Please don’t post in the group, post in the forum!
https://www.sarproz.com/groups/sarproz-group/forum/
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alfredo_rocca replied to the topic APS estimation in the forum Sarproz Forum 9 years ago
Hi Anarizka,
1) Here my personal suggestion about your first question. The best way to understand the goodness of your results (both preliminary and final) is based on the knowledge about the process you are investigating. You should address your specific case study (landslide? subsidence? localised structural issues?) being driven by a general…[Read more]
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stevexu started the topic Generic question about PS preliminary selection in the forum Sarproz Forum 9 years ago
I do got this quest for quite a long time, as we use the typical solution of selecting PS candidates by choosing
1.Amp Stab. 1-sig/mu, which is a modified version of amplitude dispersion index. What about other choices?
2.RCS, is that for the ratio of clutter and signal?
3.Temp-phase, is that for the phase dispersion index?
4.Amp Stab…[Read more]
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stevexu replied to the topic Audio output concerning error in the forum Sarproz Forum 9 years ago
I am running with your suggestion, it will take quite a while, hope it works.
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periz replied to the topic Audio output concerning error in the forum Sarproz Forum 9 years ago
DataSet Selection –> Advanced Parameters –> disable “Play Sounds”
let me know if this solves your issue -
anarizka started the topic PSInSAR Result Analysis in the forum Sarproz Forum 9 years ago
dear prof.Daniele
Could you give me suggestion and opinion from my PS results?
1. Why residual height results still rather high? In APS parameter I put -50 x 502. Why thermal expansion is not linear with building height ?
I have assumption, I dont know it’s true or not.
-Right side area is more density than left area, so in right area thermal…[Read more] -
stevexu started the topic Audio output concerning error in the forum Sarproz Forum 9 years ago
I do not know why, but soft is plagued by some audio output error, and following by some errors of simulating noise statistics. Why could be the underlying causes, how could I solve it?
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anarizka replied to the topic APS estimation in the forum Sarproz Forum 9 years ago
Dear Prof.Daniele
I would like to ask,
1. based on what we can conclude that SAR has good results and can use the APS options ( IP , IR , Tri.IR ) in the area of the case study ? Can you attach some paper / reference, in order to we can understand more each parameter. It is not enough to judge like your say that “the APS looks ok and the tes…[Read more] -
periz replied to the topic MST sparse point Multi-image processing in the forum Sarproz Forum 9 years ago
What do you mean that this is wrong? How can you say it’s wrong?
Don’t be afraid that a temporal noise in this case is not corresponding to a spatial noise.
In space you are applying several smoothing operations (interferogram filtering, unwrapping, APS estimation)
so, it is reasonable to expect a spatial correlation in the results
the problem is…[Read more] -
cnuhyl started the topic MST sparse point Multi-image processing in the forum Sarproz Forum 9 years ago
Hi,
when I processing a multi-master images graph,the result is that PS coherence are very low much of them below 0.3. I don’t know why, but this is wrong. Can you tell me the reason? Thank you ! some pictures in attachments. -
matusbakon replied to the topic Sentinel TOPS threads in the forum Sarproz Forum 9 years ago
Hi Yuxiao,
black borders has gone, thank you, however, footprints are now slightly different and they are not covering whole AOI. I’ll try to search for adjacent track based on Daniele’s suggestion from other forum thread and I’ll continue on testing.
Cheers
Matus
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periz replied to the topic Warning: Matrix is singular to working precision in the forum Sarproz Forum 9 years ago
There are no better or worse things. They are simply different and they apply to different analysis/objectives.
Using the Amplitude (Models!) is useful e.g. in the case of temporary targets. You don’t use it in multi-master approaches.The MST is by definition connected. However, even if theoretically interesting, the MST is practically not very…[Read more]
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cnuhyl replied to the topic Warning: Matrix is singular to working precision in the forum Sarproz Forum 9 years ago
Thank you very much.
when I processing a multi-master images graph ,what is the different about using coher or Amps as a weight? which is better?
Should the MST graph all connected? And how many connections better? -
periz replied to the topic Warning: Matrix is singular to working precision in the forum Sarproz Forum 9 years ago
I looks like the following:
– you are processing a multi-master images graph (it would be nice to see it)
– you are using the coherence as a weight in the inversion (is this the right choice? you need to look carefully at all your interferograms)
That message says that there are points for which some low spatial coherence values break the images…[Read more] -
cnuhyl started the topic Warning: Matrix is singular to working precision in the forum Sarproz Forum 9 years ago
Hi,
When I make the sparse points processing ,there has a warning:Matrix is singular to working precision.Does it is a error? And it whether or not has some influences on the result?
Thank you. -
periz replied to the topic Geocoding Display Error in the forum Sarproz Forum 9 years ago
Hi Ana,
data are ok and everything works.
Did you try to save the geocoding window?
In such case, I believe you have overwritten and messed up the pcodes.
You can download the last pcodes version and it should clean up the installation.
Otherwise delete all files (but keep the license!!) and re-install the pcodes from the original tar file. -
anarizka replied to the topic Geocoding Display Error in the forum Sarproz Forum 9 years ago
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periz replied to the topic Geocoding Display Error in the forum Sarproz Forum 9 years ago
do the following things:
a. save the small area (“save” button in “small area processing” window). give it a name you like.
b. go to “dataset selection” and click on “export site param”
c. send me by email or wetransfer or whatever you want the .mat file of the small area and the ExportPar.tgz file -
anarizka replied to the topic Geocoding Display Error in the forum Sarproz Forum 9 years ago
Dear Prof.Daniele
I have selected point first, after I select it and using Data Series, any tranding image will be appeared.
But, the fact, If I select point, the left-below box show me “Error in data selection”.
The image example from Def.Trend I have included before.Best Regards,
Ana
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periz replied to the topic Geocoding Display Error in the forum Sarproz Forum 9 years ago
select a PS point first
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anarizka replied to the topic Geocoding Display Error in the forum Sarproz Forum 9 years ago
Dear Prof.Daniele
I have included error file below,
Matlab R2013a was installedBest Regards
Ana
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