[
Böhm J., Möller G., Schindelegger M., Pain G., Weber R. (2015) Development of an improved empirical model for slant delays in the troposphere (GPT2w), GPS Solutions, Vol. 19, 433-441.
]Search in Google Scholar
[
Dan S., Santra A., Mahato S., Bose A. (2020) On use of low cost, compact GNSS modules for ionosphere monitoring.10.1002/essoar.10502298.1
]Search in Google Scholar
[
De Bakker P.F., Tiberius C.C. (2017) Real-time multi-GNSS single-frequency precise point positioning, GPS Solutions, Vol. 21, 1791-1803.
]Search in Google Scholar
[
Elmezayen A., El-Rabbany A. (2019) Precise point positioning using world’s first dual-frequency GPS/Galileo Smartphone, Sensors, Vol. 19, 2593.
]Search in Google Scholar
[
Elsheikh M., Yang H., Nie Z., Liu F., Gao Y. (2018) Testing and analysis of instant PPP using freely available augmentation corrections, Proceedings of the 31st International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 2018), Miami, FL, USA, 2018, 24-28.10.33012/2018.15970
]Search in Google Scholar
[
Elsobeiey M., Al-Harbi S. (2016) Performance of real-time precise point positioning using IGS real-time service, GPS Solutions, Vol. 20, 565-571.
]Search in Google Scholar
[
IGS. (2020) International GNSS real-time service, Available at: http://www.igs.org/rts [Accessed May 25, 2020].
]Search in Google Scholar
[
Kouba J. (2015) A guide to using international GNSS service (IGS) products, IGS [Online]. Available at: https://kb.igs.org/hc/en-us/articles/201271873-A-Guide-to-Using-the-IGS-Products [Accessed December 25, 2019].
]Search in Google Scholar
[
Krietemeyer A., Marel H.V.D., Giesen N.V.D., Veldhuis M.-C.T. (2020) High quality zenith tropospheric delay estimation using a low-cost dual-frequency receiver and relative antenna calibration. Remote Sensing, Vol. 12, 1393.10.3390/rs12091393
]Search in Google Scholar
[
Nie Z., Liu, F., Gao, Y. (2020) Real-time precise point positioning with a low-cost dual-frequency GNSS device, GPS Solutions, Vol. 24, 9.10.1007/s10291-019-0922-3
]Search in Google Scholar
[
Nie Z., Yang H., Zhou P., Gao Y., Wang Z. (2019) Quality assessment of CNES real-time ionospheric products, GPS Solutions, Vol. 23, 11.
]Search in Google Scholar
[
Psychas D., Bruno J., Massarweh L., Darugna F. (2019) Towards sub-meter positioning using android raw GNSS measurements, 32nd International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS+ 2019, 2019, Institute of Navigation, 3917-3931.10.33012/2019.17077
]Search in Google Scholar
[
Rizos C., Montenbruck O., Weber R., Weber G., Neilan R., Hugentobler U. (2013) The IGS MGEX experiment as a milestone for a comprehensive multi-GNSS service, Proceedings of ION PNT, Honolulu, Hawaii 289-295.
]Search in Google Scholar
[
Saastamoinen. (1973) Contributions to the theory of atmospheric refraction, Bulletin Géodésique, Vol. 107, 13-34.
]Search in Google Scholar
[
U-Blox. (2020) ZED-F9P module Available at: https://www.u-blox.com/en/product/zed-f9p-module [Accessed May 30, 2020].
]Search in Google Scholar
[
US-Coast-Guard. GPS constellation status. Available at: https://www.navcen.uscg.gov/?Do=constellationStatus [Accessed January 21, 2020].
]Search in Google Scholar
[
Wang Z., Li Z., Wang L., Wang X., Yuan H. (2018) Assessment of multiple GNSS real-time SSR products from different analysis centers, ISPRS International Journal of Geo-Information, Vol. 7, 85.
]Search in Google Scholar
[
Wu Q., Sun M., Zhou C., Zhang P. (2019) Precise point positioning using dual-frequency GNSS observations on smartphone, Sensors, Vol. 19, 2189.
]Search in Google Scholar
[
Xu, G., Xu, Y. (2016) GPS: Theory, algorithms and applications, Springer: Berlin/Heidelberg, Germany.
]Search in Google Scholar
[
Zhang Q., Zhao L., Zhao L., Zhou J. (2018) An improved robust adaptive Kalman filter for GNSS precise point positioning, IEEE Sensors Journal, Vol. 18, 4176-4186.
]Search in Google Scholar
