On the Correlation of Two Human Tracking Error Performance Metrics.
AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OHIO
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A laboratory tracking study was accomplished to determine the degree of correlation between mean square tracking error and a hit scoring metric. Prior studies had established high correlation between the hit scoring metric and miss distance in a simulation of antiaircraft artillery AAA systems. Further, in this same study mean square tracking error and the hit score metric was uncorrelated. The present study used a Gaussian forcing function and twenty subjects in a laboratory tracking task. A prediction of hit scores based upon mean square tracking error was developed based upon the assumption of Gaussian tracking behavior by the trackers. The predictions of the theory and the results of the tracking studies compared favorably. Thus, if tracking error is Gaussian stationary the hit score can be predicted from the mean square tracking error. If the hit score and mean square tracking error are uncorrelated, then the tracking behavior of the subjects is not stationary Gaussian. Modified author abstract