Apparatus and method for determining projectile impact locations

Process for detecting the range from an origin and lateral displacement from a predetermined axis of the landing location of a golf ball on a golf driving range comprising the steps of:

• a) sensing at a first sensing location proximate the driving range and remote from the landing location and generating a first signal indicative of one aspect of the landing location;
• b) sensing at a second sensing location proximate the driving range and remote from the landing location and generating a second signal indicative of the same aspect of the landing location;
• c) said aspect being the time of travel of vibrations caused by landing of the golf ball at a moment of impact;
• d) initiating a timing measurement at an initial location and at a prescribed time with respect to the moment of impact of the golf ball on the driving range;
• e) sensing the impact with the first and second sensors at the first and second sensing locations placed at predetermined locations with respect to each other and the initial location;
• f) measuring the time lag between said initiating and the time the impact is sensed at said first and second locations;
• g) processing said first and second signals mathematically by triangulation to generate a third signal indicative of the range and lateral displacement.