FMS-3000 Theory of Operation
I'm trying to figure out how this FMS works. I know it gets GPS and DME/DME information to compute a navigation solution. It can also use VOR/DME if there aren't any DME/DME signals available. The question is "Does the FMS use the GPS and DME information at the same time, constantly comparing the signals for the best solution or does it use only the GPS signal and when the GPS reliability falls below a certain threshold revert to DME/DME for the solution?
Thanks in advance for the help!