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Ensuring fidelity using visual warping techniques
Technical Paper
2002-11-0019
Sector:
Language:
English
Abstract
During the past two decades, one of the major causes of aircraft
accidents has continued to be ""Controlled Flight Into
Terrain"" (CFIT). In response to this problem, aircraft
manufacturers and their component vendors have steadily enhanced
onboard equipment to give the pilot more information about the
world outside the aircraft. The accurate simulation of real- world
terrain, radio aids, and visual topography, therefore, is of
critical importance in flight simulation. This new need for
accurate simulation of the radio navigation environment has forced
a reconsideration of the method used to align visual scenes to
radio landing aids.
The common method of obtaining alignment between features of the
visual scenes and the radio landing aids is by redefining the
location of radio navigation stations. We discuss the serious
disadvantages of this method and the impact that relocated stations
have on the Flight Management Computer.
This paper also provides an extensive description of an
alternative method of alignment developed by the United Airlines
Simulator Engineering Department. This alternate method, called
VisWarp, aligns the visual scene by warping (i.e., offsetting) the
location of the visual-system eye point. This provides the crew
with a visual view that is consistent with the cockpit indications
of aircraft location, relative to runways, gates, and other visual
features that have locations documented in the published radio
navigation database.