Abstract
Five methods are described for checking the settings and records of electronic scoring targets that store, for each registration, a time, a landing position and a velocity at the target, and for each string a bullet diameter, a target face and a distance. (1) A wrong bullet-diameter setting is detected by comparing each string's stored setting with the match's and the line's; the values it affected are found by re-scoring every registration under both diameters, with margins; and the same re-scoring identifies the shots that sit on a scoring line. (2) A string whose stored distance and face were set when it was saved, rather than when it was fired, is detected by comparing the save time with the time of the range's distance change and the string's velocity with what that distance should produce. (3) A change of ammunition within one competitor's string is detected from velocity at the target, as a step that persists across consecutive shots or a single shot displaced by a consistent amount, separating a different load from a target fault. (4) Registrations stamped before the device's clock was set are detected from implausible dates and from a jump in time at the first connection, and are re-timed from their neighbors. (5) Shots recorded by a chronograph with its own clock are paired with target registrations by searching for a per-session clock offset, with clock eras detected rather than assumed.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Young, Conrad, "Scoring-setting, distance-label, ammunition and clock checks from electronic target records", Technical Disclosure Commons, ()
https://www.tdcommons.org/dpubs_series/12203