Satellite communications company Inmarsat has written a "clear language" analysis in the Royal Institute of Navigation's peer-reviewed journal on the high-tech detective work that went into establishing the current search area for Malaysian Airlines Flight MH370. The Boeing 777 disappeared in early March on a flight from Kuala Lumpur to Beijing and as new information became available the search areas shifted from an area off the coast of Vietnam to the southern Indian Ocean. A major reason for that shift was data crunched by Inmarsat that tracked a breadcrumb trail of satellite signal returns and pointed to a long flight across one of the most remote stretches of ocean in the world.
This is a companion discussion topic for the original entry at https://www.avweb.com/news/mh370-satellite-analysis-paper-released