An improved system and method are disclosed for facilitating target aiming
and aircraft control by flight crews using electronic displays. For
example, an aircraft display system is disclosed that includes a database
for storing target location and boundary data, a processing unit, a
position and direction determination unit for use in determining the
position of an aiming symbol on a display, a graphics display generator,
and a visual display. The processing unit determines whether or not a
selected target to be displayed is obscured or covered by the aiming
symbol to be displayed. If any portion of the target is obscured or
covered by the aiming symbol, then the processing unit directs the
graphics display generator to generate graphic control signals for the
visual display, which increase the transparency of the portions of the
aiming symbol that obscure or cover the target. Notably, the transparency
of any symbol (or portion of a symbol) can be increased if that symbol
obscures or covers a target being displayed or viewed. Thus, the
visibility of targets viewed using onboard visual displays is
significantly enhanced, whereby the targets are obscured by the symbols
used to aim and control the aircraft. Advantageously, target aiming and
aircraft control are facilitated, which reduces pilot workload and
navigation errors, and thus results in increased aircraft safety.