The sight uses a combination of a laser and a holographic reflective film to form the visible dot or circle in infinite space over the target. In practice it has been said to provide faster target acquisition.
Sophisticated targeting systems have been around for a while. Systems such as VTAS, which allow aiming via a head mounted display, but even older systems that used head up displays.
With all that technology available for fighter jets, someone just had to come up with a way to squeeze that into a rifle size scope...
Meet DARPA's "One Shot" system. The system uses a laser to estimate distance and crosswind profile and shift the target cross-hairs to where it expects the bullet to actually hit.
And there's Tracking Point's cool technology for a 3-stage targeting system. First, tag a target in your scope, then the scope tracks the target. If you're unhappy with the tagged target, you clear the tag and tag the target again. When ready, just press the trigger and aim, and the targeting system takes care of releasing a shot when the rifle is aimed correctly.
Tracking Point's solution can deal with crosswinds via user input, compared to DARPA's OneShot solution that uses a laser to estimate crosswind effects.
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