Originally Posted by
mm43
The graphic below is using an equidistant projection, and has a 40° and 50° satellite elevation arc drawn on it. The red tracks represent the two speeds used by the NTSB and an assumption is made that about 200+NM west of Aceh, North Sumatra, the heading was set to 180°M.
Thanks for that mm43, gives an idea of where the intermediate satellite pings probably fell.
By the way, I believe the correct projection to use would be an azimuthal equidistant projection, centered on the Inmarsat IOR satellite. (
Azimuthal equidistant projection - Wikipedia, the free encyclopedia)