Candidate HUD Configurationsto be studied in Year 2

NCSU

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.

Summary of Clutter Ratings

Experimental

SVS EVS TCAS Tun. Prim. condition ratings ranking ratings ranking

A -1 -1 1 1 1 abc 10.2 24 9.89 24

B -1 -1 1 -1 -1 c 5.15 32 5.61 31C 1 -1 1 1 -1 bce 10.55 23 10.27 21

D 1 -1 -1 -1 -1 e 9.1 29 8.81 28E 1 -1 -1 1 1 abe 13.25 13 13.69 12

F 1 -1 1 -1 1 ace 12.1 19 12.27 16G -1 -1 -1 1 -1 b 9.8 26 10.23 22

H 1 1 -1 -1 1 ade 12.5 17 12.91 14I 1 1 1 -1 -1 cde 9.4 27 9.09 25

J -1 1 1 -1 1 acd 15.5 6 15.19 8K 1 1 1 1 1 abcde 16 4 16.45 5

L -1 1 1 1 -1 bcd 9.95 25 10.11 23M 1 1 -1 1 -1 bde 17.95 2 17.39 4

N -1 1 -1 1 1 abd 18 1 17.73 1O -1 1 -1 -1 -1 d 15.5 6 15.93 7

P -1 -1 -1 -1 1 a 9.4 27 8.83 27

A* -1 -1 1 1 -1 bc 8.50 30 5.21 32B* 1 -1 1 1 1 abce 14.25 11 14.95 9

C* -1 -1 -1 1 1 ab 12.88 14 10.43 19D* -1 -1 1 -1 1 ac 11.13 22 10.29 20

E* 1 -1 -1 1 -1 be 11.88 20 13.49 13F* 1 -1 -1 -1 1 ae 13.38 12 9.01 26

N* 1 -1 1 -1 -1 ce 12.88 14 7.59 30I* -1 -1 -1 -1 -1 0 6.25 31 8.63 29

G* -1 1 -1 -1 1 ad 12.63 16 16.13 6H* -1 1 1 1 1 abcd 14.38 10 14.79 10

J* -1 1 1 -1 -1 cd 11.50 21 10.51 18K* 1 1 -1 -1 -1 de 14.88 9 12.71 15

L* -1 1 -1 1 -1 bd 12.25 18 17.53 3M* 1 1 1 -1 1 acde 15.63 5 13.77 11

O* 1 1 -1 1 1 abde 17.25 3 17.59 2P* 1 1 1 1 -1 bcde 15.00 8 11.77 17

measured predicted

In-filight

Scenario

Bonus

Image Features

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).

Selection of Displays from Rankings

Common displays: N, M, O, O*, K.

Selection

Steps and Criteria

1. Define three groups representing high/medium/low clutter ratings - lower 22%, middle 25% and upper 22% (7~8 images) in each.

2. Look for common displays across measured and predicted rankings in each category.

3. Select diverse set of displays among those found in both measured and predicted lists within groups.

Common displays: C*, H, F, E*

Common displays: B, I*, A*, D, P

Group ranking measured predicted1 N N2 M O*3 O* L*4 K M5 M* K6 O G*7 J O 13 E E*14 N* H15 C* K*16 G* F17 H P*18 L* J*19 F C*20 E* D*32 B A*31 I* B30 A* N*29 D I*28 I D27 P P26 G F*

lowest(lower22%)

medium(middle

25%)

highest(upper22%)

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.

Image N M O* K O

SVS 0 1 1 1 0

EVS 1 1 1 1 1

TUN 1 1 1 1 0

PRIM 1 0 1 1 0

Configurations of High Clutter Ratings

Image OImage 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

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*.

Image C* H F E*

SVS 0 1 1 1

EVS 0 1 0 0

TUN 1 0 0 1

PRIM 1 1 1 0

Configurations of Medium Clutter Ratings

Image H Image E*Image C*

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

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

Image B I* A* D P

SVS 0 0 0 1 0

EVS 0 0 0 0 0

TUN 0 0 1 0 0

PRIM 0 0 0 0 1

Configurations of Low Clutter Ratings

Image PImage I* Image D

SVS: Off

EVS: Off

TCAS: Off

TUN: Off

PRIM: On

SVS: Off

EVS: Off

TCAS: Off

TUN: Off

PRIM: Off

SVS: On

EVS: Off

TCAS: Off

TUN: Off

PRIM: Off

(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.)