Logged ping, base carrier frequency 1375.003762 MHz.
Logged ping, base carrier frequency 1375.003761 MHz.
Logged ping, base carrier frequency 1375.002961 MHz.
Then with some maths and comparing to the known positions of the plane (pre-contact loss) and known positions of the satellite you can work out which way the plane would have had to move to get the observed results once contact was lost.
(numbers in example made up, and likely aren't appropriate for satellite communications but you get the idea)
Well sure, but I don't know if doppler information between pings buys you much new info.
The pings, as I understand it, came an hour apart, and continued for 7-8 hours total. With just the pings themselves they were able to extract the distance from the sat, which is what led to those arcs they published last week. I dunno if doppler shifts from pings an hour apart add much to that.
Conservatively there are tens of thousands of commercial flights per day. They could use each flight as a test case to understand and refine the model of the original analysis and come up with something more accurate.
Logged ping, base carrier frequency 1375.003762 MHz.
Logged ping, base carrier frequency 1375.003761 MHz.
Logged ping, base carrier frequency 1375.002961 MHz.
Then with some maths and comparing to the known positions of the plane (pre-contact loss) and known positions of the satellite you can work out which way the plane would have had to move to get the observed results once contact was lost.
(numbers in example made up, and likely aren't appropriate for satellite communications but you get the idea)