In Bore Projectile Speed Measurement System for use in Electromagnetic Launchers

This effort will develop and demonstrate the design of a Doppler-based laser radar system to measure in-bore velocity of a projectile accelerated by an electromagnetic launcher. The system will measure the absolute velocity at 30 microsecond intervals for a duration of at least 30 milliseconds. The velocity measurement resolution will be at least 10 meters per second. Absolute velocity measurement permit recovery of information after isolated data dropouts. The use of an optical measurement technique provides inherently high immunity to electromagnetic launcher generated noise.