The Value of Special Training and Job Aids for Improving Unattended Ground Sensor Operator Performance.

摘要

Requirement: To determine the value of unattended ground sensor operator training and job aids derived from an analysis of errors and to determine the effect on operator performance of target-activity level and number of sensors used in a string. Procedure: The training program and job aids were evaluated using the pretest and posttest design with 4 hours of scenarios containing typical target patterns at two levels of target activity generated by 2-, 3-, and 4- sensor strings. Operators detected and identified targets and estimated their speed and number. Results: The individualized training program resulted in significantly improved operator interpretation performance in target detection rights, identification rights, target speed, and target quantity estimation. Use of the job aid (nomograph) significantly improved performance in identification rights, target speed estimation, target quantity estimation, and reporting time. Student acceptance of the individualized training approach and both job aids was high. Operator performance on 3- and 4-sensor strings was 77% detection completeness with virtually no false alarms. Detection of targets was better during low-target activity than during high-target activity. The use of three sensors in a string resulted in the same operator performance as the use of four sensors.