Determining the radiant of a meteor using Graves radar

Important
This article has been superseded by this one: http://ea4eoz.blogspot.com/2016/04/determining-radiant-of-meteor-using.html

During the last months of 2014, Iban EB3FRN and me were recording meteor head echoes using Graves. But to make things interesting, we synchronized the recordings using a PPS GPS signal. The idea was to analyze the Doppler from the head echoes and and see if something useful can be extracted from them.

Typical Graves' head echo followed by a large tail echo