Improving the inmarsat data.
To improve the precision of the inmarsat data two things could be done:
1. Hand the data over to some radio astronomers. Their toolset for dealing with signals is outstanding.
2. Fly a calibration flight. Charter a long range bizjet with the same class of sat terminal fitted. Communicate over the bird throughout the flight down the calculated MH370 path. Capture this data and process it. Refine the MH370 calcs based on this.