Abstract:We propose a real-time anomaly detection method for BDS broadcast ephemeris. First, by checking whether the broadcast ephemeris parameters are exceeded, we judge the anomalous broadcast ephemeris. Second, to realize the consistency-based real-time anomaly detection of the broadcast ephemeris, we calculate the SISRD of broadcast ephemeris of continuous epochs at intermediate time. Finally, we carry out the anomaly detection with BDS broadcast ephemeris data of the ALIC, AREG, ABMF and GENO station, and use the anomaly results detected by the final precision ephemeris as a reference for verification. The results show that the proposed method accurately detects the anomalies of broadcast ephemeris.