NavCom StarUtil Rev.G - Manual (Page 99)

StarUtil User Guide – Rev. G
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with 255 being optimal for GPS performance, and 194 indicating decoding of SBAS
cor
to lack of dGPS corrections, cycle slips, acquisition process, etc.
0 levation: The vertical angle of the satellite off the
rections. Lower values indicate that the satellite is not available for use. This may be due
horizon ranging from 0 degrees to a
rence to
grees. The typical value for PRN’s 120 to 138 is 0.
12. CA: The L1 signal-to-noise value, which will vary depending on satellite elevation and any
obstructions between the satellites and the receiver. Optimal performance range for L1 C/N0
is 46dB to 52dB, although higher and lower values can be noted. A value > 50 is typical of a
satellite with 50º elevation or higher and a clear view of the sky.
13. P2: The L2 signal-to-noise value, which will vary depending on satellite State. Op
performance range for L2 C/N0 is 42dB to 48dB, although higher and lower values can be
noted. The typical value for PRN’s 120 to 138 is 0.
14. IODC: Issue of Data Clock. Indicates the issue number of the data as provided from the
GPS satellite in accordance with ICD-200C.
15. dGPS Age: The age of the current aided navigation correction. This value changes
depending on the correction source, and the correction interval. The typical value for PRN’s
120 to 138 is 0.
16. Status: The channel tracking status of each individual channel.
17. Reason for satellite failure: The reason for poor tracking or unreliable position information
for a selected channel/satellite.
18. Last: Shows the MM:DD:YYYY and HH:MM:SS of the last 0x86 message update.
A0 – Alerts
The A0-Alerts tab displays alerts in real time only. No alerts are archived.
1 . E
zenith of 90 degrees. The typical value for PRN’s 120 to 138 is 0.
11. Azimuth: The horizontal angle of the satellite relative to the receiver position in refe
North ranging from 0 (360) to 359 de
timal