A System Time Synchronization Method under Mixed Channel Communication Conditions

Abstract

The invention discloses a system time synchronization method under mixed channel communication conditions, comprising: designing the message format of the time synchronization message; requesting the end system to initialize the message, setting the first time ST1 in the message, and selecting the communication link After receiving the message, the receiving system will set the characteristic value of the communication link according to the communication link, and set the second moment ST2 in the message; according to the communication link The characteristic value selects the communication link, sets the third moment ST3 in the message, and sends it to the requesting end system through the communication link; the requesting end system receives the message, and sets the fourth moment ST4 in the time synchronization message; according to the message Calculate the system time difference at the four moments in the system, and correct the system time of the requesting system. Using the aforementioned method can achieve time synchronization between systems, solve the problem that the system time is difficult to synchronize with high precision under mixed channel communication conditions, and improve the accuracy of the command information system.

Description

technical field [0001] The invention relates to the technical field of command information systems, in particular to a system time synchronization method under mixed channel communication conditions. Background technique [0002] In command information systems, system time and astronomical time are often used simultaneously. Wherein, the astronomical time is the actual time course, specifically, it may be the time displayed by the wall clock. The system time is not the actual time process. Specifically, it can be a time standard set by the highest-level system in the command information system for the global interconnection system, which can be set and adjusted according to tasks or plans. In addition, unlike in the simulation training and simulation system, the adjustment of time includes the pause, continuation and adjustment of the time step. In the command information system, the adjustment of time is limited to the setting of the time value. [0003] Because the essen...

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Problems solved by technology

[0005] The present invention provides a system time synchronization method under mixed channel communication conditions to solve the problem that most of the existing time synchronization methods are adjustments to astronomical time, and it is difficult to realize high-precision time synchronization for command information systems under mixed channel communication conditions The problem

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