METHOD FOR DETERMINING SUPERSONIC PROJECTILE FLIGHT TRAJECTORY Russian patent published in 2018 - IPC F41J1/00 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measuring techniques, in particular to determining a gun location and parameters of the gun projectile flight trajectory. A method is proposed, in which sound sensors are oriented at an angle to the direction of the gun location. By means of a computer the information received from the sensors is processed. Herewith parameters of the projectile trajectory are determined in two stages. At the first stage the projectile firing point is determined by seismological methods. At the second stage the trajectory parameters are determined by acoustic methods. At the first stage three seismic receivers are placed along a straight line in the horizontal plane at known distances, which are used as seismic wave sensors. At the second stage three sound sensors are placed along the straight line in the horizontal plane at known distances. Fourth sound sensor is placed on the vertical line of one of the three sensors taken as the basic one. Parameters of the seismic wave at the first stage and of the sound wave at the second stage are measured using the time differences of the waves arrival to the sensors relative to the basic sensor. At the second stage maximum values of the sound wave harmonics are used found by the microcontroller and the comparator taking into account the known velocities of seismic and sound waves propagation. Basing on the known distances between the sensors and the recorded time of the waves reaching the sensor, equations are composed. Solutions of the equations make it possible to find the parameters for the first stage – the gun coordinates, and for the second stage – parameters of the projectile trajectory relative to the Earth.

EFFECT: high-accuracy determination of parameters of a projectile movement along the trajectory and the point of the projectile incidence is provided.

1 cl, 6 dwg