GPS lock documentation

Hi all,

I am trying to figure out what the different GPS lock statuses mean. Looking at a file I found in the QGroundcontrol repository I know that the following GPS locks are possible:

  • None,
  • 2D Lock,
  • 3D Lock,
  • 3D DGPS Lock,
  • 3D RTK GPS Lock (float),
  • 3D RTK GPS Lock (fixed),
  • Static (fixed)

Also as noted in this blog post, RTK fix is “the real deal”, and should be the goal. However, still I would like to know what exactly the other modes mean, and when and why QGroundcontrol chooses other GPS lock modes. Also I am very interested into the accuracy of each GPS lock mode.

Is there anyone in possession of documentation on this matter?

Thank you,

Tijmen