At 11/27/2005 08:49, you wrote:
>There is also a new data set from SRTM (the Shuttle Radar Topography
>Mission) where a majority of the earth's surface was measured using
>microwave interferometry. The accuracy isn't necessarily superior to
>existing data (I think 50 feet was the predicted elevation accuracy), but
>the nice (or bad) thing about the data is that it includes obstructions
>(buildings, water tanks, etc.). Maybe Bob NO6B knows more about it - I
>think JPL was involved in it?
SRTM flew in 2000; IIRC the complete data set went public about 2 years
later. AFAIK all human-made structures have been removed. YMMV. HTH.
Bob NO6B
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