Curved Earth Simulation

GARY ADAIR (adairg++at++qmsmtpgw.mugu.navy.mil)
25 Nov 1997 10:41:29 U

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We would like create a vis sim with radars, aircraft, and missiles. We will
use pfEarthSky.
On the surface of the ground of the pfEarthSky, we would like to draw lines
in X and Y representing discrete ranges from the radar.

We need to incorporate the curved earth surface model when laying down these
lines in X and Y. Does pfEarthSky produce a flat earth or curved earth ground
plane?

If pfEarthSky is flat earth, how does one go about using a curved earth model
with pfEarthSky? Eventually, we will have DMA terrain on the ground surface
but for now there is none. When we do put on DMA terrain we will want it to
follow the curved earth.

 Thanks in Advance
  Gary

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