PPT Slide

Database Content Requirements

for Different Altitudes

10,000

5,000

2, 000

1,000

500

200

100

50

20

10

1X: 1.3GB

9X: 13 GB

36X: 50GB

225X: 300 GB

900X: 1200 GB

Ground

Level

Operations

Low Altitude

Operations

Hi Altitude

Operations

Coarse

Terrain

Relief

Fine Terrain

Relief

Fine 3D models

Coarse

3D models

100m-30m

Target Area

Models

Cut/fill

~ 1/2 m

Obstacles, clutter

Trainer Application

Altitude (ft)

3m

Image

1m

Image

0.5m

Image

0.2m

Image

0.1m

Image

Terrain database processing times driven by relevant detail required

Terrain content & detail varies according to viewing altitude:
• Higher altitude viewing dominated by ~1m image content => very rapid construction
• Lower altitude & magnified views dominated by geometry content => more time required

Database Content & Generation Time

Grid:

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