Fusion tropospheric model and its application in precise point positioning

CAI Shu; LAO Yuanji; LI Mengheng; QIN Tuanfa

doi:10.13442/j.gnss.1008-9268.2020.06.007

Volume 45 Issue 6

Dec. 2020

Turn off MathJax

Article Contents

Article Navigation > GNSS World of China > 2020 > 45(6): 46-54

CAI Shu, LAO Yuanji, LI Mengheng, QIN Tuanfa. Fusion tropospheric model and its application in precise point positioning[J]. GNSS World of China, 2020, 45(6): 46-54. doi: 10.13442/j.gnss.1008-9268.2020.06.007

Citation:

PDF( 975 KB)

Fusion tropospheric model and its application in precise point positioning

doi: 10.13442/j.gnss.1008-9268.2020.06.007

CAI Shu^1,2,3,
LAO Yuanji^1,2,3,
LI Mengheng^1,2,3,
QIN Tuanfa^{1,2,3
,
,}

1. School of Computer and Electronic Information, Guangxi University, Nanning 530004, China;
2. Guangxi Key Laboratory of Multimedia Communications and Network Technology, Nanning 530004, China;
3. Guangxi Colleges and Universities Key Laboratory of Multimedia Communications and Information Processing, Nanning 530004, China

Received Date: 2020-07-01
Available Online: 2021-04-09

Abstract

Abstract

Limited by the measured meteorological parameters, the accuracy of the traditional tropospheric model using standard atmospheric parameters is not high. The precise tropospheric model using parameter estimation method increases the number of parameters to be estimated of the observation equation and affects the convergence rate. For the absence of measured meteorological parameters, a fusion tropospheric model is proposed. Two non-measured meteorological parameter models are used to calculate the meteorological parameters at the average sea level and at the station respectively, and then the Saastamoinen model empirical formula is used to solve the zenith tropospheric delay. Precise point positioning(PPP) experiments were performed on RTKLIB software. The proposed fusion tropospheric model is free from the limits of measured meteorological parameters. The results show that when this fusion troposphere model is used, the positioning accuracy in the east, north and up directions is improved by 16 mm、1 mm、2.2 mm, compared with the Saastamoinen model, respectively.And, the positioning accuracy in the east, north and up directions is improved by 13.8 mm、0.7 mm、1.6 mm compared with the MOPS model,respectively. The positioning accuracy in the east, north and up directions is improved by 2.9 mm、0.4 mm、0.7 mm compared with the GPT/UNB3m+Sa model,respectively. The positioning accuracy in the up and north direction is close to the parameter estimation model. The PPP positioning accuracy is improved by using the proposed fusion tropospheric model.
- tropospheric model,
- meteorological parameters,
- RTKLIB,
- precise point positioning,
- positioning accuracy

FullText(HTML)

References(24)

References

[1]	RAJU C S,SAHA K,PARAMESWARAN K.Signature of atmospheric oscillations in GPS-Measured tropospheric delay[J].Journal of atmospheric and solar-terrestrial physics,2009,71(17-18):1784-1793.DOI: 10.1016/j.jastp.2009.06.011.
[2]	FERNANDES M J,LAZARO C,NUNES A L,et al.GNSS-Derived path delay:an approach to compute the wet tropospheric correction for coastal altimetry[J].IEEE geoscience and remote sensing letters,2010,7(3):596-600.DOI: 10.1109/LGRS.2010.2042425.
[3]	WANG N B,LI Z S,LI M,et al.GPS,BDS and Galileo ionospheric correction models:an evaluation in range delay and position domain[J].Journal of atmospheric and solar-terrestrial physics,2018(170):83-91.DOI: 10.1016/j.jastp.2018.02.014.
[4]	LIU Z,CHEN X H,LIU Q.Estimating zenith tropospheric delay based on GPT2w model[J].IEEE access,2019(7):139258-139263.DOI: 10.1109/ACCESS.2019.2931984.
[5]	范昊鹏,孙中苗,刘晓刚,等.方位角对斜路径对流层延迟的影响研究[J].大地测量与地球动力学,2019,39(6):634-638.
[6]	毛健,崔铁军,李晓丽,等.融合大气数值模式的高精度对流层天顶延迟计算方法[J].测绘学报,2019,48(7):862-870.
[7]	SAASTAMOINEN J.Contributions to the theory of atmospheric refraction.Part II.Refraction corrections in satellite geodesy[J].Bulletin géodésique,1973,107(1):13-34.DOI: 10.1007/BF02522083.
[8]	JUNI I,RÓZSA S.Validation of a new model for the estimation of residual tropospheric delay error under extreme weather conditions[J].Periodica polytechnica civil engineering,2019,63(1):121-129.DOI: 10.3311/PPci.12132.
[9]	KOUBA J.Testing of global pressure/temperature (GPT) model and global mapping function (GMF) in GPS analyses[J].Journal of geodesy,2009,83(3-4):199-208.DOI: 10.1007/s00190-008-0229-6.
[10]	LAGLER K,SCHINDELEGGER M,BOHM J,et al.GPT2:Empirical slant delay model for radio space geodetic techniques[J].Geophysical research letters,2013,40(6):1069-1073.DOI: 10.1002/grl.50288.
[11]	BÖHM J,MÖLLER G,SCHINDELEGGER M,et al.Development of an improved empirical model for slant delays in the troposphere (GPT2w)[J].GPS solutions,2015,19(3):433-441.DOI: 10.1007/s10291-014-0403-7.
[12]	杨徉,喻国荣,潘树国,等.一种综合的对流层延迟模型算法[J].东南大学学报(自然科学版),2013,43(增刊2):419-423.
[13]	姚宜斌,张豹,严凤,等.两种精化的对流层延迟改正模型[J].地球物理学报,2015,58(5):1492-1501.
[14]	杜晓燕,乔江,卫佩佩.一种用于中国地区的对流层天顶延迟实时修正模型[J].电子与信息学报,2019,41(1):156-164.
[15]	杨慧君,冯克明,谢淑香,等.基于BP神经网络的GPT2w改进模型及全球精度分析[J].系统工程与电子技术,2019,41(3):500-508.
[16]	黄良珂,李琛,王浩宇,等.基于GPT2w模型计算中国地区对流层加权平均温度的精度分析[J].大地测量与地球动力学,2019,39(5):496-501.
[17]	TAKÁCS B,SIKI Z,MARKOVITS-SOMOGYI R.Extension of RTKLIB for the calculation and validation of protection levels[J].Remote sensing and spatial information sciences,2017,XLII-4(W2):161-166.DOI: 10.5194/isprs-archives-XLII-4-W2-161-2017.
[18]	ROMERO-ANDRADE R,ZAMORA-MACIEL A,JOSÉ DE J,et al.Comparative analysis of precise point positioning processing technique with GPS low-cost in different technologies with academic software[J].Measurement,2019(136):337-344.DOI: 10.1016/j.measurement.2018.12.100
[19]	LI Z,ZHANG JY,LI T,et al.Analysis of static and dynamic real-time precise point positioning and precision based on SSR correction[C]//2016 IEEE International Conference on Information and Automation(ICIA).DOI: 10.1109/cLNFa.2016.78.32151.
[20]	GAO Y,SHEN X B.A new method for carrier-phase-based precise point positioning[J].Annual of navigation,2002,49(2):109-116.DOI: 10.1002/j.2161-4296.2002.tb00260.x.
[21]	DAVIS J L,HERRING T A,SHAPPIRO I I,et al.Geodesy by radio interferometry:effects of atmospheric modeling errors on estimates of baseline length[J].Radio science,1985,6(20):1593-1607.DOI: 10.1029/RS0201006P01593.Source:NTRS.
[22]	TAKASU T,YASUDA A.Development of the low-cost RTK-GPS receiver with an open source program package RTKLIB[C]//International Symposium on GPS/GNSS,Korea,2009:4-6.
[23]	RTCA/DO-229C,Minimum operational performance standards for global positioning system/wide area augmentation system airborne equipment[S].RTCA inc,2001:A7-A9.
[24]	KOS T,BOTINĈAN M,DLESK A.Estimation of MOPS/EGNOS tropospheric delay model accuracy at northern and southern latitudes[C]//Proceedings of 2nd GNSS Vulnerabilities and Solutions Conference London,2009:1-7.

Relative Articles

Supplements(0)

Cited By

Proportional views

Proportional views

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Get Citation

PDF

XML

Article Metrics

Article views (393) PDF downloads(16)

Fusion tropospheric model and its application in precise point positioning

doi: 10.13442/j.gnss.1008-9268.2020.06.007

Abstract

References

Proportional views

Catalog

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Related

Fusion tropospheric model and its application in precise point positioning

doi: 10.13442/j.gnss.1008-9268.2020.06.007

Abstract

References

Proportional views

Catalog

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Related

Export File

Citation

Format

Content