北斗卫星导航系统RNSS授时监测方法研究

Research on RNSS timing monitoring method of Beidou satellite navigation system

随着北斗导航卫星系统的不断完善以及在授时方面的普及,对RNSS授时监测提出了更高的要求。针对数据质量的监测,该文通过对导航星历完备性、观测数据粗差剔除等常规手段进行监测,并首次引入测站接收机钟跳探测,保证数据的质量。针对授时结果的监测,通过设立阈值对授时结果进行监测,并针对授时结果阈值法的不足提出了基于相邻历元的授时结果监测法,通过数据监测与授时结果监测相结合形成了完整的授时监测体系,保证了授时结果的可靠性。根据本文的监测体系,选取了多个iGMAS站进行了实验,对该监测体系进行了测试,验证了该监测体系的正确性与有效性。

With the continuous improvement of the Beidou navigation satellite system and the popularity of timing,the RNSS timing monitoring has also put forward higher requirements.For the monitoring of data quality,this paper firstly monitors the completeness of navigation ephemeris and the gross error of observation data,and introduces the clock jitter detection of the station receiver for the first time to ensure the integrity of the data.For the monitoring of the timing results,the threshold is used to monitor the timing results,and the timing results comparison method is proposed for the shortage of the timing results threshold method.The data monitoring and the timing monitoring are combined to form a complete timing monitoring system,which ensures the The reliability of the timing results.According to the monitoring system of this paper,several iGMAS stations were selected for experiments,and the monitoring system was tested to verify the correctness and effectiveness of the monitoring system.