GNSS Interference Monitoring Network Based on Detection in Automotive ITS Station Receivers

Satellite navigation signals have interference protection to some degree due to their code structure. However, since signals transmitted from satellites reach the receiver antenna with a very low signal power, buried in noise, they are vulnerable to interference. Interference sources like in-car jammers block the navigation signal reception in their vicinity and degrade positioning performance, proportional to the distance, over a wide area. As novel and innovative transport systems rely on a precise and reliable position determination, the threat of interference should not be underestimated. The work presented in this paper analyses the interference caused by malicious use of in-car jammers and proposes an enhancement of automotive receivers in a way that interference can be detected and reported. Together with roadside interference detectors at designated locations it is envisaged to prosecute illegal jamming attempts.