›› 2017, Vol. 37 ›› Issue (1): 104-110.doi: 10.16708/j.cnki.1000-758X.2017.0019

• 技术交流 • 上一篇    下一篇

北斗三频相位观测值线性组合研究

颜怀成,韩保民*,张家新   

  1. 山东理工大学建筑工程学院,淄博255049
  • 收稿日期:2016-06-28 修回日期:2016-12-08 出版日期:2017-02-25 发布日期:2017-01-24
  • 作者简介:颜怀成(1992-),男,硕士研究生,1731768556@qq.com,研究方向为GNSS精密定位 *通讯作者:韩保民(1969-),男,教授,hanbm@sdut.edu.cn,研究方向为GPS精密定位、低轨卫星精密定轨等
  • 基金资助:

    国家自然科学基金资助项目(41074001)

Researchontriplefrequencycarrier-phaseobservationlinearcombinationofBeiDousatellitenavigationsystem

 YAN  Huai-Cheng, HAN  Bao-Min*, ZHANG  Jia-Xin   

  1. SchoolofArchitectureandEngineering,ShandongUniversityofTechnology,Zibo255049,China
  • Received:2016-06-28 Revised:2016-12-08 Online:2017-02-25 Published:2017-01-24

摘要: 以北斗三频数据为基础,给出了北斗三频组合观测值的数学模型并系统分析了组合后的波长、电离层误差以及观测噪声误差;在保持整周模糊度整数特性的前提下,以整数线性变换法为基础,通过Matlab编程实现组合系数的优化选取。通过将不同组合系数应用于伪距相位法三频数据周跳探测中,发现组合系数之和不为0的组合周跳探测值均在0.5周以上,且组合系数之和越大,波动越大;通过将不同组合系数应用于无几何CIR法三频数据模糊度解算中,发现系数之和不为0,但波长较长的组合求得的模糊度残差值大致在0.6周,通过合适的模糊度搜索方法可以得到正确的模糊度固定解,在短基线模糊度解算中可以考虑使用。

关键词: 北斗, 三频数据, 线性组合, 整数线性变换, 优化选取

Abstract: ThemathematicalmodelofBeiDoutriple-frequencycarrier-phaselinearcombinationwasgivenbasedonBeiDousatellitenavigationsystemtriple-frequencydata,andthewavelength,ionosphericerrorandtheobservationnoiseoflinearcombinationwereanalyzedsystemmatically.Intermsofambiguityintegerpropertiesandusedtheintegerlineartransformationmethodasabasis,theoptimizationofthecombinationcoefficientwasrealizedbyMatlab.Byapplyingdifferentcombinationcoefficientstothecycle-slipdetectionbasedoncode-phase,itshowsthatthecombinedcycleslipdetectionwiththesumofthecombinationcoefficientsbeingnot0,ismorethan05weeks,andthelargerthesumofthecombinationcoefficientsis,thegreaterthefluctuationis.ByapplyingdifferentcombinationcoefficientstotheambiguityresolutionbasedonGF-CIRfortriplefrequencyobservations,itshowsthattheresidualvalueofambiguityobtainedbythecombinationofnon-zerocoefficientsbutlongwavelengthsareabout06weeks.Thecorrectambiguityfixedsolutioncanbeobtainedbytheappropriateambiguitysearchmethod,andthiskindofcoefficientscanbeusedinshortbaselineambiguityresolution.

Key words: BeiDousatellitenavigationsystem, triple-frequency, linearcombination, integerlinear-transformation, optimization