AF 447 Search to resume (part2)

[infrequentflyer789]

Originally Posted by Machinbird

RR_NDB
I believe the technique you are referring to is a phase lock loop system.
Phase-locked loop - Wikipedia, the free encyclopedia
Real electronic black magic. No doubt the EE folk will have more to say.

Real EE black magic = kalman filters (especially when extended). PLL is the simple case.

Once I thought I got all the math and completely understood how they worked, whilst the elders advised just treating it as black magic... now, I am older and wiser and know how little I knew