Phase to height

s1tbx Problem Reports
#1

Hello

I’m trying to make a DEM following the steps that I’ve read here in the forum. All the steps are made correctely to snaphu import, but when I try to do Phase to Height nothing happens. I’m using an iMac i5 with 18gb ram.

Can anyone help me?

Thanks

Luis Leitão
GIS Resercher

#2

did you also try phase to elevation instead?

#3

Yes, I have no problem with Phase to Elevation, then apply terrain correction and convert the elevation band to geotiff. But when I open in Qgis only appears two classes. And there is another problem, the negative values are to hight.

#4

conversion to GeoTiff is sometimes accompanied with issues. You can also directly open the img files inside the data folder in QGIS. Try to open the img file of the terrain corrected elevation band.

About the negative values - can you please post a screenshot where the problem becomes visible?

#5

I tryed to open the img file directly on Qgis but the result is the same. Later I will post here the images from sentinel 1 toolbox and from qgis.

Thanks for your help

#6

Captura de ecrã 2017-05-24, às 21.53.41.png1920×1080 833 KB
qgis.png1920×1080 427 KB

Hi

I’m sending the image in snap a the same image um egis. this is the result.

#7

The minimum value is way too low, probably caused by assignmemt of the NoData value. Stretch the colors between zero and 600 for better contrasts.