Satellites - Tracking Information

This table shows information about the satllites that are currently being tracked.
PRN:
The numeric identifier of the satellite tracked on the channel. To sort by the satellite PRN number click on PRN at the top of the column.

Elv:
The elevation of the satellite, in degrees above the horizon. To sort by elevation click on Elv at the top of the column.

Azm:
The azimuth (direction) of the satellite, in degrees clockwise from True North. To sort by azimuth click on Azm at the top of the column.

L1 SNR:
L2 SNR:
The Signal to Noise Ratio (SNR) of the satellite on either the L1 or L2 frequency. Scaled to a 1 Hertz bandwidth (C/N0 - "C to N-zero".)

IODE:
Issue of Data Ephemeris - The numeric identifier for the latest satellite data collected from this satellite.

URA:
User Range Accuracy - The satellite's estimate of the accuracy of its ranging signals, in meters.

Health:
Health status as provided in the satellite's most recent data. When Healthy is displayed in this column it indicates that a value of zero, or perfect health, was received. A non-zero values indicate that the satellite has been marked as unhealthy. See the GPS ICD-200 for information about unhealthy satellite codes.

Chan:
Channel number. Each channel is capable of tracking the L1 and L2 signsls from a single satellite.

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