Apparatus and method for measurement of the muzzle velocity of a projectile or the like
An apparatus and method for measuring muzzle velocity (V 0 ) of a projectile, which apparatus includes a smooth weapon barrel or firing barrel as a waveguide, a signal generator which is electrically connected via a signal supply line to at least one transmission coupler in order to energize the weapon barrel or firing barrel, and a receiving line for passing on the signals measured at at least one receiving coupler to an evaluation device. If the velocity is measured after the projectile has passed through, the receiving coupler is located between the projectile base and the transmission coupler, while the receiving coupler is between the projectile nose and the transmission coupler when the velocity (V 0 ) is measured before the projectile passes through. The electromagnetic field of the empty weapon barrel is measured without a projectile, in front of the projectile or behind the projectile, or in combination. The muzzle velocity (V 0 ) is then determined from the measured signals.
1. An apparatus measuring muzzle velocity (V 0 ) of a projectile, comprising:
a smooth weapon barrel or firing barrel as a waveguide, a signal generator electrically connected to a transmission coupler by a signal supply line for energizing the weapon barrel or firing barrel; and
an evaluation device connected to at least one receiving coupler by a receiving line so that signals measured by the receiving coupler are passed to the evaluation device, wherein a distance between the transmission coupler and the at least one receiving coupler is variable and is selectable individually based on a first or a second mode selection of the waveguide, in the first mode the receiving coupler is arranged between a projectile base and the transmission coupler when a measurement is being carried out after the projectile has passed through, and in the second mode the receiving coupler is arranged between a projectile nose and the transmission coupler when the velocity (V 0 ) is measured before the projectile passes through.
2. The apparatus according to claim 1 , wherein two receiving couplers are provided, a first receiving coupler being arranged between the projectile base and the transmission coupler, and a second receiving coupler being arranged between the projectile nose and the transmission coupler so that the transmission coupler is between the first and second receiving couplers.
3. The apparatus according to claim 1 , wherein the signal generator generates a carrier in a continuous-wave mode (CW mode).
4. The apparatus according to claim 1 , wherein the signal generator generates a modulated signal.