GPS Lock

This panel shows a symbol that has two states.

0./ Space: no GPS

1./ star: Means GPS has no lock (APM does not have valid GPS coordinates)

1./ Flat radar: Means GPS has 2d lock (APM has valid GPS coordinates)

2./ 3d radar: Means GPS has 3d lock (APM has valid GPS coordinates and altitude)

if HDOP greater than 200 then GPS icon will blink

This panel has a warning assigned

If warnings are enabled, and there is no GPS fix than a warning message is shown.