Originally Posted by manimaul
I'd like to get user's opinion on track recording. MX Mariner currently records a track point per 200 meters traveled and/or course changes greater than 50 degrees per 50 meters (this eliminates arbitrary track points during GPS
dither at stand still).
This means there will be roughly 1000 track points per 100 nautical miles of track.
I find this to produce better results than recording tracks at a pure time or distance interval. Any opinions out there?
In response to your above question about tracking points, just an opinion:
For most sailing, I would be satisfied with 10 track points per nm.
Sounds like an essential requirement to avoid arbitrary track points due to GPS dither.
There may be certain situations in which closer spaced track points are desirable (eg. back-tracking from a reef entry, or pursuing a man overboard
at night), but it would be of little value if GPS error made them unreliable.
If the size of GPS error varies by time/location, is there any chance to leave an option for the user to adjust downwards in "good" GPS locations?