[DG] [DG11] Quantum 2 doppler

[Derek - Raymarine - Moderator]

Hi bobdsg
Thank you for your enquiry

Doppler and Marpa Require a fast update rate of heading in order to correctly process and track targets. More information about the effect of heading can be found here .

The poor performance of Doppler and Marpa without good quality heading will be especially noticeable in rough wetaher or when the vessel is turning at higher speeds.

Regards

Derek