[OSGeo-Discuss] 30m SRTM worldwide?

[Sylvain Maillard]

Hi,

you can also download them from the earthexplorer ui from the USGS (
http://earthexplorer.usgs.gov)
more informations on
http://eros.usgs.gov/#/Find_Data/Products_and_Data_Available/SRTM


cheers,
Sylvain


2011/8/22 maning sambale <emmanuel.sambale at gmail.com>

> I got this news recently, from this website, one can download ~30m SRTM
> data:
> http://eoweb.dlr.de:8080/index.html
>
> "The X-band SRTM DEM data are provided in DTED format. Detailed
> information on the DTED format
> can be found in the document 'Product Description of the SRTM
> DTED-Format' (SRTM/PD-03/11/03)
> available at http://www.dlr.de/srtm/docs/SRTM-XSAR-DEM-DTED-1.1.pdf.
>
> The DEM and HEM data are in geographic (Lat/Long) projection, datum
> WGS84. The elevation values
> are also WGS84, as specified in the product description of the SRTM
> DTED-format.
>
> The DEMs inside the compressed archive are distributed as individual
> files, i.e. they are not
> mosaicked into one large DEM file. Each DEM covers an area of 15' by
> 15'. The filename of the
> individual DEM file specifies the bottom left coordinate of the
> corresponding 15' by 15' DEM tile.
>
> One pixel of the DEM files corresponds to approximately 25 m x 25 m on
> the ground. The elevation
> values are provided at a resolution of 1 m. The horizontal accuracy of
> the SRTM X-band DEMs is ±20
> m (abs.) / ±15 m (rel.), both 90% CE. The vertical accuracy is ±16 m
> (abs.) / ±6 m (rel.), both 90% LE.
> Precise information on vertical and horizontal accuracies for
> individual tiles can be found in the
> accuracy description record (ACC) of the DTED file. "
>
> I tried to access the public portal, but I just got the "Loading java
> virtual machine" message.
> Anyone here, who can access the data and is it really available to the
> public?
>
> --
> cheers,
> maning
> ------------------------------------------------------
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