Doppler signature
Re: 9679
Agreed. Doppler signatures were used for ELT locating by satellite before GPS's were integrated with ELT's. The relative doppler shift is a tenth of the under water case.
The lower duty cycle ping pulse will make it challenging. A fellow on the Reddit MH370 group used matlab to find a 0.4 millisec slowing down during a playback of 20 seconds of pings from a news broadcast. Lets put Inmarsat on the case.
Last edited by Rollleft; 9th Apr 2014 at 15:20.