Deat Pantaz,
This is a great idea but the problem is of the response time. The response time of the detection sys has to be around 5 microseconds as the speed of the projectile would be around 1600-1800 meters per second. I do not think that the photo detectors would give a fluctuation good...
I am in the process of developing an automatic marking system for range practice by the tanks. I wish to utilize sensors to check the hits or misses on a 6ftX6ft target (in the shape of paper/cloth on square metal frame). The sensor should be capable of detecting rounds hitting the target at...