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D Logs summary
158 MiLLennium Command Descriptions Manual
Figure D-1 Example of Navigation Parameters
A = FROM lat-lon
B = TO lat-lon
AB = Great circle line drawn between FROM A lat-lon and TO B lat-lon
AC = Track offset from A to C
BD = Track offset from B to D
CD = Offset track to steer (parallel to AB)
F = Current GPS position
E = Xtrack perpendicular reference point
FD = Current distance and bearing from F to D
EF = Xtrack error from E to F (perpendicular to CD)
FG = Along track from F to G (perpendicular to BD)
AB - True bearing = 70°
AB - Magnetic bearing = True + (MAGVAR correction)
= 70° + (-20)
= 50°