GPS动态水汽反演对对流层天顶延迟解算精度分析
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摘要
针对GPS动态水汽反演过程中对对流层天顶延迟解算精度的评估方法问题,提出了一种利用对流层延迟闭合和附合条件来评估对流层估计精度的方法。通过对PBO观测网中的12个CORS基站以及6个IGS基站的观测数据分析,分别从内符合精度和外符合精度两方面来评估动态对流层解算的精度。在内符合精度的数据处理上,使用事后精密星历,每15s计算一次相对对流层延迟数据。精度满足GPS动态水汽反演对天气预报的基本要求。在外符合精度的数据处理上,使用事后精密星历和超快星历分别对天顶方向对流层延迟进行处理,根据与静态参考值进行比对,两者结果高度吻合。研究结果对GPS动态水汽反演中动态对流层天顶延迟的解算具有重要的参考价值。
According to the method of assessing troposphere estimation precision in kinematic PGS water vapor inversion.The paper proposed a new method to assess troposphere estimation precision through tropospheric delay closing conditions and tropospheric delay connecting conditions.By analyzing PBO observation network's 12 CORS stations and 6IGS stations observation data to assess kinematic troposphere estimation precision through inner closed precision and external coincidence precision.Inner closed precision method in data processing,calculating the relative tropospheric delay results every 15 sby IGS ephemeris.Inner closed precision can meet the basic requirement weather forecast in GPS water vapor inversion.External coincidence precision method in data processing,calculating the tropospheric zenith delay by IGS ephemeris and IGU ephemeris,then compared with static reference result,found the results are highly consistent.This research has an important reference value for the precision of kinematic atmospheric delay solution in kinematic GPS water vapor inversion
According to the method of assessing troposphere estimation precision in kinematic PGS water vapor inversion.The paper proposed a new method to assess troposphere estimation precision through tropospheric delay closing conditions and tropospheric delay connecting conditions.By analyzing PBO observation network's 12 CORS stations and 6IGS stations observation data to assess kinematic troposphere estimation precision through inner closed precision and external coincidence precision.Inner closed precision method in data processing,calculating the relative tropospheric delay results every 15 sby IGS ephemeris.Inner closed precision can meet the basic requirement weather forecast in GPS water vapor inversion.External coincidence precision method in data processing,calculating the tropospheric zenith delay by IGS ephemeris and IGU ephemeris,then compared with static reference result,found the results are highly consistent.This research has an important reference value for the precision of kinematic atmospheric delay solution in kinematic GPS water vapor inversion
引文
[1]BEVIS M.GPS meteorology mapping zenith wet delays onto preciptable water[J].Journal of Applied Meteology,1994,33:379-386.
[2]黄丁发,熊永良.GPS卫星导航定位技术与方法[M].北京:科学出版社,2009:1-19.(HUANG Dingfa,XIONG Yongliang.GPS satellite navigation and positioning technology and method[M].Beijing:Science Press,2009:1-19.)
[3]刘宁.地基GPS反演大气水汽关键问题的理论与方法研究[D].成都:西南交通大学,2009:1-11.(LIU Ning.Study on theory and method of key issues in atmospheric water vapor inversion by ground-based GPS[D].Chengdu:Southwest Jiaotong University,2009:1-11.)
[4]周忠谟,周琪,易杰军.GPS卫星测量原理与应用[M].北京:测绘出版社,1997:120-141.(ZHOU Zhongmo,ZHOU Qi,YI Jiejun.Principles and applications of GPS satellite measurements[M].Beijing:Surveying and Mapping Press,1997:120-141.)
[5]徐韶光,熊永良,刘宁,等.利用地基GPS获取实时可降水量[J].武汉大学学报:信息科学版,2011,36(4):407-411.(XU Shaoguang,XIONG Yongliang,LIU Ning,et al.Get real precipitable by ground-based GPS[J].Cematics and Information Sciemce of Wuhan University,2011,36(4):407-411.)
[6]青盛,吕弋培,黄丁发,等.GPS水汽反演在成都地区的应用[J].四川测绘,2008,31(3):121-123.(QING Sheng,LYipei,HUANG Dingfa,et al.The application of GPS-PWV computing in chengdu area[J].Surveying and Mapping of Sichuan,2008,31(3):121-123.)
[7]李正航,赵晓峰,蔡吕盛.全球定位系统(GPS)技术的最新进展[J].测绘信息与技术,2002,27(1):19-23.(LI Zhenghang,ZHAO Xiaofeng,CAI Lvsheng.The latest progress of GPS[J].Journal of Geomatics,2002,27(1):19-23.)
[8]徐杰,孟黎,任超,等.对流层延迟改正中投影函数的研究[J].大地测量与地球动力学,2008,28(5):120-124.(XU Jie,MENG Li,REN Chao,et al.Analysis of mapping function in troposphere delay correction[J].Journal of Geodesy and Geodynamics,2008,28(5):120-124.)
[9]崔希璋,於宗俦,陶本藻,等.广义测量平差[M].武汉:武汉大学出版社,2009:16-18.(CUI Xizhang,YU Zongshou,TAO Benzao,et al.Generalized Surveying Adjustment[M].Wuhan:Wuhan University Press,2009:16-18.)
[10]谷晓平.GPS水汽反演及降雨预报方法研究[D].北京:中国农业大学,2004:1-19.(GU Xiaoping.Research on retrieval of GPS water vapor and method of rainfall forecast[D].Beiing:China Agricultural University,2004:1-19.)
[11]FANG Peng,GENDT G,SPRINGER T,et al.IGS near real-time products and their applications[J].GPS Solution,2001,4(4):2-8.
[12]胡奇.水准网测量平差软件设计与开发[D].合肥:安徽理工大学,2012:8-11.(HU Qi.Leveling network measurement adjustment software design and development[D].Hefei:Anhui University of Science,2012:8-11.)
[13]丁晓光.对流层延迟改正在GPS数据处理中的应用与研究[D].西安:长安大学,2009:24-52.(DING Xiaoguang.Research of tropospheric delay model and applications based on the GPS data processing[D].Xi’an:Chang'an University,2009:24-52.)
[14]SAASTAMOINEN J.Contributions to the theory of atmosphere refraction[J].Bullerin:Geodesique,1973:105-107.
[15]张力仁,徐爱功.GPS定位中的对流层模型分析[J].测绘工程,2009,18(6):33-36.(ZHANG Liren,XU Aigong.The troposphere model analysis in GPS positioning[J].Engineering of Surveying and Mapping,2009,18(6):33-36.)
[2]黄丁发,熊永良.GPS卫星导航定位技术与方法[M].北京:科学出版社,2009:1-19.(HUANG Dingfa,XIONG Yongliang.GPS satellite navigation and positioning technology and method[M].Beijing:Science Press,2009:1-19.)
[3]刘宁.地基GPS反演大气水汽关键问题的理论与方法研究[D].成都:西南交通大学,2009:1-11.(LIU Ning.Study on theory and method of key issues in atmospheric water vapor inversion by ground-based GPS[D].Chengdu:Southwest Jiaotong University,2009:1-11.)
[4]周忠谟,周琪,易杰军.GPS卫星测量原理与应用[M].北京:测绘出版社,1997:120-141.(ZHOU Zhongmo,ZHOU Qi,YI Jiejun.Principles and applications of GPS satellite measurements[M].Beijing:Surveying and Mapping Press,1997:120-141.)
[5]徐韶光,熊永良,刘宁,等.利用地基GPS获取实时可降水量[J].武汉大学学报:信息科学版,2011,36(4):407-411.(XU Shaoguang,XIONG Yongliang,LIU Ning,et al.Get real precipitable by ground-based GPS[J].Cematics and Information Sciemce of Wuhan University,2011,36(4):407-411.)
[6]青盛,吕弋培,黄丁发,等.GPS水汽反演在成都地区的应用[J].四川测绘,2008,31(3):121-123.(QING Sheng,LYipei,HUANG Dingfa,et al.The application of GPS-PWV computing in chengdu area[J].Surveying and Mapping of Sichuan,2008,31(3):121-123.)
[7]李正航,赵晓峰,蔡吕盛.全球定位系统(GPS)技术的最新进展[J].测绘信息与技术,2002,27(1):19-23.(LI Zhenghang,ZHAO Xiaofeng,CAI Lvsheng.The latest progress of GPS[J].Journal of Geomatics,2002,27(1):19-23.)
[8]徐杰,孟黎,任超,等.对流层延迟改正中投影函数的研究[J].大地测量与地球动力学,2008,28(5):120-124.(XU Jie,MENG Li,REN Chao,et al.Analysis of mapping function in troposphere delay correction[J].Journal of Geodesy and Geodynamics,2008,28(5):120-124.)
[9]崔希璋,於宗俦,陶本藻,等.广义测量平差[M].武汉:武汉大学出版社,2009:16-18.(CUI Xizhang,YU Zongshou,TAO Benzao,et al.Generalized Surveying Adjustment[M].Wuhan:Wuhan University Press,2009:16-18.)
[10]谷晓平.GPS水汽反演及降雨预报方法研究[D].北京:中国农业大学,2004:1-19.(GU Xiaoping.Research on retrieval of GPS water vapor and method of rainfall forecast[D].Beiing:China Agricultural University,2004:1-19.)
[11]FANG Peng,GENDT G,SPRINGER T,et al.IGS near real-time products and their applications[J].GPS Solution,2001,4(4):2-8.
[12]胡奇.水准网测量平差软件设计与开发[D].合肥:安徽理工大学,2012:8-11.(HU Qi.Leveling network measurement adjustment software design and development[D].Hefei:Anhui University of Science,2012:8-11.)
[13]丁晓光.对流层延迟改正在GPS数据处理中的应用与研究[D].西安:长安大学,2009:24-52.(DING Xiaoguang.Research of tropospheric delay model and applications based on the GPS data processing[D].Xi’an:Chang'an University,2009:24-52.)
[14]SAASTAMOINEN J.Contributions to the theory of atmosphere refraction[J].Bullerin:Geodesique,1973:105-107.
[15]张力仁,徐爱功.GPS定位中的对流层模型分析[J].测绘工程,2009,18(6):33-36.(ZHANG Liren,XU Aigong.The troposphere model analysis in GPS positioning[J].Engineering of Surveying and Mapping,2009,18(6):33-36.)