Enhanced Night Visibility Series, Volume IX: Phase II—Characterization of Experimental Objects
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LIST OF ACRONYMS AND ABBREVIATIONS
General Terms
ENV |
Enhanced Night Visibility |
IR |
infrared |
VES |
vision enhancement system |
SUV |
sport utility vehicle |
UV–A |
ultraviolet A (wavelength 315 to 400 nanometers) |
Vision Enhancement Systems
|
|
HLB |
halogen (i.e., tungsten-halogen) low beam |
hybrid UV–A + HLB |
hybrid UV–A/visible output together with halogen low beam |
three UV–A + HLB |
three UV–A headlamps together with halogen low beam |
five UV–A + HLB |
five UV–A headlamps together with halogen low beam |
HLB–LP |
halogen low beam at a lower profile |
HHB |
halogen high beam |
HOH |
high output halogen |
HID |
high intensity discharge |
hybrid UV–A + HID |
hybrid UV–A/visible output together with high intensity discharge |
three UV–A + HID |
three UV–A headlamps together with high intensity discharge |
five UV–A + HID |
five UV–A headlamps together with high intensity discharge |
IR–TIS |
infrared thermal imaging system |
Objects
BC |
black-clothed cyclist |
BPL |
black-clothed pedestrian, parallel configuration |
BPP |
black-clothed pedestrian, perpendicular configuration |
CB |
child’s bicycle |
TT |
tire tread |
WC |
white-clothed cyclist |
WPL |
white-clothed pedestrian, parallel configuration |
WPP |
white-clothed pedestrian, perpendicular configuration |
Statistical Terms
ANOVA |
analysis of variance |
DF |
degrees of freedom |
F value |
F-ratio |
MS |
mean square |
N |
number of measurements |
P value |
statistical significance |
SS |
sums of squares |
Measurements
L |
luminance difference |
Lth |
threshold luminance difference |
C |
contrast |
cd/m² |
candela per square meter |
ft |
feet |
kPa |
kilopascals |
L |
luminance |
lx |
lux |
m |
meters |
nm |
nanometers |
psi |
pounds per square inch |
s |
seconds |
VL |
visibility level |
µm |
micrometers |
Calculated Variables
AF |
age factor |
FCP |
negative contrast factor |
t |
observation time |
TF |
time factor |
|
reflectivity |
E |
illuminance |
() |
angular scattering coefficient |
|
angle of observation |
dx |
length of lamina |
|
total scattering per unit length |
|