Physical augmentation factor of precision in GNSS

• Autorzy: Ma Lihua , Ai Guoxiang , Kong Ting

Identyfikatory

DOI

10.2478/arsa-2022-0009

• Języki publikacji: EN

Abstrakty

EN

The dilution of precision (DOP) in satellite navigation system provides a simple characterization of the user-satellite geometry and a quantitative assessment of the positioning constellation configuration. The essential idea of physical augmentation factor of precision (PAFP) proposed in this work, is that navigation signals are transmitted at multiple frequencies from each visible satellite in the positioning constellation, while users measure the corresponding multiple pseudoranges of satellites to achieve high precision code positioning. As the multiple pseudoranges of one satellite are measured independently by the corresponding navigation signals at different frequencies, it is reasonable to treat the measurement errors due to the satellite clock and ephemeris, the atmospheric propagation as uncorrelated, random, and identically distributed. The multipath effects and receiver noise are also processed with some empirical models. By measuring user-satellite code pseudoranges at different frequencies, the PAFP offers a scheme that produces the same effect as that of the redundant-overlapping constellation, thus equivalently improving the geometric DOP. It can effectively improve code positioning precision of satellite navigation system.

Słowa kluczowe

EN

satellite navigation system; positioning precision; DOP; PAFP

• Wydawca: Centrum Badań Kosmicznych PAN ; De Gruyter
• Czasopismo: Artificial Satellites : Journal of Planetary Geodesy
• Rocznik: 2022
• Tom: Vol. 57, No. 3
• Strony: 185--193
• Opis fizyczny: Bibliogr. 12 poz., rys., tab.

Twórcy

autor

Ma Lihua

• National Astronomical Observatories, Chinese Academy of Sciences, Beijing, P.R. China

autor

Ai Guoxiang

• National Astronomical Observatories, Chinese Academy of Sciences, Beijing, P.R. China

autor

Kong Ting

• National Astronomical Observatories, Chinese Academy of Sciences, Beijing, P.R. China

Bibliografia

• Ai, G., Ma, L., Shi, H., Ji, H. (2015). A physical augmentation factor of precision in GNSS. PRC Patent: ZL 201210090864.8, 2015-06-17.
• Ai, G., Sheng, P., Du, J., Zheng, Y., Cai, X., Wu, H., Hu, Y., Hua, Y., Li, X. (2009). Barometric altimetry system as virtual constellation applied in CAPS. Sci China Ser G-Phys Mech Astron. 52(3): 376-383.
• Ai, G., Shi, H., Wu, H., Yan, Y., Bian, Y., Hu Y., Li, Z., Guo, J., Cai, X. (2008). A positioning system based on communication satellites and the Chinese Area Positioning System (CAPS). Chin J Astron Astrophys. 8(6): 611-630.
• Kaplan, E., Hegarty, C. (2017). Understanding GPS/GNSS: Principles and Applications (3rd edition). Artech House, Boston.
• Kong, T., Ma, L., Ai, G. (2022). Research on improving satellite positioning precision based on multi-frequency navigation signals. Sensors, 22, 4210.
• Ma, L., Ai, G., Ji, H. (2014). Satellite navigation and positioning method combined with Doppler velocimetry. People’s Republic of China invention patent. PRC Patent: 201110164385.1, 2014-09-03.
• Milliken, R., Zoller, C. (1978). Principle of Operation of NAVSTAR and System Characteristics. Navigation, 25(2): 95-106.
• Misra, P., Enge, P. (2010). Global Positioning System: Signals, Measurements, and Performance (2nd edition). Ganga-Jamuna Press, Lincoln.
• Li, X., Wu, H., Bian, Y., Wang, D. (2009). Satellite virtual atomic clock with pseudorange difference function. Sci China Ser G-Phys Mech Astron, 52(3): 353-359.
• Li, Z., Yang, X., Ai, G., Shi, H., Qiao, R., Feng, C. (2009) A new method for determination of satellite orbits by transfer. Sci China Ser G-Phys Mech Astron, 52(3): 384-392.
• Spilker, J. (1996). Satellite Constellation and Geometric Dilution of Precision. Global Positioning System: Theory and Applications, Vol. I, Chapter 5, American Institute of Aeronautics and Astronautics, Inc., Washington, D.C.
• Zhou, J., Chen, J., Hu, X. (2020). Principle and Application of Beidou Satellite Navigation System. Science Press, Beijing.

Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).