本文選題：GNSS　切入點：連續(xù)性　出處：《導航定位學報》2016年01期

【摘要】：連續(xù)性是評估GNSS性能的重要指標之一。針對空間信號層面,提出了GNSS空間信號連續(xù)性的定義,給出了單顆衛(wèi)星空間信號連續(xù)性的統(tǒng)一模型與算法,在此基礎(chǔ)上,利用GNSS廣播星歷和顧及衛(wèi)星中斷數(shù)據(jù)開展了GPS/GLONASS/BDS/Galileo系統(tǒng)的空間信號連續(xù)性計算。結(jié)果表明:剔除計劃中斷后,BDS三類衛(wèi)星GEO/IGSO/MEO空間信號連續(xù)性分別達到0.998 2、0.997 9和0.997。在未剔除計劃中斷情況下,GPS空間信號連續(xù)性優(yōu)于0.999 8,GLONASS空間信號連續(xù)性優(yōu)于0.999 7,Galileo系統(tǒng)空間信號連續(xù)性優(yōu)于0.997。BDS和GPS衛(wèi)星達到了各自系統(tǒng)制定的空間信號連續(xù)性標準。
[Abstract]:Continuity is one of the important indexes to evaluate the performance of GNSS.According to the spatial signal level, the definition of GNSS spatial signal continuity is proposed, and the unified model and algorithm of single satellite spatial signal continuity are given.GNSS broadcast ephemeris and satellite interrupt data are used to calculate the spatial signal continuity of GPS/GLONASS/BDS/Galileo system.The results show that the continuity of GEO/IGSO/MEO space signals of three kinds of satellites is 0.998 ~ 0.997 9 and 0.997 respectively after the interruption of the plan.The continuity of GPS spatial signal is better than that of 0.999 7 0.997.BDS and GPS satellites, and the continuity of spatial signal is better than that of 0.999 8 GLONASS without eliminating the planned interruption. The continuity of the spatial signal is better than that of the 0.997.BDS and GPS satellites, which meet the standards of spatial signal continuity established by their respective systems.
【作者單位】： 解放軍信息工程大學導航與空天目標工程學院;西安測繪研究所;
【分類號】：P228.4

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本文編號：1706417