Hello,
I am looking for a terrain elevation database to develop a height-aided navigation algorithm.
In particular, I would provide a coordinate in (lat, lon) then the database could give the height with respect to mean sea level or ellipsoid, etc.
The spacial resolution should be less than 100 m and the vertical height accuracy of fewer than 20 m if possible.
Thank you for your help.
Hello, I have used this in the past. Works pretty well:
https://topex.ucsd.edu/gmtsar/demgen/
Dear Dr. Minh Gia Hoang
You can see and follow the following questions:
https://www.researchgate.net/post/What-are-different-sites-for-downloading-Digital-Elevation-Models-DEMs-of-land-and-sea-floor-elevations
https://www.researchgate.net/post/What_are_the_best_sites_for_downloading_SRTM_elevation_model_and_the_DTM2006_spherical_harmonic_topographic_expansion2
Maybe you can find an answer to your question
Regards
Abdelrahim Ruby
The STRM as Aditya mentioned is the way to go, you should get the 1 arc second one. https://www.usgs.gov/centers/eros/science/usgs-eros-archive-digital-elevation-shuttle-radar-topography-mission-srtm-1
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