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Candidate HUD Configurations to be studied in Year 2

Candidate HUD Configurations to be studied in Year 2. NCSU. Objectives. To select candidate HUD configurations to be used in 2 nd year study. Choose among 32 configurations used in 1 st year study. The selected image should represent High/Medium/Low perceived clutter conditions.

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Candidate HUD Configurations to be studied in Year 2

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  1. Candidate HUD Configurationsto be studied in Year 2 NCSU

  2. Objectives • To select candidate HUD configurations to be used in 2nd year study. • Choose among 32 configurations used in 1st year study. • The selected image should represent High/Medium/Low perceived clutter conditions. • Three configurations per each clutter condition.

  3. Summary of Clutter Ratings Predicted clutter ratings were calculated using the regression equation from the 1st year study . The correlation between measured and predicted ratings is r=0.8511 (p<0.0001).

  4. Selection of Displays from Rankings Steps and Criteria Define three groups representing high/medium/low clutter ratings - lower 22%, middle 25% and upper 22% (7~8 images) in each. Look for common displays across measured and predicted rankings in each category. Select diverse set of displays among those found in both measured and predicted lists within groups. Selection Common displays: N, M, O, O*, K. Common displays: C*, H, F, E* Common displays: B, I*, A*, D, P

  5. Selection of Features in High Clutter • Among the five common display images… • “O” was selected because represents an “EVS-only” condition. • “O*” was selected because it represents a full-featured HUD. • “K” is same as O* except with TCAS. (TCAS will not be considered in this experiment because of limited integration by actual manufacturers.) • “N” overlapped “O*” in features, except for SVS • “M” was included because it presents both SVS and EVS features. Final Selection: M, O*, O.

  6. Configurations of High Clutter Ratings Image O* Image M Image O SVS: Off EVS: On TCAS: Off TUN: Off PRIM: Off SVS: On EVS: On TCAS: Off TUN: On PRIM: Off SVS: On EVS: On TCAS: Off TUN: On PRIM: On

  7. Selection of Features in Medium Clutter • Among the four common display images… • “C* was selected because it doesn’t include SVS while others do. • “H” was selected because it presents the EVS feature. • “E*” was selected because it does not present PRIMARY mode symbology while all others do. Final Selection: C*, H, E*.

  8. Configurations of Medium Clutter Ratings Image C* Image H Image E* SVS: On EVS: On TCAS: Off TUN: Off PRIM: On SVS: On EVS: Off TCAS: Off TUN: On PRIM: Off SVS: Off EVS: Off TCAS: Off TUN: On PRIM: On

  9. Selection of Features in Low Clutter • Among the five common display images… • “D” was selected to because it represents an “SVS-only” condition. • “I*” was selected because it has no SVS, EVS, TUN, or PRIM feature. • (B is the same as I* except for TCAS. TCAS will not be considered in this experiment because of limited integration by actual manufacturers.) • “P” was selected because it includes PRIMARY symbology. • Presentation of PRIMARY symbology had a much stronger effect on clutter ratings in the 1st study than the presence of TUN (A*). Final Selection: I*, D, P

  10. Configurations of Low Clutter Ratings Image D Image P Image I* SVS: Off EVS: Off TCAS: Off TUN: Off PRIM: Off SVS: On EVS: Off TCAS: Off TUN: Off PRIM: Off SVS: Off EVS: Off TCAS: Off TUN: Off PRIM: On (Use D in order to have a condition with SVS, which is not included in B or I*.) (Use P in order to have a condition with PRIMARY symbology.)

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