Question for somebody that knows!
The location deductions by the sattelites is assumend to be from differential power levels. This would seem to have a extremely large error factor. Could the logs just be time tagged when the ping was recieved.
Sort of like a reverse gps. Another words sattelite 1 gets it at time x, and sattelite 2 gets it at x.000002 seconds later. This to would give a north south area of interest. I presume each sattelite has known time on board.