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Defense Intelligence Reference Document Cognitive Limits On Simultaneous Control Of Multiple Unmanned Spacecraft

Defense Intelligence Agency · 31 pages · text from the file's own layer

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.

  • p. 8 …The most frequently used standardized self-report tools are the NASA Task Load Index (NASA-TLX…
  • p. 14 …Workload was based on self-reported NASA-TLX. Results showed that augmentation processes helped junior controllers…
  • p. 19 …of aircraft. NA: number of aircraft; TLX: NASA self-report workload metric; Std SC: normalized skin…
  • p. 20 …solving, and develops a refinement of the NASA-TLX called TU. Averty's Traffic Load Index…
  • p. 29 …Development of NASA-TLX (Task Load Index): Results of Empirical and Theoretical Research, (1987). 4 Reid…
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Contents
Summary ................................................................................................................iv
Chapter 1: Introduction ......................................................................................... 1
Chapter 2: Measurement of Mental Workload ........................................................ 3
Subjective Measurements .................................................................................. 3
Performance Measures ....................................................................................... 4
Physiological Measures ...................................................................................... 4
Cardiac Function ............................................................................................ 5
CNS Measurements ........................................................................................ 6
Ocular Measurements ..................................................................................... 6
Skin Measurements ........................................................................................ 7
Serum Levels of Hormones ............................................................................. 7
Chapter 3: Studies in Cognitive Workload for Air Traffic Controllers ..................... 8
Modeling the Air Traffic Control Task ............................................................... 15
Chapter 4: Studies in Command of Multiple Semi-Automated Vehicles ................ 18
Chapter 5: Discussion .......................................................................................... 22
Chapter 6: Conclusions ........................................................................................ 23
References ........................................................................................................... 24
Figures
Figure 1. One-dimensional Representation of Changes in Performance as Workload
Varies ..................................................................................................................... 2
Figure 2. Typical EKG Signal for a Normal Heartbeat .............................................. 5
Figure 3. Air Traffic Control .................................................................................. 10
Figure 4. Representation of Performance Results from Brookings Study .............. 13
Figure 5. Information Processing Model for a Human Operator ............................ 16
Figure 6. Examples of Unmanned Military Vehicles .............................................. 19
Tables
Table 1. Variables used in Determining Complexity of the Traffic .................. 11
Table 2. Correlations among Physiological Variables ..................................... 14
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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.