Determination of Ionosphere Gradient in Short Baselines by Using Single Frequency Measurements

This paper proposes a single frequency based ionosphere gradient detector. Since ionospheric delays can strongly change locally and rapidly due to ionospheric disturbances, the large differences in ionospheric delays between the receiver stations may arise. Therefore, it is necessary for the improvement of the positioning accuracy, availability and reliability to develop the detection method in such cases. In our proposed method, Kalman filter is applied to single difference (SD) code pseudorange and SD carrier phase measurements to estimate SD ionospheric delays, SD carrier phase ambiguities and SD receiver clock error. Further, we apply SD ionosphere-free combinations to determine absolute ionospheric delays in order to distinguish ionospheric delays from carrier phase ambiguities. The estimating performance of our proposed method is evaluated with ionospheric anomalous observable data.

並列關鍵字

Ionospheric anomaly gradient detector ； Single frequency application ； Kalman filter

被引用紀錄

房軒（2015）。軟物質系統電動力學現象:擴散泳動暨電荷調節現象探討〔博士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2015.02324

劉煥偉（2005）。GTD450 麻田散鐵不?袗?之時效組織研究〔碩士論文，國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2005.01336

延伸閱讀

巫明哲（2010）。Improving Single-Frequency GPS Precise Point Positioning Using Ionospheric Models〔碩士論文，國立中央大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0031-1903201314405512
褚芳達（2007）。A long term observation of ionospheric irregularities at low latitudes by using GPS phase fluctuations〔博士論文，國立中央大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0031-0207200917350976
Kinugasa, N., Takahashi, F., & Kohno, R. (2017). Mitigation of Ionospheric Effect on Multi-GNSS Positioning with Ionosphere Delay Estimation Using Single-Frequency Measurements of Selected Satellites. Journal of Aeronautics, Astronautics and Aviation, 49(2), 93-100. https://doi.org/10.6125/17-0123-927
Liu, J. Y., Chu, Y. H., Chen, M. Q., Tsai, L. C., & Huang, C. M. (2000). Modeling and Ground Observations of the Ionosphere Related to the COSMIC Project. Terrestrial, Atmospheric and Oceanic Sciences, 11(1), 349-364. https://www.airitilibrary.com/Article/Detail?DocID=10170839-200003-11-1-349-364-a
Pi, X. Q., Mannucci, A. J., Iijima, B. A., Wilson, B. D., Komjathy, A., Runge, T. F., & Akopian, V. (2009). Assimilative Modeling of Ionospheric Disturbances with FORMOSAT-3/COS MIC and Ground-Based GPS Measurements. Terrestrial, Atmospheric and Oceanic Sciences, 20(1), 273-285. https://www.airitilibrary.com/Article/Detail?DocID=10170839-200902-20-1-273-285-a

國際替代計量

Determination of Ionosphere Gradient in Short Baselines by Using Single Frequency Measurements

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