deformation velocity in mm/year
SIGMA VEL – velocity standard de…[Read more] -
kazihifajat started the topic def-trend file glossary term in the forum Sarproz Forum 5 years, 2 months ago
hi,
using sentinel 1 i got time series as def-trend.csv file. in that file there were some terms like sigma vel, sigma height, height wrt dem, can i get any tutorial or glossary pdf, which elaborate what represent those terms. -
periz started the topic Sarproz Release 2019.1 in the forum Sarproz Forum 5 years, 2 months ago
Dear all,
we post here some news about recent updates.1. Wunderground has changed policies and it is not offering historical weather data as before anymore. We have implemented new functions to download data from darksky.net. Consider anyway that temporal and spatial coverage is not as before. Also the number of details can now be retrieved is…[Read more]
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periz started the topic Sarproz Release 2019.1 in the forum Sarproz Forum 5 years, 2 months ago
Dear all,
we post here some news about recent updates.1. Wunderground has changed policies and it is not offering historical weather data as before anymore. We have implemented new functions to download data from darksky.net. Consider anyway that temporal and spatial coverage is not as before. Also the number of details can now be retrieved is…[Read more]
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bridgetwang replied to the topic Unwrapping method in the forum Sarproz Forum 5 years, 3 months ago
Thank you for your rapid answer!
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periz replied to the topic Unwrapping method in the forum Sarproz Forum 5 years, 3 months ago
* standard: usual standard unwrapping method, pixel by pixel, it suffers the usual drawbacks of unwrapping in presence of noise. If you mask an interferogram and you have disconnected areas, it’s not going to connect them.
* sparse LS: it uses sparse points and Least Squares to connect unconnected areas and to solve the problem in presence of…[Read more] -
bridgetwang started the topic Unwrapping method in the forum Sarproz Forum 5 years, 3 months ago
Hi,
I’d like to ask one question about unwrapping method, as it seems there’s no detailed description in the manual.What the 3 kinds of unwrapping method “standard”,”standard LS” and “standard LS LP” mean?
And how could I choose from them? do they have different cases in which behaves best?
Best regards,
Zoe - Load More