Study of GNSS CV Data Transmission Method Based on Redundant Communication Network

This paper proposed a GNSS common-view data transmission method based on the redundant communication of optical Ethernet and 4G mobile communication network. The method enables automatic, continuous, and reliable transmission of data and is more reliable than any of the singular mode of optical Ethernet or 4G mobile communication networks. With the method, the data transmission error rate has been reduced by half, and the reliability has reached more than 98%. With the improvement of reliability of GNSS common-view data transmission, the precision and frequency stability of GNSS common-view time comparison are significantly improved.