I have a question about the principles that stand behind the vor/loc/gs indication provided by some GPS systems. Also, I want to learn more about the GPS approach methods...
What I need to know is how indication gets to the vor/loc/gs indicator...
That's general !
More specific, it's about the Garmin 500 with the Garmin GI-106A VOR/LOC/GS/GPS Course Deviation Indicator (CDI). First, I thought that this indication is coming as a parallel indication from the VOR/ILS receiver (KURS MP 2), but it's not.
I think (but it's more a guess and I didn't find any documentation at the first research) that the GPS being all about the positions, it could compute an ideal landing track, knowing of course the position of the runway (at least two points of interest).
About the precision, I personally think you cannot compare this kind of indication with the one provided by a classic VOR/ILS receiver.
What I need to know is how indication gets to the vor/loc/gs indicator...
That's general !
More specific, it's about the Garmin 500 with the Garmin GI-106A VOR/LOC/GS/GPS Course Deviation Indicator (CDI). First, I thought that this indication is coming as a parallel indication from the VOR/ILS receiver (KURS MP 2), but it's not.
I think (but it's more a guess and I didn't find any documentation at the first research) that the GPS being all about the positions, it could compute an ideal landing track, knowing of course the position of the runway (at least two points of interest).
About the precision, I personally think you cannot compare this kind of indication with the one provided by a classic VOR/ILS receiver.