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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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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. • Two or three configurations per each clutter condition.
Summary of Clutter Ratings Predicted clutter ratings were calculated using the regression equation from the 1st year study . The correlation between measured rating and predicted rating is r=0.8511 (p<0.0001).
Selection of Displays from Rankings Steps and Criteria Define three groups representing high/medium/low clutter ratings - lower 20%, middle 20% and upper 20% (6 images) in each. 2. 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, K, O* • -O* is quite similar to K except the absence of TCAS (which had the lowest regression coefficient). • -Since N & M don’t have TCAS, K was selected. • Final selection: N, M, K • Common displays: H, F, C* • No alternatives based on common displays. • Final selection: H, F, C* • Common displays: B, A*, D, I*, P • I* is quite similar to B except the absence of TCAS. • P has PRIMARY symbology and others don’t. • D has SVS while others don’t. • Final selection: A*, D, P
Configurations of High Clutter Ratings Image K Image N Image M SVS: Off EVS: On TCAS: Off TUN: On PRIM: On SVS: On EVS: On TCAS: Off TUN: On PRIM: Off SVS: On EVS: On TCAS: On TUN: On PRIM: On (Use K in order to have a condition with TCAS, which is not in O*.)
Configurations of Medium Clutter Ratings No alternatives based on common displays across measured and predicted ratings. (Image C*) Image H Image F SVS: On EVS: On TCAS: Off TUN: Off PRIM: On SVS: On EVS: Off TCAS: On TUN: Off PRIM: On SVS: Off EVS: Off TCAS: Off TUN: On PRIM: On
Configurations of Low Clutter Ratings Image D Image P Image A* SVS: Off EVS: Off TCAS: On TUN: On 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.)