Specifications

VP ONCORE COMMAND REFERENCE
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6-CHANNEL ALERT PLANNING (@@Cd)
This utility command allows the user to compute satellite visibility
information for other locations than the GPS receiver's current location.
This can be accomplished in either the Idle or the Position Fix modes.
The input command allows the user to specify the date, time, location,
satellite mask angle, and GMT offset correction to compute the satellite
visibility information, and the output response message returns satellite
elevation, azimuth, and Doppler information for up to 12 visible satellites
as well as DOP vs. satellite selection combinations for up to 9 different
combinations. The receiver uses the current datum ID, Satellite Ignore
List, Position Fix Algorithm Type, and xDOP Computation Type
parameters in order to compute the Alert Plan.
The time the GPS receiver requires to compute the output response
message is a function of the current loading on the Oncore GPS receiver
CPU. The response message will be output much faster if the GPS
receiver is placed in the Idle mode before the input command string is
entered. Otherwise, the output message is made available when there is
sufficient time for the GPS receiver to process the input command and
compute the output visibility data. The user can build a visibility vs. time
table by inputting alert request commands, one at a time, that increase
the time parameter at some constant rate (i.e. every 15 minutes).
111 Synergy Systems, LLC 05OCT01