Abstract
A system records the muzzle blasts on a rifle firing line with two or more microphones, typically ordinary smartphones placed on or behind the line, detects the onset of each blast, and uses the differences in arrival time between microphones to attribute each shot to a firing point. Each attributed shot is then matched to the shot registrations reported by an electronic target system (or used on its own where targets are paper). The result is an independent record of which firing point fired when, used to detect crossfires, shots fired with no registration, registrations with no shot, extra or missing shots in a series, and the lag between a shot and its registration. Listener devices detect blasts locally and send only small event messages; they need no knowledge of the target system. Calibration of each firing point can be done from the shooters’ own sighting shots, with no measurement of positions.
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Recommended Citation
Young, Conrad, "Attributing rifle shots to firing points by acoustic timing, and matching them to electronic target registrations", Technical Disclosure Commons, ()
https://www.tdcommons.org/dpubs_series/12104