Improvement of the acoustic sensor - used in systems electro - acoustic detection of the projectile passes in the vicinity of a target aerial

摘要

P - acoustic sensor used in the acoustic measured variations in order to detect the projectiles passing in the vicinity of an airborne target provided with four sensors according to the process of the acoustic detector described in french patent 1.214.727, characterized in that it comprises two attenuators of the parasitic noises: - a shock absorber - holding device 7, which is resistant to very low temperatures, -, and a device 8 of the interference attenuator stationary waves that can be formed in the resonant cavity in the presence of strong turbulence, the assembly having the effect of improving the signal / noise ratio. / p & & p & field of application: aviation. / p