Next Article in Journal
Short-Term and Long-Term Forecasting for the 3D Point Position Changing by Using Artificial Neural Networks
Previous Article in Journal
Generative Street Addresses from Satellite Imagery
Article Menu
Issue 3 (March) cover image

Export Article

Open AccessArticle
ISPRS Int. J. Geo-Inf. 2018, 7(3), 85; https://doi.org/10.3390/ijgi7030085

Assessment of Multiple GNSS Real-Time SSR Products from Different Analysis Centers

1
Academy of Opto-Electronics, Chinese Academy of Sciences, 9 Dengzhuang South Road, Haidian District, Beijing 100094, China
2
University of Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing 100049, China
3
School of Environment and Spatial Informatics, China University of Mining and Technology, 1 Daxue Road, Xuzhou 221116, China
*
Authors to whom correspondence should be addressed.
Received: 15 January 2018 / Revised: 24 February 2018 / Accepted: 7 March 2018 / Published: 8 March 2018
View Full-Text   |   Download PDF [8958 KB, uploaded 8 March 2018]   |  

Abstract

The real-time State Space Representation (SSR) product of the GNSS (Global Navigation Satellite System) orbit and clock is one of the most essential corrections for real-time precise point positioning (PPP). In this work, the performance of current SSR products from eight analysis centers were assessed by comparing it with the final product and the accuracy of real-time PPP. Numerical results showed that (1) the accuracies of the GPS SSR product were better than 8 cm for the satellite orbit and 0.3 ns for the satellite clock; (2) the accuracies of the GLONASS (GLObalnaya NAvigatsionnaya Sputnikovaya Sistema) SSR product were better than 10 cm for orbit RMS (Root Mean Square) and 0.6 ns for clock STD (Standard Deviation); and (3) the accuracies of the BDS (BeiDou Navigation Satellite System) and Galileo SSR products from CLK93 were about 14.54 and 4.42 cm for the orbit RMS and 0.32 and 0.18 ns for the clock STD, respectively. The simulated kinematic PPP results obtained using the SSR products from CLK93 and CLK51 performed better than those using other SSR products; and the accuracy of PPP based on all products was better than 6 and 10 cm in the horizontal and vertical directions, respectively. The real-time kinematic PPP experiment carried out in Beijing, Tianjin, and Shijiazhuang, China indicated that the SSR product CLK93 from Centre National d’Etudes Spatiales (CNES) had a better performance than CAS01. Moreover, the PPP with GPS + BDS dual systems had a higher accuracy than those with only a GPS single system. View Full-Text
Keywords: precise point positioning; orbits and clocks; state space representation; analysis centers precise point positioning; orbits and clocks; state space representation; analysis centers
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Wang, Z.; Li, Z.; Wang, L.; Wang, X.; Yuan, H. Assessment of Multiple GNSS Real-Time SSR Products from Different Analysis Centers. ISPRS Int. J. Geo-Inf. 2018, 7, 85.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
ISPRS Int. J. Geo-Inf. EISSN 2220-9964 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top