21 July 2017 A study of ionospheric grid modification technique for BDS/GPS receiver
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Proceedings Volume 10420, Ninth International Conference on Digital Image Processing (ICDIP 2017); 104204O (2017) https://doi.org/10.1117/12.2281912
Event: Ninth International Conference on Digital Image Processing (ICDIP 2017), 2017, Hong Kong, China
Abstract
For the single-frequency GPS receiver, ionospheric delay is an important factor affecting the positioning performance. There are many kinds of ionospheric correction methods, common models are Bent model, IRI model, Klobuchar model, Ne Quick model and so on. The US Global Positioning System (GPS) uses the Klobuchar coefficients transmitted in the satellite signal to correct the ionospheric delay error for a single frequency GPS receiver, but this model can only reduce the ionospheric error of about 50% in the mid-latitudes. In the Beidou system, the accuracy of the correction delay is higher. Therefore, this paper proposes a method that using BD grid information to correct GPS ionospheric delay to improve the ionospheric delay for the BDS/GPS compatible positioning receiver. In this paper, the principle of ionospheric grid algorithm is introduced in detail, and the positioning accuracy of GPS system and BDS/GPS compatible positioning system is compared and analyzed by the real measured data. The results show that the method can effectively improve the positioning accuracy of the receiver in a more concise way.
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Xuelin Liu, Xuelin Liu, Meina Li, Meina Li, Lei Zhang, Lei Zhang, } "A study of ionospheric grid modification technique for BDS/GPS receiver ", Proc. SPIE 10420, Ninth International Conference on Digital Image Processing (ICDIP 2017), 104204O (21 July 2017); doi: 10.1117/12.2281912; https://doi.org/10.1117/12.2281912
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