Originally Posted by
Ian W
A final way to have problems is if the comms system from the radars to the control center is having problems and a simple buffering on overflow is happening. This can result in some PSR positions getting through on time and others sitting in a buffer. The controller sees intermittent position reports for the aircraft then the buffer releases the data being held and the controller suddenly gets old primary responses and the aircraft appears to jump back a few miles then the next response gets through and the aircraft jumps forward several miles and so on.
No direct knowledge this technology but it seems odd from a system design view that absolute (origin) time stamps are not used to allow stale data to be either ignored or used as additional "prior location" data in position prediction filters.