The Microwave lnterferometer for Measuring the Time Displacement of a Projectile Within the Barrel of a Gun (Abstract)

This paper discusses the design and tests of a Microwave Interferometer, an instrument capable of measuring the time-displacement of a projectile within the barrel of a gun. A continuous record of the projectile time-displacement is obtained by using a CW-Doppler radar technique at K-band. A discussion is made of the effect of higher order modes within the gun barrel and of the effect of the leakage of the propellant gases ahead of the projectile.