WinFrog User’s Guide - Appendix C – GPS/MX 9400
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Note
:
Ensure that the value entered in the Ellipsoid Height dialog box refers to
the WGS 84 ellipsoid, not Mean Sea Level height.
Elev. Cutoff
:
Enter the elevation limit value (in degrees above the horizon). If a satellite drops
below this value, it will not be used in the position calculations.
Local Time Offset:
This value will be added to the observed GPS time to offset WinFrog system time.
MX51:
If the
Present
radio button is selected, WinFrog will accept RTCM 104 data from the
MX 51R/52R Beacon Receivers. You must also define the Frequency and Rate
settings to match the MX51 settings.
The MX 51R/52R are fully compatible with U.S. Coast Guard and IALA DGPS
beacons and operate with any DGPS beacon broadcasting in the 283.5 to 325.0
KHz band.
DGPS (mode):
The MX9400’s DGPS mode is set within this box. There are four different DGPS
modes: Off, Generate, Auto, and On:
Off
–
The MX9400 will not use differential corrections in its position computations
for that device even if they are available. Instead it will compute only a single
point GPS solution.
Generate
– The MX9400 will generate base station corrections based on the
GPS data being received and the position input at the top of the window.
Auto
– The MX9400 will automatically use differential corrections in its GPS
position calculations if those corrections are available to the receiver. If no
corrections are available, the MX9400 will compute a single point solution.
On
– Th MX9400 will always attempt to use differential corrections. If no
corrections are available, the MX9400 will not compute a position.
The
Maximum Age of Corrections
must also be defined. If the age of the received
RTCM corrections exceeds the entered value, the corrections are not applied to the
single point position.
If the
All
box
is checked, then RTCM corrections from any received base station will
be used;