a synthesized target system utilizes emitters in the microwave or laser frequency for generating an electromagnetic energy curtain . detectors are operatively disposed for detecting reflections within the energy curtain caused by penetrations of the curtain by one or more projectiles . a monitor is connected to the output of the detectors , and a recorder is used for storing the data output of the monitor . the event of passage of projectiles through the energy curtain , and their location upon penetration thereof , is monitored , scored , recorded and can be printed out , in hard - copy form , in real time . physical targets and down - range human intervention therewith are eliminated .