MAP-01-011 HFI Technical Guide - Human Factors Integration ...

MAP-01-011 – HFI Technical Guide (STGP 11)HFI Technical IssuesSystems will increasingly monitor and manage the flow of information rather thattaking an active role in generating the basic data needed to make tacticaldecisions. Human decision-making will remain critical where technology islimited or situations are complex. Modern weapon systems may require nohuman intervention, beyond the need to over-ride pre-set firing parameters, oncethreats are identified and rules and zones of engagement are defined. The levelof user performance required should set the requirements for an operable userequipmentinterface. User performance can be expressed as statements of thespeed and accuracy needed to perform mission critical tasks. For example:• Time to acknowledge the detection of a contact on the sonar, radar, EW orother sensors.• Time to process a contact from detection until it is associated with a track.• Accuracy of classifying a contact as a threat or non-threat.• Throughput time to prepare and disseminate a plan e.g. EMCON, pointAAW defence, ASW.In platform management the user-equipment system must operate effectivelywhen a user is conducting standard operating procedures, emergency operatingprocedures and maintenance operations. Examples of relevant userperformance include the following:• Time to bring plant on-line e.g. main propulsion, secondary propulsion, airpurification etc.• Time to re-configure systems following equipment failure or damage: e.g.re-distribution of electrical, hydraulic, fuel, water or other services.• Accuracy of diagnosing equipment or damage states: e.g. fire detection inunmanned machinery spaces, loss of main or auxiliary systems, electricalfailure etc.• Throughput time to perform repetitive or specific actions: e.g. time to re-fuelaircraft, unit time per Replenishment at Sea (RAS) operation, time to hosedown a deck, time before fire-fighting capability is available in eachplatform space.This approach enables operability to be defined and linked to mission criticaltasks. User performance statements can be used to set operability criteria and todefine user-equipment prototyping requirements.15.1.6 Selection of Displays and Control Devices15.1.6.1 IntroductionDisplay and control device technology is advancing rapidly and it is important thatenough flexibility is built into the acquisition process to take advantage ofincreases in capability. Notwithstanding improvements in technology it isimportant that the basic requirements for physical display and control devices arecompatible with user capabilities and the tasks to be performed. For displaydevices screen size, colour capability and resolution must be appropriate.Control devices must be usable in the range of conditions experienced on-boardvessels and be appropriate for the speed, accuracy and other characteristics ofNov 2006 Page 15-6 Issue 4