Mailing List lml@lancaironline.net Message #3176
From: Marvin May <maymarv@ucla.edu>
Subject: Re: Terrain Data
Date: Tue, 17 Aug 1999 15:11:32 -0700
To: Lancair List <lancair.list@olsusa.com>
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>
> "CLARIFICATION CONCERNING THE USE OF TERRAIN DATA IN MOVING MAP
DISPLAYS:
>
> Terrain data are currently available and can easily be incorporated into
> moving map displays. However, existing terrain data is not accurate and
can
> be seriously misleading. The problem is further exacerbated by GPS error
> introduced by the military. Because of the errors, most moving map
display
> manufacturers have prudently decided to delay displaying the terrain
data
> until it is reliable.
>
> Among these manufacturers, Archangel is one of the companies selected by
> NASA to help correct the data presentation problems and develop reliable
synthetic vision displays.
     The corrections are expected to be completed next year. At that time
3-D terrain will be
> included on Archangel and other moving map displays."
>



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