Wednesday, March 26, 2014

Malaysian government publishes MH370 details from UK AAIB (click here)

Malaysia’s Ministry of Transport has published an article detailing how Inmarsat helped to pinpoint the southern corridor flight path taken by MH370.

It reports that Inmarsat informed them on 13 March that routine automatic communications between the Inmarsat satellite and MH370 could be used to determine several possible flight paths.

The UK Air Accidents Investigation Branch (AAIB) then presented Inmarsat’s most recent findings on 24 March, indicating the southern corridor.

Refined analysis from Inmarsat (click here)
 
In recent days Inmarsat developed a second innovative technique which considers the velocity of the aircraft relative to the satellite. Depending on this relative movement, the frequency received and transmitted will differ from its normal value, in much the same way that the sound of passing car changes as it approaches and psses by. This is called the Doppler effect. The Inmarsat technique analyses the difference between the frequency that the ground station expects to receive and that actually measured. This difference is the result of the Doppler effect and is known as the Burst Frequency Offset....