摘要
描述了高精度GPS时间传递进行原子钟频率偏差测定和核准的方法,并介绍了上海天文台氢原子钟频率偏差的测试结果,同时比较了两种不同定时接收机(精密的和轻便的)确定原子钟频率偏差的长期测颇能力。采用合适的数据处理方法,可以减少SA效应的影响,提高长期测频精度2~4倍。精密GPS定时接收机在1~30天内的校频水平为1.5×10-13~1.0×10-14,轻便GPS定时接收机在1~10天内的校频水平为2×10-12~2×10-13。
ThemethodthatfrequencydeviationofatomicclockdeterminedandcalibratedbyGPStimetransferwithhighprecisionwasdescribed,andthetestingresultsforthefrequencydeviationofhydrogenatomicclockatShanghaiAstronomicalObservatorywaspresented,andthemeasuringfrequencyabilityoveralongperiodoftimeintwodifferenttimingreceivers(preciseandportable)tobedeterminedthefrequencydeviationofatomicclockwasalsocompared.Byusingasuitabledataprocessingmethod,itcanbereducetheSAeffects,andimprove2~4timesforthemeasurimgfrequencyabilityoveralongperiodoftime,thelevelfrompreciseGPStimingreceiveris1.5×10-13~1.0×10-14within1~30days,thelevelfromportableGPStimingreceiveris2×10-12~2×10-13within1~10days.
出处
《中国科学院上海天文台年刊》
1999年第20期154-161,共8页
Annals Shanghai Astronomical Observatory Chinese Academy of Sciences