Raytheon Company

George Vachula

Mu-Cheng Wang

Gregary B Prince

John P Pehowich

Gurpartap Takhar

Mario Damico

A method for synchronizing a time reference of a terminal clock of a terminal transceiver including an antenna and a modem, the method including: transmitting, by the modem, a terminal sync hop to a signal relay in accordance with the time reference; searching, by the modem, for a terminal sync hop return from the signal relay near an estimated terminal sync hop receive time; receiving, by the modem, the terminal sync hop return at a terminal sync hop receive time; searching, by the modem, for a master sync hop return from the signal relay; receiving, by the modem, the master sync hop return at a master sync hop receive time; calculating, by the modem, a time difference between the master sync hop receive time and the terminal sync hop receive time; and adjusting, by the modem, the time reference based on the calculated time difference.

Synchronous waveform clock synchronization without a system controller

In one aspect, a method to discover and prevent a communications disruption in a mobile environment includes receiving data at a mobile platform from a geographical database, determining if the mobile platform will be blocked by a blockage event from accessing a network in response to data extracted from the geographical database and avoiding the blockage event if the mobile platform will be blocked from accessing the network.

Growing community of inventors

Harvard, MA, United States of America

George Vachula