Abstract
The Advanced Radio Frequency Interference (RFI) Detection Analysis and Alerting System (ARFIDAAS) projects focus on providing Global Navigation Satellite System (GNSS) users and GNSS-based service providers with low latency notifications of the detection of Radio Frequency Interference (RFI) impacting their receiving equipment while also building a centralized database of activity from multiple sites for subsequent analysis and reporting. With some stations operating continuously since 2019, more than twenty terabytes of captured spectrum and generated analyses of GNSS RFI events have been collected. Within this paper the design and deployment of the system are presented along with discussions of information gathered during full-year monitoring periods from five selected stations within Scandinavia and Europe.