电离层残差辅助北斗三频伪距载波相位组合周跳探测

发布时间：2018-03-26 15:24

本文选题：北斗三频　切入点：伪距相位组合法　出处：《大地测量与地球动力学》2017年10期

【摘要】：提出一种基于单差模型的电离层残差辅助伪距相位组合周跳探测方法。基于北斗三频实测数据,以波长、电离层延迟系数与噪声为约束条件,优化选取3个线性无关的超宽巷(EWL)、宽巷(WL)组合(0,-1,1)、(1,4,-5)、(4,-2,-3),并利用伪距相位组合法进行周跳的探测与修复。实验结果表明,这3个组合甚至可以实时探测出原始频点上1周的小周跳。针对三频伪距相位组合周跳探测法可能出现的误探情况,提出利用电离层残差法辅助三频伪距相位组合周跳探测的方法,即首先利用原始观测量求出历元间电离层残差,再将相邻历元间所求的历元间电离层残差二次作差。实验表明,该方法可以实时准确地探测与修复不同基线下单差的各类大小周跳。
[Abstract]:A method of ionospheric residual aided pseudo-range phase combined cycle slip detection based on single difference model is proposed. Based on the measured data of Beidou three frequency, the wavelength, ionospheric delay coefficient and noise are taken as constraints. Three linear independent super-wide roadways, EWL and WL, were optimized for detecting and repairing cycle slips by using pseudo-range phase combination method. These three combinations can even detect the small cycle slip of one week on the original frequency point in real time. In this paper, the ionospheric residuals method is proposed to assist the tri-frequency pseudo-range phase combined cycle slip detection. Firstly, the ionospheric residuals of each epoch are calculated by using the original observations, and then the ionospheric residuals between the adjacent epochs are used in the second order. The experimental results show that, This method can accurately detect and repair all kinds of cycle slips with different baselines.
【作者单位】：信息工程大学地理空间信息学院;78125部队;
【基金】：国家自然科学基金(41674016,41274016)~~
【分类号】：P228.4

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