一种BDS广播星历异常值实时探测方法

针对BDS广播星历提出一种实时异常探测方法。首先通过检查广播星历参数是否超限来判断异常广播星历；然后计算相邻历元广播星历在中间时刻的空间信号测距差SISRD，基于广播星历的一致性进行异常值探测；最后对ALIC、AREG、ABMF、GENO测站的BDS广播星历数据进行异常探测，以最终精密星历探测结果作为参考进行验证。结果表明，该方法能够准确地探测出异常广播星历。

A Real-Time Anomaly Detection Method for BDS Broadcast Ephemeris

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.