摘要
利用卫星钟相位差的自监测信息进行在轨导航卫星星钟长稳性能估计的方法实现简单,能满足实际评估需要。由此开发了相应的软件。该软件读取地面接收机解调的卫星自监测信息,通过软件操作完成卫星钟各观察时段主备钟相位差计算,然后通过分析实现卫星钟长稳特性评估。软件具有卫星主备钟监测相位计满程刻度的修正功能和野值剔除功能,能修正由于各卫星钟实际频率与标称频率差异带来的相差计算误差,剔除小概率频率突变值,降低长稳特性评估的误差。软件界面友好,操作简单,在导航卫星在轨测试和在轨管理中得到应用。
The method of estimating long-term stability performance of on-board satellites clock using autonomous monitoring information of satellite's phase difference for in-orbit navigation satellites is simple in implementation and can meet the requirement of actual assessment. Therefore the corresponding software has been developed. The software reads the self-monitoring information demodulated by ground receivers,completes the calculation of phase difference between master and slave clocks of satellite clock in each observation time period through software operation,and then realises the evaluation of long-term stability performance of satellite clock by analyses. The software has full scale correction function and outliers elimination function for phase meters of master and slave satellite clocks' monitoring,which can correct the calculation errors of phase differences brought about by the differences between actual frequency of each satellite clock and nominal frequency,and weed out mutated value of small probability frequency,as well as reduce the error of long-term stability performanceassessment. The software is friendly in interface,easy to operate,and has been applied in in-orbit testing and management of navigation satellites.
出处
《计算机应用与软件》
CSCD
2015年第3期1-3,26,共4页
Computer Applications and Software
基金
国家重大科技专项(GFZX0301020106)
关键词
导航卫星
卫星钟
在轨
频率稳定度
评估
Navigation satellite Satellite clock In-orbit Frequency stability Evaluation