ASTER L1A HDF TO GEOTIFF

[nufaisa]

Greetingd
i am trying to generate DEM from ASTER STEREOPAIRS, but ASP or MICMAC are asking for metadata files, i extracted hdf file, but software is looking for paticular files like camera, focal length etc, how can i extract these files?

[LP DAAC - jwilson]

@nufaisa Thank you for your question. Other users have mentioned the code found here: https://github.com/bmenounos/process_ASTER/blob/main/aster_hdf2geotiff_micmac.py appears to produce outputs for Version 4 data that are consistent with those created by the HEG tool for Version 3. While we cannot guarantee that the code will replicate HEG Tool outputs in all cases, because we are not the curators of this code and we cannot vouch for or officially recommend this code, it does seem to provide what you are looking for in this instance. We are also exploring additional services to deliver Version 4 HDF-EOS ASTER products as GeoTIFF in the future; however, the timeline for availability is currently unknown.

If you have any questions or need further assistance, please contact LP DAAC User Services.

[nufaisa]

Greetings
AST14DEM_00404292025045104_20251009091208 Can you provide me with the information regarding the *acquisition date* of the DEM scene? Has the data been resampled/extrapolated from older versions or this data belongs to the time and date mentioned in the scene? Waiting for your response

[LP DAAC - jwilson]

@nufaisa Hi, The file name begins with the Product Short Name (AST14DEM), followed by the 3-digit Version Number plus the Date and Time of Acquisition designated as MMDDYYYYHHMMSS (00404292025045104), Date and Time of Processing designated as YYYYMMDDHHMMSS (20251009091208), and the Data Format (tif).

Additional information on variable attributes can be found in the user guide, and/or other product documentation here: https://www.earthdata.nasa.gov/data/catalog/lpcloud-ast14dem-004#documents-and-resources.

Please let us know if you have any questions after reviewing the documentations.
Janice

[LP DAAC - jwilson]

@nufaisa Our science team would like to know if that Github script we referred to you worked?

[nufaisa]

Yes, I have used the Git code, Its just for the conversion from HDF to TIFF, software demands the old version of metadata to be included for DEM generation, it doesnt work on new format.

[LP DAAC - jwilson]

@nufaisa We have forwarded your reply to our science team.
Thank you,
Janice