Satellites - General Information
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This page shows overview information about the satellites being tracked
and the overall GPS constellation. This information is updated every
five seconds.
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Tracking 9 Satellites:
Shows the total count and lists the PRN numbers of the satellites
currently being tracked. This list includes GPS, WAAS and EGNOS
satellites.
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Total GPS Constellation:
Shows how many GPS satellites are currently in orbit.
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Healthy GPS Satellites:
Shows which GPS satellites are currently thought to be healthy, that is,
fully operational. This information comes from the most recent data
transmitted in satellite almanacs.
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Unhealthy GPS Satellites:
Shows which GPS satellites are currently thought to be
unhealthy. Typically, unhealthy satellites will not be
tracked, measured, or used in position calculations.
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User Disabled GPS Satellites:
Shows which satellites, if any, have been intentionally disabled by the
user.
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User Ignore Health GPS Satellites:
Shows which satellites, if any, the user has indicated should be used
even if they are indicating an unhealthy status. This mode of operation
is not recommended. The use of measurements from satellites that are
truly unhealthy can degrade the performance of GPS positioning.
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User Enabled WAAS/EGNOS Satellites:
Shows which WAAS/EGNOS satellites, if any, are enabled for use.
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