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Active 5 years, 1 month ago-
ogokce replied to the topic Change Detection Menu – Reference to non-existent field 'DC' error in the forum Sarproz Forum 6 years, 4 months ago
Update: As it was described in the tutorial, I used “load mask” and “visualization tools – Scatter Plots”. It solved my problem when I changed x axis to longitude, y axis to lattitude and press GeoOut. There might be a bug in change detection menu but this “visualization tools – Scatter Plots” tool saves the day. Thanks…
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ogokce started the topic Change Detection Menu – Reference to non-existent field 'DC' error in the forum Sarproz Forum 6 years, 4 months ago
Hello,
I tried to follow same procedure in Yuxiao’s Tutorials – QYTutorial1.pdf. Everything was OK until data export to Google Earth. At that point, after selecting “Orthorectify” in Mode, and pressing “Go” to export results to Google Earth, an error occurs: “Reference to non-existent field ‘DC'”
Log and last error is attached.
Best regards. -
periz replied to the topic ALOS-2 Data Import in the forum Sarproz Forum 6 years, 4 months ago
inside the SLC folder
you should have a directory for each image
each directory should contain all original files (img, led, trl …) -
rajabun started the topic ALOS-2 Data Import in the forum Sarproz Forum 6 years, 4 months ago
Hi Professor,
How to import ALOS-2 SCANSAR data ?
I have some PALSAR-2 level 1.1 data with 5 subswaths and HH Polarization in each data. I’m using SARProz in Ubuntu 16.04 LTS. When i want to get contents in SLC Data Processing, there are some errors so i can’t go through.
Here are the error that i found in terminal…[Read more]
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periz replied to the topic coregistration fail in the forum Sarproz Forum 6 years, 4 months ago
1. read the forum and search for similar questions. Here an example: https://www.sarproz.com/groups/sarproz-group/forum/topic/coregistration/
2. for Sentinel, you can use the orbital approach: https://www.sarproz.com/groups/sarproz-group/forum/topic/new-update-in-sentinel-tops-module/
However, your case may be challenging for the TOPS…[Read more]
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alegarsan7 started the topic coregistration fail in the forum Sarproz Forum 6 years, 4 months ago
Hi,Someone can help me?,
i’m a new user, and when I have tried to coregistrate two ERS images or 2 Sentinel1 images it gives me the following error:
WARNING!!! coregistration of image 20160708 failed!!!!image 20160708 will be discarded: check manually!!!
List of Images for which the coregistration failed:
20160708
No Temperature data found:…[Read more] -
Yuxiao replied to the topic 2 S1A images coregistration problem in the forum Sarproz Forum 6 years, 4 months ago
Meanwhile, we are working on switching to a more stable source for downloading S1 orbital files. I would expect to have the new source added to the software soon.
yuxiao
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periz replied to the topic 2 S1A images coregistration problem in the forum Sarproz Forum 6 years, 4 months ago
1) You are using an old version
2) You are missing required toolboxes.
please request an updated compiled version
best -
mohsen-ebrahimian started the topic 2 S1A images coregistration problem in the forum Sarproz Forum 6 years, 4 months ago
Hello,
I am trying to process 2 S1A images. In coregistration step, i faced with a problem.It is worth noting that the orbits are not downloaded and I downloaded them manually.
Log attached
Thanks -
periz replied to the topic Normalization in change detection? Yes or no? in the forum Sarproz Forum 6 years, 4 months ago
If you are talking about the normalization option that you can find here: https://sarproz.com/manual/change_detect.html (sorry, I noticed we did not include yet a module description in the manual -but you can find several tutorials on it…-) the idea is the following:
change = filter [ (A1 – A2)/(A1 + A2) ]
The normalization allows detecting any…[Read more] -
steffan started the topic Normalization in change detection? Yes or no? in the forum Sarproz Forum 6 years, 4 months ago
Normalization places the amplitude values of the product in well defined parameters, correct?
For Long term change analysis, does this in any way result in the loss of information? Does it facilitate comparison between images taken in different periods? What benefit is there leaving it off?
The tutorials available on the site all seem to have…[Read more]
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periz replied to the topic APS estimation errors in the forum Sarproz Forum 6 years, 4 months ago
Here you inputed a threshold on the connections length.
When you do so and you get isolated points, the way to fix it is using the graph analysis and refinement module.
We will implement a modification in the near future to remove isolated points at the time of the graph creation in the APS module, when a threshold on the connections length is inputed. -
steffan replied to the topic How can I stop Google Earth auto-loading KML after Export? in the forum Sarproz Forum 6 years, 4 months ago
Thank you!
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jaroslav started the topic APS estimation errors in the forum Sarproz Forum 6 years, 4 months ago
Hello everyone,
I have encountered a bunch of errors while estimating the APS.
The graph seems to be coherent enough, but some points are disconnected.
Is it mandatory in this case to refine my graph. Is there another may to resolve those errors?Thank you.
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artemiziy replied to the topic How can I stop Google Earth auto-loading KML after Export? in the forum Sarproz Forum 6 years, 4 months ago
Hi Steffan,
Menu “MAIN” – “Select Dataset” – “Advavced params”. Uncheck “Auto GE call”.
Best regards,
Artem -
steffan started the topic How can I stop Google Earth auto-loading KML after Export? in the forum Sarproz Forum 6 years, 4 months ago
Hello,
I am processing a very large volume of change detection (60+ S1 images), and exporting as KML for later viewing in GE. The problem is GE opens the output every time after processing, is there any way I can stop it?
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steffan replied to the topic Slight offset after orthorectification (S1) in the forum Sarproz Forum 6 years, 4 months ago
For anyone having the same problem, selecting an appropriate manual GCP seems to fix the problem. Roads and other landscape features are properly aligned now. I used a floodlight from a football field and it seems to do the job just fine.
The all zero error seems to be due to ocean, as the satellite data does cover some coastal area.
Thanks for the help.
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carolina replied to the topic small area – load area in the forum Sarproz Forum 6 years, 4 months ago
Thank you very much for help 🙂
I create in the DEM program according to the following steps:
1. Loading data – Select Dataset,
2. Coregistration – SLC Data Processing
3. Performing processes in the Site Processing window marked in red
4.Small Area Processing:
– Select Area
-InSAR Analysis: execution flattening, DEM removal, filtering…[Read more] -
periz replied to the topic Slight offset after orthorectification (S1) in the forum Sarproz Forum 6 years, 4 months ago
1. if DemSynt is not found it means you have to generate it via “external DEM and synthetic amplitude in SAR coordinates” (this could be the reason for wrong georeferencing)
2. if an SRTM tile is all zeros there are 2 possible explanations: (a) it’s on the sea (b) the sw tried to download it but there was a failure. If (b) then delete the all…[Read more] -
steffan replied to the topic Slight offset after orthorectification (S1) in the forum Sarproz Forum 6 years, 4 months ago
I am now getting an SRTM error:
sel_par: neither file D:SNAPBejaBeja_SARSLC2017RESULTSDemSynt nor D:SNAPBejaBeja_SARSLC2017RESULTSDemSynt.mat found
files D:SNAPBejaBeja_SARSLC2017RESULTSDemSynt and D:SNAPBejaBeja_SARSLC2017RESULTSDemSynt.mat not found
leggi_srtm: Warning! file D:SNAPBejaBeja_SARSLC2017..SRTMN05W033.hgt is all zeros!!…[Read more]
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