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When I was in port in Gitmo in 1987 there was a civilian boat in harbor with a large tethered balloon. They were mapping Cuba for the US Defense Mapping Agency(
by frankharv 7y ago
When I was in port in Gitmo in 1987 there was a civilian boat in harbor with a large tethered balloon.
They were mapping Cuba for the US Defense Mapping Agency(DMA).
So I would guess that DMA had a 3D terrain map around 1989.
I know it was used for cruise missile flight planning.
No idea what the resolution was.
Even with our very detailed underwater mapping the Navy still has areas that are not well covered.
https://www.popularmechanics.com/military/navy-ships/a24158/uss-san-francisco-mountain-incident/ https://www.popularmechanics.com/military/navy-ships/a24158/...