APPARATUS FOR SYNCHRONIZING TIME BASED ON GLOBAL NAVIGATION SATELLITE SYSTEM AND METHOD THEREOF

摘要

The present invention relates to a time synchronization apparatus and method based on a satellite navigation system, comprising: a wireless satellite for synchronizing an internal oscillator so that a synchronization time signal can be generated by an internal oscillator of a satellite receiver from a wireless satellite signal and a wired network signal. A visual signal extracting unit that extracts a visual signal and a wired network visual signal, respectively, a phase difference detection unit that detects a first phase difference between a synchronous time signal and a wireless satellite time signal, and a second phase difference between the synchronous time signal and the wired network time signal, and a phase difference detection unit A forgery detection unit for detecting time forgery of the wireless satellite signal by an external forgery signal based on the first and second phase difference detected by, and an internal oscillator based on the result of time forgery detection of the wireless satellite signal by the forgery detection unit It characterized in that it comprises a synchronization signal selection unit for selecting a synchronization signal to synchronize.