> One idea I had was to base the error not on an angle from the radial but on > the distance from the center of the cone. The required response to correct > this value would be consistant all the way down the cone.
I agree, cross-track error is the way to go. cross_track_error = distance_to_station * sin( radial_error ) , where distance_to_station is horizontal range (not DME). Dave -- **************************** David Culp davidculp2[at]comcast.net **************************** _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel