A cycle-slip detection and repair method for dynamic GNSS buoy on the ocean
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摘要: 常规全球卫星导航系统(GNSS)周跳探测方法大多忽略了高度角对多路径误差以及观测噪声的影响.由于海上GNSS浮标的数据质量受海面影响很大,在卫星高度角降低时其观测噪声和多路径误差显著增大,且具有高频周跳特点,常规GNSS周跳探测方法并不适用.据此,提出了一种综合电离层总电子含量变化率(TECR)和顾及高度角加权阈值模型的改进双频码相组合(MW)探测法的周跳探测与修复方法.实验结果表明:该方法能有效抑制低高度角和多路径影响带来的信号噪声,准确探测到各种类型周跳,可有效应用于海上GNSS浮标的数据预处理.Abstract: The data quality of GNSS buoy working in the sea is ususlly influenced by the dynamic sea surface, The measurement noise and multipath error are significantly increased, and cycle occurs more frequently, especially when the satellite is at low elevation. The conventional GNSS cycle slip detection method always neglect the effects of multipath error and observation noises and take no account of error caused by satellite elevation when detecting and repair the the GNSS data. Thus, the conventional GNSS cycle slip detection method is not applicable for GNSS buoy. In this paper, the author proposed a combined cycle-slip detection method based on TECR and an improved M-W measurement that taking into account the satellite elevation angle.The experiment results indicate that the method can significantly reduce error caused by satellite elevation and multipath and can accurately detect and repair all the simulated cycle slips. Thus,It’s an effective method for data preprocessing applied to marine GNSS buoys.
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[1] 陆洋.海洋卫星测高新概念[JP]——GPS浮标[J].海洋技术,2000,19(4):28-34. [2] 余文坤,戴吾蛟,杨哲.基于TEQC的GNSS数据质量分析及预处理软件的设计与实现[J].大地测量与地球动力学,2010,30(5):81-85. [3] 李征航,张小红.卫星导航定位新技术及高精度数据处理方法[M].武汉:武汉大学出版社,2009. [4] BLEWITT G.An automatic editing algorithm for GPS data[J].Geophysical Research Letters,1990,17(3):199202. DOI: 10.1029/GL017i003p00199. [5] 陈品馨,章传银,黄昆学.用相位减伪距法和电离层残差法探测和修复周跳[J].大地测量与地球动力学,2010,30(2):120-124. [6] 王振杰,聂志喜,欧吉坤.一种基于TurboEdit改进的GPS双频观测值周跳探测方法[J].武汉大学学报(信息科学版),2014,39(9):1017-1021. [7] 张顺,姚宜斌,陈鹏,等.GPS非差数据周跳探测方法研究[J].大地测量与地球动力学,2012,32(1):101-104. [8] 邹正标,何秀凤,唐旭.GPS非差数据周跳探测的TECR-MW综合法[J].河海大学学报(自然科学版),2014,42(2):155-158. [9] LIU Z Z.A new automated cycle slip detection and repair method for a single dual-frequency GPS receiver[J].Journal of geodesy,2011,85(3):171-183. [10] 苗赢,孙兆伟.星载GPS测量数据周跳探测方法研究[J].宇航学报,2009,30(2):521-525,596. [11] 袁玉斌,党亚民,成英燕,等.非差相位数据预处理的TurboEdit算法及其改进[J].大地测量与地球动力学,2009,29(3):109-113. [12] 方荣新,施闯,魏娜,等.GPS数据质量控制中实时周跳探测研究[J].武汉大学学报(信息科学版),2009,34(9):1094-1097.
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