Specifications

VP ONCORE COMMAND REFERENCE
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SATELLITE SELECT OPTIONS (@@Ah)
This command sets the Satellite Select option to either automatic,
manual, or highest-in-the-sky satellite selection. With the "automatic"
option enabled, the Motorola VP GPS receiver automatically selects the
set of satellites to track with the best geometry (selection criteria
optimized for the selected xDOP type using the @@Aj command), the
xDOP hysteresis parameter (@@Ak command), and position fix type
(@@Ar command
). With the automatic satellite select option enabled,
the GPS receiver will change satellites to maintain the set with the best
geometry based on each new computation of satellite geometry.
Selection of the manual satellite select option requires the user to select
the satellites to be tracked.
With the "automatic highest-in-sky" mode, the receiver simply tracks the
six (or eight, if the receiver is an eight channel unit) satellites currently
highest above the horizon. Use of this option will result in more position
fixes in urban canyon environments when more than six (or eight)
satellites are visible at the expense of accuracy since geometry is not
considered as a satellite selection criterion when this option is selected
The GPS receiver will power-up to either automatic or highest-in-the-sky,
depending on which option was last selected by the user. The receiver
will never power-up in manual mode. When manual mode is selected the
receiver will continue to track those satellites set by either the automatic
or highest-in-the-sky selection processes when the Satellite Select option
is set to manual satellite select. The user can then change any satellite
on any channel using the Manual Satellite Select command.
The VP always remembers the automatic satellite mode option last used
when the GPS receiver is powered up. The GPS receiver continues to
track those satellites set by automatic satellite selection processes when
the Satellite Select option is set to manual satellite select. The user can
then change any satellite on any channel using the Manual Satellite
Select command.
Default value: Automatic
29 Synergy Systems, LLC 05OCT01