| STPIR和MW组合的北斗三频周跳探测与修复 |
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| 引用本文： | 李迪,柴洪洲,潘宗鹏.STPIR和MW组合的北斗三频周跳探测与修复[J].海洋测绘,2018(1):31-34. |
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| 作者姓名： | 李迪 柴洪洲 潘宗鹏 |
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| 作者单位： | 解放军信息工程大学地理空间信息学院; |
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| 基金项目： | 国家自然科学基金(41274045,41574010,41604013) |
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| 摘 要： | 针对载波相位观测值中出现周跳的问题及北斗卫星导航系统全星座播发三频信号的现状,提出一种三频相位电离层残差二阶历元差分(STPIR)的算法,克服了传统电离层残差法受观测数据采样间隔影响较大的问题,联合MW组合观测量进行周跳探测又可避免各自的探测盲区。两种组合观测量均很好地削弱了电离层延迟项的影响,联立方程组进行周跳求解时,直接取整即可得到周跳值。通过北斗三频实测数据验证,提出的组合方法在观测数据采样间隔较大时,可以准确探测出所有周跳,并有效修复。
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| 关 键 词： | 北斗三频 周跳探测与修复 电离层残差 二阶差分 MW组合 |
A Combination of STPIR and MW for BDS Triple-frequency Cycle Slip Detection and Repair |
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| LI Di,CHAI Hongzhou,PAN Zongpeng.A Combination of STPIR and MW for BDS Triple-frequency Cycle Slip Detection and Repair[J].Hydrographic Surveying and Charting,2018(1):31-34. |
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| Authors: | LI Di CHAI Hongzhou PAN Zongpeng |
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| Institution: | School of Surveying and Mapping,Information Engineering University,Zhengzhou 450001 ,China |
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| Abstract: | Focusing on the problem of cycle slips occurred in phase observation and the situation of triple-frequency signal broadcasted by BDS,the triple-frequency second-order time-difference phase ionosphere residual (STPIR) algorithm is introduced.The algorithm is not influenced by the observation interval.Blind spots can be avoided with the use of combining with MW for cycle slip detecting and repairing.Both of them attenuate the effect of ionospheric delay.Cycle slips can be decided directly with float value rounding to the nearest integer and the effect of ionospheric delay is attenuated by both combined observations.BDS triple-frequency data has been used to validate the algorithm,and the experimental result indicates that the method proposed in this paper can effectively detect and repair all cycle-slip even in the large observation interval. |
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