Documents / Official release
This Defense Intelligence Reference Document, DIA-08-1101-001, is dated 15 December 2010. The Defense Intelligence Agency's Defense Warning Office produced it under the Advanced Aerospace Weapons System Applications program. It asks how many unmanned spacecraft one pilot could control in a future deep-space fleet, drawing on air traffic control and multiple unmanned vehicle research. It concludes the limits are about 16 craft for simple tasks, 7 for moderately complex ones and 4 for complex heterogeneous craft. It adds that physiological measures can signal operator overload.
From the source:Release of 2026-09-18 Incident: 12/15/10, Las Vegas, Nevada. Released with redactions. This document is a Defense Intelligence Reference Document (DIRD), a technical reference format used by the Defense Intelligence Agency (DIA) to capture baseline knowledge on a specific topic for later analytic use. DIRDs are best understood as reference and synthesis products rather than as original research. It is one of 38 DIRDs produced under the Advanced Aerospace Weapon System Applications Program (AAWSAP) between 2009 and 2011. Because AAWSAP’s scope permitted a broad range of supporting topics, not every DIRD in the series directly concerns aerospace systems or future threat assessment. The following summary reflects the DIRD’s scope and framing at the time of writing and should not be read as implying current validation of the concepts discussed. This DIRD examines how many unmanned spacecraft a single human operator could realistically supervise or control at once, using research from air traffic control and multi-vehicle remote piloting as rough analogs. The report argues that the practical limit depends heavily on task complexity: about 16 craft for simple monitoring or destination assignment, about 7 for moderately complex piloting or mission tasks, and about 4 for complex heterogeneous operations. It places particular emphasis on the operator’s ability to maintain a coherent mental “big picture” of multiple vehicles at once, and it suggests that automation and external displays can help by offloading working-memory demands, though not eliminating them. The document also highlights physiological workload measures as a possible way to detect or predict operator overload in real time. Overall, it presents multi-spacecraft control as a human-factors and systems-integration problem in which progress depends on managing cognitive limits through interface design, automation, and workload monitoring.
UNCLASSIFIED/ /FOR AEEICIAk WSE 8HLY Chapter 5: Discussion We have insight into the maximum number of tracked objects in a multiple space vehicle piloting experiment: it depends greatly on the complexity of the piloting and mission tasks. Brookings showed that in the ATC task, mild complexity affected performance even for a little as six planes being tracked by professional controllers, whereas these controllers regularly track up to ten. Ruff showed that when there is uncertainty in the augmentation system, a maximum of four craft can be controlled and tasked to complete missions. The number of four is consistent with standard estimates of human working memory being able to handle three to five disparate objects at a time. This implies that disparate, complex interfaces require resources from working memory to prevent loss of the big picture. Augmentation of the human capabilities mainly appears to be helping to maintain a higher number of working memory registers. Whether it is the handwritten blocks for the ATCs, the stored instructions for the Dixon study, or the dual displays of Cummings, the most effective augmentations in the studies above hold information for quick visual retrieval that the brain would otherwise keep in working memory. Any external automation system to assist the operator in making decisions will have an associated error rate. It was also shown in the ATC and piloting tasks that alerts need to contain a level of noise (false alarms) of 20-25% to avoid automation bias. Regard ing where the future of th is work is headed, it is certain that the field is just getting started. Apollo spacecraft required dozens of ground operators to mon itor for system failures, and just a few years ago it required two soldiers to operate a simple reconnaissance drone (most of them sti ll do). It is fortunate that ATC and UAV control appear to be extremely applicable to the initial direction of remote space vehicle operations. The 5-year timeframe should see spacecraft-specific simulator studies begin to appear in major peer-reviewed journals. The major advance to come in developing augmented human capability to pilot multiple spacecraft will be in understanding the cognitive organization of multitasking. With brain imaging it has been shown that multiple resource theory seems to follow the anatomical organization of the brain. In the next 40 years we will find out why the functional studies in multiple task completion don't seem to follow the predictions of multiple resource theory. UNCLASSIFIED/ j FOR OPPICIJ!IL U:!I! Oflt I 22
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Official release, from the pursue 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.