| 摘要 |
In a target equipment in which transducers are provided to detect the pressure wave generated by a projectile the transducers being connectead to a timing and calculating device adapted to calculate from the time delays between the instants of reception of the pressure wave the trajectory of the projectile, a signal transmitter, comprising a spark generator, is used to tansmit sonic signals which are detected by the transducers. The signal transmitter can be usd to indicate the precise location or shape of the target and this information is stored in the computer memory. |
