97
Commands
$PASHS,SEM,10,60,300
$PASHS,SEM,OFF
This command allows you to disable the SEM command.
SEM only applies to PEM or the elevation mask angle used in position computation.
ELM functionality remains unchanged without zoning.
SMI: Code Measurement Smoothing
$PASHS,SMI,d
Set interval in seconds of code measurements smoothing, which reduces the effect
of noise, where d is the smoothing interval in seconds, from 0 to 1000seconds. This
setting is independent of the internal receiver update interval.
The smoothing correction is provided in the MCA/MBN message, along with the
smoothing count. If the internal smoothing count is greater than 255, the smoothing
count in the MCA/MBN message is set to 255.
Figure 4.1. SEM Mask Zone
PEM=10
PEM=20
N
60
o
300
o
G12RevD.book Page 97 Tuesday, April 2, 2002 4:33 PM
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