Assessing the Contribution of Galileo to GPS+GLONASS Single Point Positioning Navigation

Yıl 2020, Cilt: 7 Sayı: 3, 1377 - 1383, 30.09.2020

Sermet Öğütçü

https://doi.org/10.31202/ecjse.754095

Öz

In addition to the legacy GPS and GLONASS, a new global emerging system, European Galileo became operational for positioning, timing, and navigation purposes. In this study, the contribution of the Galileo constellation to GPS+GLONASS combined single point positioning (SPP) is investigated. A one-week of data in 2019 (DOY: 274-280) and 25 IGS-MGEX stations are chosen to conduct GPS+GLONASS and GPS+GLONASS+Galileo SPP. The results indicate that average Root Mean Square Errors (RMSE) of northing, easting and, up components are improved by 11%, 16%, and 4%, respectively. It is also observed that maximum errors of GPS+GLONASS SPP are significantly reduced when adding Galileo constellation.

Anahtar Kelimeler

Galileo, GLONASS, GPS, SPP

Galileo’nun GPS+GLONASS Tek Nokta Konum Belirlemeye Katkısı

Öz

İlk olarak ortaya çıkan küresel GPS ve GLONASS'a ek olarak, Avrupa Galileo uydu sistemi konumlandırma, zamanlama ve navigasyon amacıyla faaliyete geçtmiştir. Bu makalede, Galileo navigasyon uydularının GPS + GLONASS kombine tek nokta konumlandırmasına (SPP) katkısı incelenmiştir. GPS + GLONASS ve GPS + GLONASS + Galileo SPP değerlendirmeleri için 2019'daki bir haftalık veri (DOY: 274-280) ve 25 IGS-MGEX istasyonu seçilmiştir. Sonuçlar, kuzey, doğu ve yukarı bileşenlerin ortalama Karasel Ortalama Hatalarının (RMSE) sırasıyla %11,%16 ve %4 oranında iyileştirildiğini göstermektedir. Ayrıca, GPS+GLONASS SPP değerlendirmelerine ait maksimum hataların, Galileo uyduları eklendikten sonra ciddi oranda azaldığı gözlemlenmiştir.

Anahtar Kelimeler

Galileo, GLONASS, GPS, SPP

Kaynakça

• Guo, F., Li, X., Zhang, X., Wang, J., 2017. Assessment of precise Orbit and clock products for Galileo, Beidou, and QZSS from IGS Multi-GNSS Experiment (MGEX). GPS Solut. 21 (1), 279–290.
• Montenbruck, O., Steigenberger, P., Prange, L., Deng, Z., Zhao, Q., Perosanz, F., 2017. The Multi-GNSS Experiment (MGEX) of the international GNSS service (IGS)–achievements, prospects and challenges. Adv. Space Res. 59 (7), 1671–1697.
• Li, X., Li, X., Yuan, Y., Zhang, K., Zhang, X., Wickert, J., 2018. Multi-GNSS phase delay estimation and PPP ambiguity resolution: GPS, BDS, GLONASS, Galileo. J. Geod. 92, 579–608.
• Li, X., Ge, M., Dai, X., Ren, X., Fritsche, M., Wickert, J., & Schuh, H. (2015). Accuracy and reliability of multi-GNSS real-time precise positioning: GPS, GLONASS, BeiDou, and Galileo. Journal of Geodesy, 89(6), 607-635.
• Xia, F., Ye, S., Xia, P., Zhao, L., Jiang, N., Chen, D., & Hu, G. (2019). Assessing the latest performance of Galileo-only PPP and the contribution of Galileo to Multi-GNSS PPP. Advances in Space Research, 63(9), 2784-2795.
• Ogutcu, S. (2020). Assessing the contribution of Galileo to GPS+ GLONASS PPP: Towards full operational capability. Measurement, 151, 107143.
• Alcay, S., Ogutcu, S., Kalayci, I., & Yigit, C. O. (2019). Displacement monitoring performance of relative positioning and Precise Point Positioning (PPP) methods using simulation apparatus. Advances in Space Research, 63(5), 1697-1707.
• OGUTCU, S. The contribution of Multi-GNSS Experiment (MGEX) to precise point positioning over Turkey: Consideration of observation time and satellite geometry. El-Cezeri Journal of Science and Engineering, 6(3), 642-658.
• Elmezayen, A., & El-Rabbany, A. (2019). Precise Point Positioning Using World’s First Dual-Frequency GPS/GALILEO Smartphone. Sensors, 19(11), 2593
• Ryan, S., Petovello, M. and Lachapelle, G. 1998. Augmentation of GPS for ship navigation in constricted water ways. In: Proceedings of ION NTM 98, Long Beach, CA, USA, Jan 21–23, 1998, pp.459–67
• Pan, L., Cai, C., Santerre, R., & Zhang, X. (2017). Performance evaluation of single-frequency point positioning with GPS, GLONASS, BeiDou and Galileo. Survey Review, 49(354), 197-205
• Santerre, R., Pan, L., Cai, C., & Zhu, J. (2014). Single point positioning using GPS, GLONASS and BeiDou satellites.
• Kwasniak, D. L. (2018, June). Single point positioning using GPS, Galileo and BeiDou system. In 2018 Baltic Geodetic Congress (BGC Geomatics) (pp. 310-315). IEEE
• Zhou, F., Dong, D., Li, P., Li, X., and Schuh, H., “Influence of stochastic modeling for inter-system biases on multi-GNSS undifferenced and uncombined precise point positioning”, GPS Solutions, 2015, 23(3): 59-60.
• Takasu, T., & Yasuda, A. (2009, November). Development of the low-cost RTK-GPS receiver with an open source program package RTKLIB. In International symposium on GPS/GNSS (pp. 4-6). International Convention Center Jeju Korea.
• Wang, N., Yuan, Y., Li, Z., & Huo, X. (2016). Improvement of Klobuchar model for GNSS single-frequency ionospheric delay corrections. Advances in Space Research, 57(7), 1555-1569.
• Liu, J., Chen, X., Sun, J., & Liu, Q. (2017). An analysis of GPT2/GPT2w+ Saastamoinen models for estimating zenith tropospheric delay over Asian area. Advances in Space Research, 59(3), 824-832