A look at how to measure your pellet velocity… with radar.
Labradar is a system that measures the velocity of multiple projectiles, including airgun pellets as well as bullets fired from firearms. It measures pellet velocities to an accuracy of 0.1% and offers some interesting benefits for airgunners!Most serious air rifle shooters are familiar with the benefits of a chronograph – being able to measure the velocity of a fired pellet. Labradar takes this one stage further. It uses a different technology to chronographs and offers the potential benefit of being able to monitor the pellet’s velocity at more than one point during its flight.Traditional chronographs measure a pellet’s speed using photo electric sensors. Labradar does it using a Doppler radar system.
Source: Airguns of Arizona Blog » The Labradar Doppler Radar Chronograph – A Vital Tool For The Serious Airgunner