Motorola M12 Oncore User Manual page 34

Motorola GPS Products
M12 Oncore User' s Guide Supplement
Revision 1.0 01/25/00
VELOCITY FILTER
The Velocity Filter command controls the velocity filtering feature. The velocity filter
is useful in marine applications to filter out some of the wave motion in the reported
velocity.
The filter is a single order alpha filter, where alpha is the value entered by the user
ranging from 10 to 100 in increments of one. Alpha is then used in the filtered
velocity solution representing 10% to 100% of the last calculated velocity, the
remainder of which uses the previously reported velocity. If a value of 10 is entered
for alpha, the maximum filtering will be done. An alpha value this low must be used
with caution; the reported velocity will have extreme latency. An alpha value of 100
will result in no filtering, which is the default alpha value.
Default value: 100
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