Assessment of Satellite Differential Code Biases and Regional Ionospheric Modeling Using Carrier-Smoothed Code of BDS GEO and IGSO Satellites.
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| Title: | Assessment of Satellite Differential Code Biases and Regional Ionospheric Modeling Using Carrier-Smoothed Code of BDS GEO and IGSO Satellites. |
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| Authors: | Gao, Xiao1 (AUTHOR) gaoxiao@xauat.edu.cn, Ma, Zongfang1 (AUTHOR) linashu@xauat.edu.cn, Shu, Lina1 (AUTHOR), Pan, Lin2 (AUTHOR) linpan@csu.edu.cn, Zhang, Hailong3 (AUTHOR) zhanghailong@nwepdi.com, Yang, Shuai3 (AUTHOR) yangshuai@nwepdi.com |
| Source: | Remote Sensing. Sep2024, Vol. 16 Issue 17, p3118. 25p. |
| Subjects: | Earth's orbit, Geosynchronous orbits, Global Positioning System, Magnetic storms, Orbits (Astronomy) |
| Abstract: | The geostationary earth orbit (GEO) represents a distinctive geosynchronous orbit situated in the Earth's equatorial plane, providing an excellent platform for long-term monitoring of ionospheric total electron content (TEC) at a quasi-invariant ionospheric pierce point (IPP). With GEO satellites having limited dual-frequency coverage, the inclined geosynchronous orbit (IGSO) emerges as a valuable resource for ionospheric modeling across a broad range of latitudes. This article evaluates satellite differential code biases (DCB) of BDS high-orbit satellites (GEO and IGSO) and assesses regional ionospheric modeling utilizing data from international GNSS services through a refined polynomial method. Results from a 48-day observation period show a stability of approximately 2.0 ns in BDS satellite DCBs across various frequency signals, correlating with the available GNSS stations and satellites. A comparative analysis between GEO and IGSO satellites in BDS2 and BDS3 reveals no significant systematic bias in satellite DCB estimations. Furthermore, high-orbit BDS satellites exhibit considerable potential for promptly detecting high-resolution fluctuations in vertical TECs compared to conventional geomagnetic activity indicators like Kp or Dst. This research also offers valuable insights into ionospheric responses over mid-latitude regions during the March 2024 geomagnetic storm, utilizing TEC estimates derived from BDS GEO and IGSO satellites. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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