發(fā)布時間：2018-10-13 09:44

【摘要】：衛(wèi)星導(dǎo)航系統(tǒng)中星載原子鐘作為系統(tǒng)的星上時間基準(zhǔn),其性能直接決定著導(dǎo)航定位的精度。北斗衛(wèi)星導(dǎo)航系統(tǒng)(BeiDou navigation satellite system,BDS)目前處于全面建設(shè)階段,對系統(tǒng)星載原子鐘的性能進(jìn)行評估非常重要。結(jié)合評價星載銣原子鐘穩(wěn)定性的哈達(dá)瑪(Hadamard)方差、重疊哈達(dá)瑪方差和哈達(dá)瑪總方差,分別基于5min和15min采樣間隔的北斗精密鐘差數(shù)據(jù),綜合三種方差的計(jì)算結(jié)果對北斗衛(wèi)星導(dǎo)航系統(tǒng)星載原子鐘頻率穩(wěn)定性進(jìn)行較為全面的評估,得到了一些有益的結(jié)論。
[Abstract]:In the satellite navigation system, the on-board atomic clock is used as the onboard time reference of the system, and its performance directly determines the accuracy of navigation and positioning. Beidou Satellite Navigation system (BeiDou navigation satellite system,BDS) is currently in a comprehensive construction stage. It is very important to evaluate the performance of spaceborne atomic clock. Combined with Hadama (Hadamard) variance, overlapping Hadamard variance and total Hadamard variance, the Beidou precision clock difference data based on sampling intervals of 5min and 15min are used to evaluate the stability of space-borne rubidium atomic clock. The stability of space-borne atomic clock frequency of Beidou satellite navigation system is evaluated comprehensively by synthesizing the calculation results of three variances, and some useful conclusions are obtained.
【作者單位】： 信息工程大學(xué)地理空間信息學(xué)院;地理信息工程國家重點(diǎn)實(shí)驗(yàn)室;
【分類號】：TN967.1

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1 劉朝英;屈利忠;趙齊樂;;BDS廣播星歷的實(shí)時異常探測[A];第五屆中國衛(wèi)星導(dǎo)航學(xué)術(shù)年會論文集-S6 北斗/GNSS測試評估技術(shù)[C];2014年

2 羅t，

本文編號：2268151