DSM from Sentinel-1

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There are a lot of topics in here dealing with this challenge:

DEM generation

Hello! I tried to created a DEM for Atacama desert in SNAP, with the following steps: Corregistration by using the function “S-1 TOPS Corregistration” (Sentinel 1 Toolbox) “Interfarogram Generation”. In this step I’m considering the corregistered IW Swath; deburst “Goldstein Phase Filtering”; “Snaphu Export”. I’m not applying the topographic phase removal, since I’m interest in the resulting DEM and not DinSAR, “Snaphu Import” of the unwrapped phase; Accordining to the Nest turtorial for Etn…

DEM creation

After interferogram generation, topo phase removal, and goldsten filtering in s1tbx using Sentinel-1A data, during terrain correction there is an option to ‘include DEM’. Does the DEM produced by that way a STANDARD way of producing DEM? If not can someone send me your favourite flow steps for DEM generation using master and slave SLC files?

How to create a DEM with Sentinel 1 toolbox

Hello all, I am trying to create a DEM of my area of study and am having trouble in doing so. I believe I’ve generated the right interferogram for my area. What is the next step after the interferogram and the preceding steps after that? I’ve seen three videos offered by ESA about Sentinel 1 but none of them show exactly what I need done. Is there a tutorial or some sort of article I can read? Thank you, Isuf Vlashi Inteferogram.pdf (293.6 KB)

How to generate DEM in the process of InSAR at last?

data:radarsat-2 slc pc memory:8G toolbox:st1bx problems:I’ve completed the process of unwrapping with tutorials.And I didn’t use Topographic Phase removal function in the processing.But I met the error.And I can’t work out t with the help instrutons.the error is as follow image: [image]

DEM generation after phase unwrapping of Interferogram

how to generate DEM once interferogram is generated ?

Generating DEM by using SLC Sentinel1 TOPS

Hello! I’ve been testing some Sentinel tiles to generating DEMs by interferomety, however the results are really poor when compared to SRTM 1arc sec images. It seams that the problem is related with the scenes since I’ve followed exactly the steps presented in the tutorials. Is there any tool that allows a previous visualization of the interfarogram as available for ERS scenes in EOLI (ESA)? The process is really time consuming, which makes it difficult the choice of suitable tiles for DEM gen…

Accuracy of DEMs and deformation maps computed by SNAP?

Hello everyone! I’m working with 2 Sentinel-1 images in the IW mode. I have been able to obtain the DEM of the place of study and the deformation between the two measurements, I have exported my results to a kmz format file in order to open them in Google Earth. The elevation measurements are contained between 657,56 meters and 1520,36 meters while the deformation values are contained between 0.056 meters and -0.009 meters, well, now my question is: what is the accuracy of that values? Does th…

Problem in DEM generation

hi all, I have unwrapped the interferogram image the whole process was done using SNAPHU export option. the process run more than 1hr. but when i try to generate DEM it shows that no unwrapped phase was found. so how can i solve the problem? can anybody please help me out.

Beginner advice : DEM, choice of sentinel data, snaphu

Hello, I am a new user of SNAP and I have difficulty understanding the big idea among the abundance of information available. I started looking into inSAR principle, the tutorial about sentinel+SNAP, and the ones written by Luis Veci about Interferometry “TOPSAR and Stripmap”. Now here is what I want to do : I am trying to obtain DEM of mountain (chinese ones), we were using software like Global Mapper before, but we were hoping that sentinel data could give us a better accuracy, or at least …

Creating DEM

Hi, I am new in S-1 Toolbox and want to know how to creat DEM using L1 GRD product in Toolbox?It is important for me.Thanks.