SARPROZ ©

probably you used wrong weights.
which APS options are you using?
Can you grab the APS module screen and show them to us?
Also, how many images are you processing, from which sensor, which images graph?

hi Ivana,

thanks for your message, indeed, I found a bug, introduced by an update, in a non-tested configuration.
I am going to upload soon the bug fix.
The error occurred while managing the index of images to add.
You noticed that in your case the sw processed again all images (which should not happen).
As a consequence, all images were added…[Read more]

Dear Prof.Daniele

I have tried using another parameter for “Images Graph=Delaunay Graph”.
In APS processing I used DSxDL is 0x0 and matr.Coher.Win is 10×10 also used I.P. (Inverted Parameters) options. Hope you give me suggestion for results.

Any other question
After I made scatter plot, I was rather confused about analysis relation of amplitude…[Read more]

Hi Ana.
the selection of points looks not good. so, the graph has few good connections and the result is quite bad.
if you are analyzing a 3×3 sqkm area and you have a GPS station at 8km distance you cannot do much.
dp

Hi Ana.
the selection of points looks not good. so, the graph has few good connections and the result is quite bad.
if you are analyzing a 3×3 sqkm area and you have a GPS station at 8km distance you cannot do much.
dp

Sarproz has many ways to export results.
The two most common ones can be found in the “results exporting” frame in site processing: “extended geocoding” and “sparse geocoding”.
In the first case, you can choose between kml and geotiff formats. In the second case, the options are: csv and kml.
If you want to export sparse results (as those…[Read more]

Dear Prof.Daniele

Another question.
I try to compare with GPS statiun (LIKNstatiun that I plotted in GE). This statiun have distance around 8km from my area. I think its shape almost same. So, Have I considered it or no?

Best Regards,

Ana

Hi, Pro. Daniele,

(1) I’d like to know something about APS estimation.I used 32 scenes TerraSAR-X and Tandem-X images in all.The zip file contains the parameters of APS estimation and the results.I found the connection coherence is good,but the result of APS including “PS coherence after graph inversion and APS removal” are bad and the image…[Read more]

1 and 3. When you work with Persistent Scatterers (without using weights, that is, without filtering) Sarproz does not need to generate and write interferograms. Interferograms may be processed if you want to see them or if you want to use filtered phase. If you choose to process your data with a QPS-like approach (that is, using the coherence as…[Read more]

Dear Prof.Daniele

I have processed almost 3 square-kilometer area.
Hope you give me suggestion to increase good results.
How about my second question (GPS data). Could you explain it?

Please, Find attach file below.

Best Regards,

Ana

Hi Ana,

your result is not looking very good. How big is the area you are analyzing? can you plot the PSC graph with coherence-colored connections? Can you show us the reflectivity map and the coherence map?
dp

Hi Ana,

your result is not looking very good. How big is the area you are analyzing? can you plot the PSC graph with coherence-colored connections? Can you show us the reflectivity map and the coherence map?
dp

Dear Prof.Daniele

1. For make sure that PSInSAR correct processing, how many factor must be considered besides from the attach image?
And how about your opinion based on my results
2. From PSInSAR, Must I have GPS data for verification? Any likelihood below:
(a). I have GPS data but the statiun far away from my area (equal to 8km)
(b). I did…[Read more]

Hi Santiago,
1. you choose a parameter on which you want to place a threshold (more advanced option: building your own set of points through “save selection” in “scatter plots”, and select it as a real file here)
2. you choose the threshold
3. you choose if you want to make the selection of points sparser or not. If not, place DS=0, DL=0. If you…[Read more]

Hello,

Could you offer me some guidance as for the Sparse Points Selection criteria in the APS tool?

I’m not very sure what each option means,
Thank you,

Santiago

Dear Prof.Daniele

I have done to choose Href, prof.
From the first step about geocoded refl map, I must re-process it again or no. Because from GCP selection, the SAR coordinat and Geo coordinat in GE it looks like match well.

Please, find attach file below

Best Regards,

Ana