多项式拟合法在周跳探测中的研究与改进

发布时间：2018-03-17 06:32

本文选题：北斗卫星定位系统　切入点：周跳探测　出处：《电子测量与仪器学报》2017年11期 　论文类型：期刊论文

【摘要】：针对北斗卫星定位系统(BDS)在载波相位观测中出现的周跳问题,建立改进的多项式拟合模型对载波相位观测中产生的周跳进行探测与修复。该方法采用3个接收机测得与同一颗卫星间的载波相位观测值,同时结合接收机与卫星间的载波相位测出两组单差值,利用一组单差值进行的多项式拟合可获得产生周跳的历元数,结合另一组单差值的多项式拟合可确定哪组载波相位发生周跳,最后对周跳进行修复。通过实验仿真发现,该方法不仅可以测得0.2以上的周跳,也可以测出0.2以上的周跳发生在哪组载波相关观测值中。
[Abstract]:Aiming at the cycle slip problem in carrier phase observation of Beidou Satellite Positioning system (BDS), An improved polynomial fitting model is established to detect and repair the cycle slips generated in carrier phase observation. The carrier phase observations between the same satellite and three receivers are obtained by using this method. At the same time, combining the carrier phase between the receiver and the satellite, two groups of single difference values are obtained, and the number of epochs that generate the cycle slip can be obtained by polynomial fitting with one set of single difference values. Combined with polynomial fitting of another group of single difference values, the cycle slip of carrier phase can be determined, and the cycle slip can be repaired at last. The experimental simulation shows that the method can not only measure the cycle slip above 0.2, It is also possible to determine the group of carrier correlation observations in which the cycle slip above 0.2 occurs.
【作者单位】：安徽四创电子股份有限公司;安徽省机电排灌总站;合肥工业大学电气与自动化工程学院;
【基金】：合肥市北斗卫星导航重大应用示范资助项目
【分类号】：P228.4

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