SARPROZ ©

two possibilities:
1. either the orbit of that image is pretty bad (and what you see there are fringes due to the wrong geometry)
2. or that image is very noisy (maybe because of a storm) and what you see there is the result of noise fitting

you miss some of the toolboxes listed here: https://www.sarproz.com/pcodes-instructions/

if you process your data with the STAR graph,
you look for good and stable targets in time, which usually are also little affected by geometric decorrelation.
You could be in an area with average little spatial coherence but with a few sparse stable targets (like sparse isolated houses in the countryside) and everything would work.
so, when you…[Read more]

Hi Venera,
your APS processing looks good. After that, you have to process more points to get denser results. You can do it either in the MISP or in the GAR (Graph Analysis and Refinement) modules.
Options that you can try in case you cannot get results in your are of interest:
+ using a non-linear model for the deformation (input the number 5 in…[Read more]

are you starting matlab with the -noDisplay option? remove it. check the following
http://www.mathworks.com/help/matlab/release-notes.html#br5ktrh-3

overfit is caused by trying to fit too many parameters in few data. the range of v and h does not cause overfit. range of v and h should be chosen depending on the analyzed area

1. please read the forum rules https://www.sarproz.com/groups/sarproz-group/forum/topic/forum-general-rules/
if you encounter errors u MUST include lasterror and log files to get answers

2. ur data is sparse. exporting a raster of sparse data is not a good idea. use the filter/matrix visualization in scatter plots and export it from there

best

The log says that file M:ICELANDRESULTSMATLABInSarParam.mat is corrupted.
Unless this is a system/matlab problem (in which case the solution is surely more complex), simply delete the file and try again.
best

You can add your own DEM from the coregistration parameters
https://sarproz.com/manual/coreg_param.html
top right button
best

regenerate the mask file
the file is corrupted

Try please to see if this solves your issue: https://we.tl/mDZabGeY6b
Let me know
best

at the moment no other automatic DEM download is implemented. only SRTM.
you can anyway import your own geotiff DEM in geographic coordinates
best

when you zoom to the maximum resolution as you say you see dots and then a homogeneous blue. It means you have downsampled/filtered your data to the point that you don’t see the original points anymore. When this happens, inevitably you are comparing two different things: original data and filtered/downsampled one. If the colors don’t match the…[Read more]

can you post both colorbars?

Hi Mahtab,
colors are the same, but you cannot compare a continuous image with black-circled dots. The effect is obviously slightly different. Moreover, the two results are differently downsampled by googleearth. you have to look at them locally at the maximum resolution. there you will see that colors are the same
best

if you select all pixels in an area, all those pixels will be treated and exported.
you do not want all pixels in that area
you want all pixels with some additional thresholds, like temporal coherence higher than a value or whatever.
to apply multiple thresholds, use the “save selection” function in “scatter…[Read more]

this is an other good reading: https://engineering.purdue.edu/~perissin/CE697_insar/MTINSAR.pdf
avoiding estimating the DEM error can cause a wrong movement estimation (because the topographic phase acts as noise on the phase values).
but you are right, Sentinel has short normal baselines, and if your DEM is good, you can assume most of the…[Read more]

The short answer is: you need to take a course on the subject.
The longer answer: read this https://engineering.purdue.edu/~perissin/CE597_radar_remote_sensing/10336.pdf
and also all material you find on this website, including the papers here: https://www.sarproz.com/scientific-publications/
best