BIATLON
The individual biathlon
event is composed of both men's 7.5 km individual
and womens 7.5 km individual. Competitors ski
a 2.5 km loop three times, stopping twice and assuming
a prone position to fire five shots at targets 10
m away. A penalty of one minute will be added to a
competitors overall time for each target missed.
In biathlon, all rifles
remain at the firing lane so competitors may ski unburdened.
Paralympic biathlon features two different rifle and
target systems. Competitors in the standing and sit-ski
categories use standard air rifles and fire at targets
consisting of black steel discs mounted in a rectangular
white frame. The center of the target stands 1 m (3.28
ft) above the ground. When hit, the targets
white frame swings over the black frame and provides
the shooter, officials and spectators with immediate
visual feedback.
Visually impaired athletes
use a computerized acoustic rifle system, which allows
the athlete to adjust the rifle aim according to audio
cues heard through a headset. As the athlete aims
the rifle toward the target, the frequency of the
sound increases. If the rifle is aimed directly at
the small target, the high frequency tone has a distinctly
elevated pitch. As the rifle moves away from the target,
the sound becomes deeper. A device on the target detects
the exact position of the rifle when the trigger is
pulled, enabling the computer system to detect and
display a hit or miss.