公开(公告)号：US3568186A

公开(公告)日：1971-03-02

申请号：US3568186D

申请日：1968-12-03

Applicant: BENDIX CORP

Inventor： SHEAR WAYNE G ,  OLMSTEAD MERLIN E ,  EVERETT SAMUEL ROGER

IPC: G01S11/08 ,  G01S19/14 ,  G01S19/49 ,  G08G5/04 ,  G01S9/56

CPC classification number: G01S11/08

Abstract: Apparatus for synchronizing clocks within a cooperative collision avoidance network wherein an aircraft after operating in an isolated environment for a predetermined time sets its clock in a standby position and listens for start of epoch signals. Upon hearing a start of epoch signal the aircraft immediately starts its clock and begins counting epochs and the time slots contained therein. During own time slot, as determined by its clock, the aircraft transmits a clock synchronization request. If no synchronization responses are received the aircraft will automatically advance its clock by a predetermined amount and once again transmit a synchronization request during its next time slot. If a synchronization response is now received the aircraft will synchronize its clock taking into account the amount of time by which its clock had to be advanced in order to receive the synchronization response. If no response is received the aircraft automatically returns its clock to the standby condition.

公开(公告)号：US3493968A

公开(公告)日：1970-02-03

申请号：US3493968D

申请日：1968-06-26

Applicant: BENDIX CORP

Inventor： SHEAR WAYNE G ,  EVERETT SAMUEL ROGER

IPC: G01S13/78 ,  G01S9/56

CPC classification number: G01S13/78