NavCom Sapphire Rev.J - Manual (Page 166)

Sapphire Technical Reference Manual Rev. J
166
1.116 NAVELEVMASK (ASCII)
SF-3050 Sapphire SF-3040
This command is used to set the elevation limit for the code-based (pseudorange) navigation
solution, the RTK navigation solution, and the phase navigation solution. The velocity navigation
solution is also set to 2 less than the elevation given in this command. Measurements from
satellites below the elevation limit will not be used in the solution.
Command: [NAVELEVMASK] elevation
Parameter Definition
elevation
elevation limit for the code-based (pseudorange) navigation solution (float, degrees) (0.0 to
60.0)
Default: 7.0 degrees

Setting the elevation limit to use satellites lower than the default value may
introduce additional error in the navigation solution due to increased unmodeled
atmospheric errors. Setting the elevation mask higher than the default value may
affect availability of a navigation solution and may also cause higher PDOP values.
Example: [NAVELEVMASK] 8.0
Sets the elevation mask angle at 8 degrees

If their signals are strong enough, satellites below the navigation elevation mask
(but above the tracking elevation mask) will still be tracked and measurements will
be generated for them. They will be included in the raw data output.