Investigation of Failures in the Operation of AIS Technology

Abstract

Based on the analysis of messages received by AIS stations No. 4757 and No. 5064, three types of failures in AIS technology were identified: failures of onboard GPS equipment, jumps in vessel coordinates due to the transmission of incorrect pseudo range corrections by VTS, faulty AIS messages caused by a random match of the CRC code. Recommendations are given to eliminate the identified failures and improve the safety of navigation.