A Regional Zenith Tropospheric Correction Model over Southern California Area

Abstract:

In this paper, a new zenith tropospheric delay (ZTD) correction model is established by using 4 years of ZTD over Southern California, which not require any meteorological data and only related to the site’s elevation and the day of year. The results show that the stability and precision of the new model are better than Saastamoinen model using ECMWF date, and the precision increases along with increasing site’s elevation. The overall accuracy of the new model is about 3.86cm when used to predict zenith troposhperic delays in 2012 over Southern California area.

• Periodical: Applied Mechanics and Materials (Volumes 568-570)
• Pages: 292-296
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.568-570.292
• Online since: June 2014
• Authors: Li Long Liu, Miao Zhou*, Teng Xu Zhang, Liang Ke Huang
• Keywords: Elevation Influence, Precision Analysis, Regional Troposhperic Modeling, Zenith Troposhperic Delay

References

[1] Li W, Yuan Y B, Ou J K, et al. A new global zenith tropospheric delay model IGGtrop for GNSS application[J]. Chin Sci Bull, 2012, 57(15): 1317-1318.

DOI: 10.1007/s11434-012-5010-9

[2] Qinming Chen, Shuli Song, Stefan Heise, et al. Assessment of ZTD derived from ECMWF/NCEP data with GPS ZTD over China. GPS Solution, 2011, 15(4): 415-425.

DOI: 10.1007/s10291-010-0200-x

[3] Chen Zhaohua , Dai Wujiao. Effects of horizontal variation of tropospheric delay on GPS surveying[J]. Journal of Geodesy and Geodynamics, 2010, 30(3): 83-87.

[4] QU Wei-jing, et al. The evaluation of precision about Hopfield, Saastamoinen and EGNOS tropospheric delay correction model [J]. Acta Astronomica Sinica, 2008, 49(1): 113-114.

[5] LU Xian jian, YAN Hong, REN Chao. Comparison and Analysis on Fitting Models of the Regional Troposphere Delay [J]. GNSS World of China, 2010, 26-26.

[6] Wang Qianxin，Xu Guochang and Chen Zhengyang．Interpolation method of trop-ospheric delay of high altitude rover based on regional GPS network［J］．Geomatics and Information Science of Wuhan University，2010, 35(12): 1405-1407.

[7] Dai Wujiao, et al. Modeling regional precise tropospheric delay[J]. Geo-matics and Information Science of Wuhan University, 2011, 36(4): 392-393.

[8] Dai Wujia, Zhao Yan. Modeling the dry and wet component of regional tropospheric delay[J]. Journal of Geodesy and Geodynamic, 2013, 33(2); 76-76.

[9] Liu lilong, et al. Research on 4D modeling for zenith troposhperic delays based on regional CORS network[J]. Journal of Geodesy and Geodynamoc, 2012, 32(3): 45-46.

[10] Huang Liangke, Liu Lilong and Yao Chaolong. A zenith tropospheric delay correction model based on the regional CORS network[J]. Geodesy and Geodynamics, 2012, 3 (4): 53-62.

DOI: 10.3724/sp.j.1246.2012.00053.1