Groups – Activity – wajira

eshagh started the topic Georeferenced result extration in the forum Sarproz Forum 6 years, 6 months ago

Dear SARPROZ friends!

SARPROZ nicely presents the phase, reflectivity and displacement maps on Google Earth after geocoding. I wonder how one can get the results (numbers) directly and not in graphical formats. For example, a txt or dat file with latitude, longitude and displacment. This could be much more helpful for further process and…[Read more]

periz replied to the topic Displacement along line of sight and satellite track azimuth in the forum Sarproz Forum 6 years, 6 months ago

the displacement you detect from InSAR is along the LOS.
To get displacement along track, you may use pixel tracking.
We do not have yet a proper specific module for pixel tracking, but you can still perform it.
Here an exercise showing how to apply pixel tracking (the third tutorial):
https://www.sarproz.com/yuxiaos-tutorials/
best

eshagh started the topic Displacement along line of sight and satellite track azimuth in the forum Sarproz Forum 6 years, 6 months ago

Dear friends

So far I could generate a displacement map from the Sentinel-1A SAR data with VV polarisation. However, what I need is the displacements along the LOS and Satellite along track. How can I extract such information from SARPROZ.

Is there any way to combine different InSAR data, for example, ascending and descending tracks to…[Read more]

Yuxiao replied to the topic Change Detection Menu – Reference to non-existent field 'DC' error in the forum Sarproz Forum 6 years, 6 months ago

Hello ogokce,

A new version of sarproz is available and please try to give it a test. The bug should be gone.

Regards,
yuxiao

Yuxiao replied to the topic Change Detection Menu – Reference to non-existent field 'DC' error in the forum Sarproz Forum 6 years, 6 months ago

Hello ogokce,

I believe what you are seeing there is a bug as we are working on some new updates in the change detection module. We will work on that and let you know when the bug is fixed. Meanwhile, I am glad to hear that you can still use the other way around to solve it.

I will keep you updated.

Yours,
yuxiao

ogokce replied to the topic Change Detection Menu – Reference to non-existent field 'DC' error in the forum Sarproz Forum 6 years, 6 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…

ogokce started the topic Change Detection Menu – Reference to non-existent field 'DC' error in the forum Sarproz Forum 6 years, 6 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, 6 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, 6 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]

periz replied to the topic coregistration fail in the forum Sarproz Forum 6 years, 7 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]

alegarsan7 started the topic coregistration fail in the forum Sarproz Forum 6 years, 7 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, 7 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

periz replied to the topic 2 S1A images coregistration problem in the forum Sarproz Forum 6 years, 7 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, 7 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, 7 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, 7 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]

periz replied to the topic APS estimation errors in the forum Sarproz Forum 6 years, 7 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, 7 months ago

Thank you!

jaroslav started the topic APS estimation errors in the forum Sarproz Forum 6 years, 7 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.

artemiziy replied to the topic How can I stop Google Earth auto-loading KML after Export? in the forum Sarproz Forum 6 years, 7 months ago

Hi Steffan,
Menu “MAIN” – “Select Dataset” – “Advavced params”. Uncheck “Auto GE call”.
Best regards,
Artem

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