Optimal Independent Baseline Searching for Global GNSS Networks
Publication: Journal of Surveying Engineering
Volume 147, Issue 1
Abstract
An -station continuously operated global navigation satellite system (GNSS) network contains independent baselines. Baseline structure is critical to positioning accuracy, and the final result is dependent on the baseline selection strategies. The baseline length and amount of common observations are the primary principles for baseline selection. However, there are few discussions about the optimal strategy to determine the independent baseline of a huge GNSS network. To enhance the performance of the multibaseline solution, a comparison is drawn between the conventional method and a weighting strategy. Observations from continuous stations distributed globally within the International GNSS Service (IGS) are explored. At first, two conventional principles for baseline selection are tested. Subsequently, a weighting scheme is developed to exploit these two strategies. The enhanced method improves nearly 10% external accuracy compared with the classical methods, which can be verified from the experiment on January 1, 2012. Lastly, the network experiment is extended to the whole year of 2012 to increase statistical significance. It is therefore revealed that the novel weighting strategy (WEIGHT), with an equal chance of two conventional strategies, mitigates 0.4%–3.0% three-dimensional (3D) coordinate error of the whole year. Also, an analysis of the probability of gross errors indicates that WEIGHT exhibits better performance. Unlike the conventional view, it is shown that a proper weight of OBS-MAX and SHORTEST could form a better coordinate calculation result and a lower gross error rate. In conclusion, these experiments suggest a proposed method that synthetically considers the length of total stations and the total number of observations, and it is verified that WEIGHT is a better choice for searching independent baselines.
Get full access to this article
View all available purchase options and get full access to this article.
Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
The specific data that is available upon request:
1.
All the source RINEX file and result files from January 1, 2012;
2.
The 1-year coordinate result files of different strategies; and
3.
The code for the minimum spanning tree.
Acknowledgments
Funding from Harbin Institute of Technology at Shenzhen and Shandong University at Weihai is gratefully acknowledged. This work is supported by the Shenzhen science and technology program (Group No. KQTD20180410161218820). This work is supported by the National Key Research Program of China “Collaborative Precision Positioning Project” (No. 2016YFB0501900). Grateful acknowledgement is made to those who helped with this research: Prof. Dagang Ye from National Taipei University (NTPU) provided help with software; the editor and three anonymous reviewers gave heuristic advice and detailed correction. The numerical calculation in this paper is finished based on the supercomputing system in the Supercomputing Center, Shandong University at Weihai.
References
Alhamadani, O. Y. M. Z. 2018. “An optimum strategy for producing precise GPS satellite orbits using double-differenced observations.” J. Eng. 24 (9): 109–124. https://doi.org/10.31026/j.eng.2018.09.08.
Alizadeh-Khameneh, M. A., L. E. Sjöberg, and A. B. O. Jensen. 2017. “Optimisation of GNSS networks: Considering baseline correlations.” Surv. Rev. 51 (364): 35–42. https://doi.org/10.1080/00396265.2017.1342896.
Chen, Z., L. Zhiping, C. Yang, and L. Hao. 2013. “Parallel computing of GNSS data based on Bernese processing engine.” Geod. Geodyn. 33 (5): 79–82.
Cui, Y., Z. Lv, L. Li, Z. Chen, D. Sun, and Y. Kwong. 2017. “A fast parallel processing strategy of double difference model for GNSS huge networks.” Acta Geod. Cartographica Sin. 46 (7): 48–56. https://doi.org/10.11947/j.AGCS.2017.20160585.
Cui, Y., Z. Lv, Y. Zhang, Z. Chen, and L. Li. 2015. “A strategy of large GNSS network data rapid and efficient processing.” Geod. Geodyn. 35 (3): 383–386.
Dach, R., S. Lutz, P. Walser, and P. Fridez. 2015. Bernese GNSS software version 5.2. Bern, Switzerland: Univ. of Bern.
Erciyes, K. 2013. Minimum spanning trees. London: Springer.
Hua, C. 2010. “Application research of method of large network real time data rapid solution, Wuhan.” Ph.D. dissertation, Univ. of Wuhan.
Johnston, G. T. 1994a. “Comparison of two multi-site reference station differential GPS systems.” J. Navig. 47 (3): 305–322. https://doi.org/10.1017/S037346330001225X.
Johnston, G. T. 1994b. “Results and performance of multi-site reference station differential GPS.” Int. J. Satell. Commun. 12 (5): 475–488. https://doi.org/10.1002/sat.4600120509.
Kaplan, E., and C. Hegarty. 2005. Understanding GPS: Principles and applications. Norwood, MA: Artech House.
Kowalczyk, K., and J. Rapiński. 2017. “Robust network adjustment of vertical movements with GNSS data.” Geofizika 34 (1): 45–65. https://doi.org/10.15233/gfz.2017.34.3.
Kruskal, J. B. 1964. “Multidimensional scaling by optimizing goodness of fit to a nonmetric hypothesis.” Psychometrika 29 (1): 1–27. https://doi.org/10.1007/BF02289565.
Li, L., Z. Lu, Z. Chen, Y. Cui, Y. Kuang, and F. Wang. 2019a. “Parallel computation of regional CORS network corrections based on ionospheric-free PPP.” GPS Solutions 23 (3): 70. https://doi.org/10.1007/s10291-019-0864-9.
Li, L., Z. Lu, Z. Chen, Y. Cui, D. Sun, Y. Wang, Y. Kuang, and F. Wang. 2019b. “GNSSer: Objected-oriented and design pattern-based software for GNSS data parallel processing.” J. Spatial Sci. 1–21. https://doi.org/10.1080/14498596.2019.1574245.
Loomis, P., L. Sheynblatt, and T. Mueller. 1991. “Differential GPS network design.” In Proc., 4th Int. Technical Meeting of the Satellite Division of the Institute of Navigation (ION GPS 1991), 511–512. Albuquerque, NM: Institute of Navigation.
Omogunloye, O. G., C. V. Okorocha, B. M. Ojegbile, J. O. Odumosu, and O. G. Ajayi. 2017. “Comparative analysis of the standard error in relative GNSS positioning for short, medium and long baselines.” J. Geomatics 11: 207–217.
Parkinson, B. W., and J. J. Spilker. 1996. The global positioning system theory and applications. Washington, DC: American Institute of Aeronautics and Astronautics.
Saalfeld, A. 1999. “Generating basis sets of double differences.” J. Geod. 73 (6): 291–297. https://doi.org/10.1007/s001900050246.
Teunissen, P., and O. Montenbruck. 2017. Springer handbook of global navigation satellite systems. New York: Springer.
Wei, E., K. Yang, X. Deng, and Q. Zhang. 2011. “On the method of selecting independent baselines for GPS control network.” In Proc., Int. Conf. on Electronics, Communications and Control, 2162–2165. New York: IEEE.
Wielgosz, P., J. Paziewski, and R. Baryła. 2011. “On constraining zenith tropospheric delays in processing of local GPS networks with Bernese software.” Surv. Rev. 43 (323): 472–483. https://doi.org/10.1179/003962611X13117748891877.
Wieser, A. 2004. “Reliability checking for GNSS baseline and network processing.” GPS Solutions 8 (2): 55–66. https://doi.org/10.1007/s10291-004-0091-9.
Xu, G., and Y. Xu. 2016. GPS: Theory, algorithms and applications. New York: Springer.
Ye, F., Y. Yuan, B. Tan, Z. Deng, and J. Ou. 2019. “The preliminary results for five-system ultra-rapid precise orbit determination of the one-step method based on the double-difference observation model.” Remote Sens. 11 (1): 46. https://doi.org/10.3390/rs11010046.
Yetkin, M., C. Inal, and C. O. Yigit. 2013. “The optimal design of baseline configuration in GPS networks by using the particle swarm optimisation algorithm.” Surv. Rev. 43 (323): 700–712. https://doi.org/10.1179/003962611X13117748892597.
Zajdel, R., K. Sośnica, R. Dach, G. Bury, L. Prange, and A. Jäggi. 2019. “Network effects and handling of the geocenter motion in multi-GNSS processing.” J. Geophys. Res. Solid Earth 124 (6): 5970–5989. https://doi.org/10.1029/2019JB017443.
Information & Authors
Information
Published In
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Dec 29, 2019
Accepted: Jul 10, 2020
Published online: Oct 16, 2020
Published in print: Feb 1, 2021
Discussion open until: Mar 16, 2021
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.