Date: 13 Dec 96 04:26:01 From: "Peter Mchugh" <PMCHUGH@mail.hq.faa.gov> References: 1 2 3 4 Followups: 1 2
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email@example.com (Duane F Marble) wrote: >A substantial amount of the data used in digital terrain models comes >from analog maps (this includes a lot of the data developed for DMA). >The digital data can be no better than the original map data. I understood that Boeing has the DoD digital terrain data base (degraded by removing most man made features). Isn't this is the data base which permits low level operation of cruise missile navigation systems. and therefore adequate for enroute nav...and improvable at terminals for approaches?????