About Ping position status
When GPS data are processed, each echosounder ping is assigned a position status based on its temporal relation to nearby GPS fixes. The Ping position status also reflects the quality of the track between good fixes.
Ping Position Status Values
- Good:
- Assigned when a ping is between two consecutive GPS fixes with "good" status.
- Displayed in green.
- Uncertain:
- Assigned when a ping's position is influenced by a GPS fix with "good (uncertain)" status or when the time gap between fixes exceed acceptable limits.
- Displayed in magenta.
- Unknown:
- Assigned when a ping occurs outside the range of available GPS fixes (before the first fix or after the last fix).
- Displayed in gray.
Where to View Ping Position Status
- Echograms: Color-coded visualizations show the position status for each ping.
- Cruisetracks: Pings inherit the status of the nearest non-bad GPS fix and Ping position status is used to indicate cruisetrack quality.
How Ping Position Status is Determined
Echoview assigns ping position statuses based on the next non-bad GPS fix in time. For more details, see Determining Ping Position Status.
See also
Processing GPS data
About GPS fix status
About Cruisetracks
Position status area on Echograms