evaluating GPS performance is more than looking at the P/H/DOP values and the number of satellites.
the UBX messages in the log file contains information such as:
I would like to start a discussion about how to interpret these values - to be sure the GPS is healthy.
From the "u-blox M8 Receiver Description" we learn that:
- the jamInd is the CW Jamming indicator and that it is scaled from 0 to 255 where 0= no CW jamming, 255 = strong CW jamming),
- the noiseperms is the noise Level as measured by the GPS Core,
- and that the agcCnt is the Automatic Gain Control (AGC) Monitor (counts SIGHI xor SIGLO) and ranges from 0 to 8191.