基于自適應卡爾曼濾波的GPS精密單點定位研究
[Abstract]:Precise single point positioning is a high-precision absolute positioning method which uses the high-precision orbit and clock difference data provided by IGS and so on, and uses the dual-frequency pseudo-range and carrier phase observations collected by a single GNSS receiver. Kalman filter is widely used in precise single point positioning. There are some difficulties and limitations in the calculation of precise single point positioning. Firstly, the method of cycle slip detection is limited by the type of observation, and the data preprocessing is difficult. Second, a large number of measurement errors need to be considered and then eliminated or weakened. Third, the difficulty of fixing the integer ambiguity leads to the slow convergence speed and the influence of positioning accuracy. Fourth, the real-time precision track and clock error file is difficult to guarantee. At the same time, Kalman filter also has some limitations: the noise of moving model may not be accurately simulated or the measurement noise is not normal distribution in dynamic precise single point positioning. Therefore, the accuracy of dynamic solution using Kalman filter may be affected. In this paper, the classical mode of precision single point positioning is used to reduce or eliminate the error in precision single point positioning, and TurboEdit is used to detect cycle slips in data preprocessing, and the effects of clock slips and GPS hardware delays are taken into account. Lagrangian interpolation is used to encrypt the precision orbit and clock error data, and two improved adaptive Kalman filtering and robust Kalman filtering algorithms are added to the precision single point positioning. In this paper, two kinds of adaptive Kalman filter are compared with standard Kalman filter, and the influence of state anomaly and observation anomaly on location calculation is analyzed.
【學位授予單位】:西南交通大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:P228.4
【參考文獻】
相關期刊論文 前7條
1 王振杰;聶志喜;歐吉坤;;一種基于TurboEdit改進的GPS雙頻觀測值周跳探測方法[J];武漢大學學報(信息科學版);2014年09期
2 楊元喜;任夏;許艷;;自適應抗差濾波理論及應用的主要進展[J];導航定位學報;2013年01期
3 劉寧;熊永良;徐韶光;;利用改進的TurboEdit算法與Chebyshev多項式探測與修復周跳[J];武漢大學學報(信息科學版);2011年12期
4 宋小勇;楊志強;焦文海;毛悅;馮來平;;GPS接收機碼間偏差(DCB)的確定[J];大地測量與地球動力學;2009年01期
5 張雙成;楊元喜;張勤;高為廣;;一種基于Bancroft算法的GPS動態(tài)抗差自適應濾波[J];武漢大學學報(信息科學版);2007年04期
6 楊元喜,何海波,徐天河;論動態(tài)自適應濾波[J];測繪學報;2001年04期
7 楊元喜;動態(tài)系統(tǒng)的抗差Kaliman濾波[J];解放軍測繪學院學報;1997年02期
相關博士學位論文 前2條
1 徐韶光;利用GNSS獲取動態(tài)可降水量的理論與方法研究[D];西南交通大學;2014年
2 聶建亮;GPS精密單點定位算法及故障診斷研究[D];長安大學;2010年
相關碩士學位論文 前2條
1 陳文典;基于CORS網(wǎng)絡的精密單點定位研究[D];西南交通大學;2014年
2 祁芳;卡爾曼濾波算法在GPS非差相位精密單點定位中的應用研究[D];武漢大學;2003年
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