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periz replied to the topic PSInSAR Result Analysis in the forum Sarproz Forum 6 years, 3 months ago
overfit is caused by trying to fit too many parameters in few data. the range of v and h does not cause overfit. range of v and h should be chosen depending on the analyzed area
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periz replied to the topic estimated height output in the forum Sarproz Forum 6 years, 3 months ago
1. please read the forum rules https://www.sarproz.com/groups/sarproz-group/forum/topic/forum-general-rules/
if you encounter errors u MUST include lasterror and log files to get answers2. ur data is sparse. exporting a raster of sparse data is not a good idea. use the filter/matrix visualization in scatter plots and export it from there
best
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periz started the topic Sarproz Updates Server in the forum Sarproz Forum 6 years, 3 months ago
IMPORTANT!!
In the past days we went through an extraordinary maintenance of the online updates server. The server references changed and for this reason you need a new software version to be able to access it. Hereafter we post the new versions that you can use to re-connect to the updates server. The links will be active for 7 days (till Aug…[Read more]
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periz replied to the topic full graph coherence generation in the forum Sarproz Forum 6 years, 3 months ago
The log says that file M:ICELANDRESULTSMATLABInSarParam.mat is corrupted.
Unless this is a system/matlab problem (in which case the solution is surely more complex), simply delete the file and try again.
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periz replied to the topic DEM outside SRTM in the forum Sarproz Forum 6 years, 3 months ago
You can add your own DEM from the coregistration parameters
https://sarproz.com/manual/coreg_param.html
top right button
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periz replied to the topic Mask for Sparse points selection in the forum Sarproz Forum 6 years, 3 months ago
regenerate the mask file
the file is corrupted -
periz replied to the topic Mask for Sparse points selection in the forum Sarproz Forum 6 years, 3 months ago
Try please to see if this solves your issue: https://we.tl/mDZabGeY6b
Let me know
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periz replied to the topic DEM outside SRTM in the forum Sarproz Forum 6 years, 3 months ago
at the moment no other automatic DEM download is implemented. only SRTM.
you can anyway import your own geotiff DEM in geographic coordinates
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periz replied to the topic different color in resampled version of KML scattered in the forum Sarproz Forum 6 years, 3 months ago
when you zoom to the maximum resolution as you say you see dots and then a homogeneous blue. It means you have downsampled/filtered your data to the point that you don’t see the original points anymore. When this happens, inevitably you are comparing two different things: original data and filtered/downsampled one. If the colors don’t match the…[Read more]
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periz replied to the topic different color in resampled version of KML scattered in the forum Sarproz Forum 6 years, 3 months ago
can you post both colorbars?
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periz replied to the topic different color in resampled version of KML scattered in the forum Sarproz Forum 6 years, 4 months ago
Hi Mahtab,
colors are the same, but you cannot compare a continuous image with black-circled dots. The effect is obviously slightly different. Moreover, the two results are differently downsampled by googleearth. you have to look at them locally at the maximum resolution. there you will see that colors are the same
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periz replied to the topic spars point selection in the forum Sarproz Forum 6 years, 4 months ago
if you select all pixels in an area, all those pixels will be treated and exported.
you do not want all pixels in that area
you want all pixels with some additional thresholds, like temporal coherence higher than a value or whatever.
to apply multiple thresholds, use the “save selection” function in “scatter…[Read more] -
periz replied to the topic orthorectifcation of points export? in the forum Sarproz Forum 6 years, 4 months ago
this is an other good reading: https://engineering.purdue.edu/~perissin/CE697_insar/MTINSAR.pdf
avoiding estimating the DEM error can cause a wrong movement estimation (because the topographic phase acts as noise on the phase values).
but you are right, Sentinel has short normal baselines, and if your DEM is good, you can assume most of the…[Read more] -
periz replied to the topic orthorectifcation of points export? in the forum Sarproz Forum 6 years, 4 months ago
The short answer is: you need to take a course on the subject.
The longer answer: read this https://engineering.purdue.edu/~perissin/CE597_radar_remote_sensing/10336.pdf
and also all material you find on this website, including the papers here: https://www.sarproz.com/scientific-publications/
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periz replied to the topic Sentinel-1 interferograms processing problem in the forum Sarproz Forum 6 years, 4 months ago
1. please read the forum rules about what to include in your post
2. as the message says, ur RAM is too low
3 possible workaround: do not generate jpeg files (to do this check the related option in the advanced parameters) -
periz replied to the topic DEM ERROR in the forum Sarproz Forum 6 years, 4 months ago
no
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periz replied to the topic Sarproz Release 2016.00 in the forum Sarproz Forum 6 years, 4 months ago
It’s a network problem. Try again later. Or check if your network is behind a firewall or a proxy. You can also try to use a different connection (like from home or through a mobile device)
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periz replied to the topic Issue related to MCR component cache, in the forum Sarproz Forum 6 years, 4 months ago
The cache of the MCR component can be found in a folder similar to the following one
C:Users\AppDataLocalTemp\mcrCache8.3main_…
delete the folder and then try again, it should work.
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periz replied to the topic Spatial ramp for the distribution of PS points in the forum Sarproz Forum 6 years, 4 months ago
Spatial ramps can arise from the spatial graph integration. Such operation is weighted with the coherence of the connections. Check the coherence and check the Non-linear parameters used to set the range of reliable coherence values. Choosing carefully those parameter should help the stabilization of the integration. If that does not help, it…[Read more]
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periz replied to the topic Inconsistency of results from different processing steps in the forum Sarproz Forum 6 years, 4 months ago
Hi Paul,
there is a high number of factors that can cause the difference in the results. One of them is the reference point. Then one should check all options you used for processing. Also the outcome of the APS processing plays an important role on the final result. The topic is too broad to be treated here in a single answer. I suggest you to…[Read more] - Load More