17
Table 4. Tracking parameters displayed in the GPS Satellites
and GLONASS Sat-
ellites panels
Parameter Description
# GPS SV PRN. If the character “*” is shown next to PRN in the column, this means that almanac data are
unavailable for the corresponding satellite.
Sn GLONASS SV Orbital Slot Number. If the character “*” is shown next to Sn in the column, this means
that almanac data are unavailable for the corresponding satellite.
Fn GLONASS SV Frequency Number.
EL Elevation angle in degrees. The signs “+” and “-“ immediately following the elevation angles indicate
that the corresponding satellites are either ascending and descending, respectively. If a satellite is at
maximum elevation, it is marked with “^”.
AZ Azimuth in degrees.
CA Signal-to-noise ratio (C/N0) in the C/A channel [dB*Hz].
P1 Signal-to-noise ratio (C/N0) in the P1 channel [dB*Hz].
P2 Signal-to-noise ratio (C/N0) in the P2 channel [dB*Hz].
TC Time elapsed since the last loss-of-lock in the C/A channel for the corresponding satellite. This time is
given in minutes or, if the symbol “:” is specified in the column, in seconds.
SS Satellite navigation status. For a complete description of the satellite navigation status structure, see
Appendix C. If a satellite is not used in position computation, its SS flag will be set to “-“. Otherwise “+”
will be displayed.
Note that “??” will be displayed anywhere in the panels where the corresponding parameters are
unavailable.
The user can sort data in a column in descending (ascending) order by clicking on the column’s ti-
tle.
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