| 摘要 |
<p>An aerial towed hit detector (9) used together with a sleeve target (1) can obtain an oscillatory movement in the roll angular direction because of the small aerodynamic stability of the target. For determining for example the path or the miss distance of a projectile passing by the target (1) and the hit detector (9), the position of the hit detector (9) in the air is measured for allowing a compensation to be made in the determination of hit parameters of the projectile. In the determination of the position of the hit indicator (9) two accelerometers (A, B) are used measuring the acceleration laterally or in a tangential direction. One accelerometer (A) is attached to the hit detector (9) and one to the tow rod (5). By forming the difference of the signals from the accelerometers (A, B) and integrating the difference signal in two steps information of the angular position of the hit indicator is obtained. This calculation is made in a microprocessor for those times when pressure waves from projectiles hit the hit detector (9).</p> |
