Abstract
Five methods are described for electronic scoring targets that report, for each registration, a time, a landing position, a velocity at the target and an incoming angle, and that also keep the raw per-sensor arrival data. (1) The measured incoming angle is corrected for its dependence on where the bullet landed on the target, using a per-target linear calibration fitted from the target's own history, so that the residual angle reflects the direction the bullet came from. (2) The corrected angle, relative to the competitor's own string, is converted to a lateral distance at the firing line and compared with the known spacing between firing points, using same-day baselines only, to say from which firing point a registration was fired. (3) Whether the base station that receives target data reads its receiver on a fixed period, and what that period is, is inferred from recorded timestamps alone, and each site's window for matching events across targets is set from its own data. (4) Each target's velocity reading is compared with a muzzle chronograph over time, and the per-target velocity offset is tracked as a hardware health and drift indicator. (5) Each degraded registration is classified as a timing dropout (a sensor reading never arrived) or a rejected measurement (all readings arrived and one was refused), and degraded rates are monitored per sensor unit, target and relay against a healthy baseline.
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This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Young, Conrad, "Firing-point attribution from incoming angle, base-station timing inference, and sensor health monitoring for electronic targets", Technical Disclosure Commons, ()
https://www.tdcommons.org/dpubs_series/12106