The Satellite Tracking screen provides a graphical view of the satellites being tracked. Satellite data is described in the table below.
Field / Section |
Description |
Satellite Data |
|
Channel |
Indicates channels currently tracking satellites. Only tracking channels are shown. |
SV # |
Satellite Vehicle Number - This is the identification number of the satellite being tracked |
SNR |
Signal to Noise Ratio |
Status |
Indicates tracking status (see table below) |
Health |
Indicates the health of the satellite. Contents are H or U |
Azimuth |
Satellites horizontal position measured in degrees clockwise from the north |
Elevation |
Vertical position of satellite in degrees from the horizon |
PPSSigma |
This value is a measurement of the stability of the GPS engine’s 1PPS output versus the SSU’s selected local oscillator |
T3Sigma |
This is used to determine if the GPS Qualifier alarm should be set or cleared The Current 1PPS Sigma value is compared to the 3-Sigma threshold The 3-Sigma threshold is a dynamic value that is updated in real-time |
Status indicates the tracking status of the systems signal acquisition on the specified channel. Status messages are listed in the table below.
Status Message |
Definition |
SRC |
Searching |
FRQ |
Frequency locking |
COD |
Code locking |
MSG |
Unit is receiving a summary of visible satellite status |
TIM |
Setting time |
EPH |
Setting ephemeris data |
OK |
Satellite is being used in the timing solution |