ground ct 
tense im 
performa: 
For t: 
200 ft tl 
target S 
assumed . 
An a. 
be incre 
This wou 
an incre 
is subst. 
If w 
the acro 
C 
ACT 
where h . 
The ; 
degrees 
CACT 
or sligh 
mobile t 
oblique 
The | 
selectio 
A mo 
Sensor r 
implies 
detector 
size; a 
because 
infrared 
the atmo 
percent 
atmosphe 
The 
than in 
up to ab 
contrast 
a 300 K