Really compass bearing ? Or ground track direction ? Pedantic I know, but they are different. I suspect in this application ground track bearing (indicating approximate direction of travel) rather than compass bearing (indicating the azimuth of the axis of the compass sensor relative to magnetic north, or which way the unit is 'facing',if you prefer) would be more useful.
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Compass bearing of travel ? Pedant alert.
Really compass bearing ? Or ground track direction ? Pedantic I know, but they are different. I suspect in this application ground track bearing (indicating approximate direction of travel) rather than compass bearing (indicating the azimuth of the axis of the compass sensor relative to magnetic north, or which way the unit is 'facing',if you prefer) would be more useful.