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This Defense Intelligence Reference Document, dated 15 December 2010, is a Defense Intelligence Agency report from its Advanced Aerospace Weapons System Applications (AAWSA) Program. It looks at how many unmanned spacecraft one human pilot could control during future deep-space missions, drawing on research into air traffic control and piloting of multiple unmanned vehicles. It concludes that the limits are about 16 craft for simple tasks, 7 for moderately complex tasks and 4 for complex mixed fleets. It adds that physiological measures can signal when an operator is overloaded.
“Mission Control”7 pages
UNCLASSIFIED//F9A: 9FFHil.t.k Wfili 8Hk'/ audio processing, and this is where multiple resource theory enters: different resources can be considered independent if demands on one resource do not tax the availability of capacity of the other. Performance of a task can be high or low: in general if spare capacity is available, performance is high, and if capacity is limited or exceeded, performance is low. Moreover, task demand enforces a fixed theoretical relationship between mental workload and task performance: this is shown in Figure 1. 2 High • • • • •••••• Low Relationship between Workload and Task Performance Performance Workload D Al A2 A3 B Task Demand Figure 1. One-dimensional Representation of Changes in Performance as Workload Varies. Task demand increases to the right. In the three A regions, performance remains unchanged: A2 is optimal, where a trained operator exerts minimal effort to maintain a set level of performance. At times of low demand the operator exerts effort to maintain vigilance (Al) until demand is so low, the subject disengages from the task (D). The workload curve is not well defined at very low levels of demand (dotted lines). At the other end, as demand increases, the subject can exert effort to keep up with demand (A3). Additional effort maintains performance until degradation begins (B), and in the overload condition, region C, performance is degraded beyond acceptable levels. While effort is maintained in overload, some low level of performance exists. UNCLASSIFIED//509 AEEJCJOP 1!55 ADIi X C
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Report, from the dia collection. The PDF is mirrored here; the original link is above. 31 pages are in the text index: search them above, or from the library's search.