140 
DFD 5.1.2: Determine derived state variables 
/ Calculate data \ 
LATLONxy w 'from differentiation 1 ! 
/ Provide \ / Compare ', plausibility f Assess \ / Selection/ 
sensor location ^ / data and I CMG*SOGx_w i data and »»ten-.-« - result of i usability ^ f of data to be! CM Q».SOG» 
criirtr.r. i ™ \ criteria I comoarison ^ ^ orovidRH ™ 
l criteria / 
\ 5.1.2.1.1/ 
v criteria / 
\ 5.1.2.1.2y' 
s comparison j 
. 5.1.2.1.3 > 
provided 
.5.1.2.1.4 / 
7 Calculate data \ 
hog ^ | from speed v j 
™ i components , f 
5.1.2.1.6 / 
y 
DFD 5.1.2.1: Course and speed over ground