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  2. Tiebreaker - Wikipedia

    en.wikipedia.org/wiki/Tiebreaker

    Field target. Field target — a precision air rifle shooting sport — uses either a sudden-death or shot count tiebreaker. The sudden-death tiebreaker (usually used to determine a single place such as 3rd when 3 awards are to be given or between two shooters) consists of each tied shooter (order dictated or decided by coin-toss or other ...

  3. Fire-control radar - Wikipedia

    en.wikipedia.org/wiki/Fire-control_radar

    A fire-control radar (FCR) is a radar that is designed specifically to provide information (mainly target azimuth, elevation, range and range rate) to a fire-control system in order to direct weapons such that they hit a target.

  4. Systematic sampling - Wikipedia

    en.wikipedia.org/wiki/Systematic_sampling

    In survey methodology, systematic sampling is a statistical method involving the selection of elements from an ordered sampling frame.The most common form of systematic sampling is an equiprobability method.

  5. Air burst - Wikipedia

    en.wikipedia.org/wiki/Air_burst

    Early anti-aircraft warfare used time fuses to function when they reached the estimated altitude of the target. During World War II a "proximity fuze" was developed for antiaircraft use, controlled by a doppler radar device within the shell that caused it to explode when near the target. The idea was later adapted for use against ground targets.