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Thank you for your rapid answer!

* 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]

Hi,

it works after I delete the imgs in dataset.txt.

Thank you so much !

Best regards,
Zoe

Thank you very much !

With respect to question 3, the “previous points” you pointed to are points selected by e.g. Amplitude dispersion index in APS?

the GAR works with a graph previously processed by the APS. so “previous points” are the points that you import in GAR from the APS module

The points selected with star graph are PS points, and points selecte…

[Read more]

Hi Zoe,
theoretically, it should work. However, it’s not 100% tested, you might get some problems. If this happens, there is no need to redo all the job. You can just remove the images you want to discard from the dataset.txt file. Then it will work
best

Thank you for your kind reply.

With respect to question 3, the “previous points” you pointed to are points selected by e.g. Amplitude dispersion index in APS?

Also, I have the confusion that, since QPS make use of DS points, shall I comprehend like this: The points selected with star graph are PS points, and points selected by other kind of…[Read more]

1. Does GAR always behave better than MISP? And do you recommend to use GAR in most cases?

the standard way APS+MISP is widely used and very robust. when APS+MISP is successful, you don’t need anything else. However, there are cases where it fails. In those cases, GAR can help

2.You mentioned GAR could detect strong movements which exceeds…

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Dear Prof. Daniel,
After I read your answers, I tried some experiments with GAR to comprehend better in the past days. I got some more questions here during the experiments:

1. Does GAR always behave better than MISP? And do you recommend to use GAR in most cases?

2.You mentioned GAR could detect strong movements which exceeds wavelength, I…[Read more]

Hi,

There’s simple approach for LOS decomposition published here (see Appendix):
https://earth.esa.int/workshops/fringe09/proceedings/papers/s12_3esfa.pdf

The strategy is further described and applied for example here (Section 4. Results, end of page…[Read more]

Hi all,
I don’t know if there is a QGIS tool to compute the up-down and E/W component, let me know if someone knows.
Anyway, it is possible to follow this procedure: 1) starting from geocoded results, resample the measurement points (MPs) using the same grid for both ascending and descending; 2) for each cell, separately for asc and desc, c…[Read more]

At the moment you can project the velocities using the Multi-Sensor module
Here a bit of description https://sarproz.com/manual/multi_sens.html
In the next future we will implement also the projected time series export
Best

Hello Dear All,
I have the same question as mentioned by @adugna. IS there any way to analyze the Sentinel-1 data in the east-west direction in Sarproz. If there is, could you share documentation about that. Thanks

1. What the “Skip init Mask” means? When should it be checked?

it means selecting all pixels, not loading the initial mask
https://sarproz.com/manual/set_mask.html
https://sarproz.com/manual/carica_maschera.html

What the time series generated in this module is.

a time series object is a file that can be saved either in the APS module or in…[Read more]