Documents / Report
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.
“Works”12 pages
UNCLASSIFIED/ ,'P81l 81'1'11!1*L tl!!II!! 8HL"i' In a post-hoc examination of sources of human error in taped controller data, Chang developed a conceptual model of ATC task within a system of human, software, hardware, and environment using the SHEL23 approach of ergonomics. This study also examined several aspects of personnel management, but when overload was examined as the source of error, it was shown that all factors need to be considered along with their interaction. That is, the human and the external task cannot be considered in isolation of the environment of the other humans, and the augmentation capabilities of software, hardware, and the performance environment significantly affect error rates. 24 Operator overload can result in subsequent errors if sufficient recovery time is not allotted. Di Nocera examined specific error rates after short periods of overload. The first part of the study successfully proved that these so-called post-completion errors existed in times immediately after peaks in workload. The second part of the study examined whether an augmentation tool to assist in medium term conflict detection could reduce these errors. The subject population included 18 military ATC of varying experience. Workload was based on self-reported NASA-TLX. Results showed that augmentation processes helped junior controllers, but senior controllers were unaffected by the assistance. 25 UNCLASSIFIED/ ,'1'81l 81'fl81*1e lal!ii IUllo>J 9
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Report, from the dia collection. The PDF is mirrored here; the original link is under it. 31 pages are in the text index: search them above, or from the library's search.