Analysis of the Influence of Geomagnetic Storms on the Ionospheric Model of Beidou/GPS System

Lecture Notes in Electrical Engineering - China Satellite Navigation Conference (CSNC) 2016 Proceedings: Volume I ◽

10.1007/978-981-10-0934-1_43 ◽

2016 ◽

pp. 503-510 ◽

Cited By ~ 1

Author(s):

Xing Li ◽

Hongliang Cai ◽

Dong Li ◽

Changjiang Geng ◽

Liang Chen ◽

...

Keyword(s):

Geomagnetic Storms ◽

Ionospheric Model ◽

Gps System

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The Design of GPS Digital IF Signal Simulator

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.490-495.1631 ◽

2012 ◽

Vol 490-495 ◽

pp. 1631-1635

Author(s):

Bei Zhang

Keyword(s):

Carrier Phase ◽

Sampling Rate ◽

Intermediate Frequency ◽

Propagation Delay ◽

Ionospheric Model ◽

Research Development ◽

Matlab Simulation ◽

Gps Navigation ◽

Matlab Implementation ◽

Gps System

This paper focuses on the study of digital IF signal simulator's Matlab implementation on the basis of GPS system and GPS navigation signal simulator.It includes the simulator's parameter settings (such as the sampling rate,intermediate frequency), then calculates the sampling signal's code phase and carrier phase by determining the signal's propagation delay. In addition,it introduces and simulates the ionospheric model and the tropospheric model,and corrects the sampling signal's code phase and carrier phase.This paper realizes GPS digital IF signal simulator's Matlab simulation,thus it provides the supporting platform for research,development and testing of the GPS receiver's new algorithm

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Performance of BDS Navigation Ionospheric Model During the Main Phase of Different Classified Geomagnetic Storms in China Region

Radio Science ◽

10.1029/2019rs007033 ◽

2020 ◽

Vol 55 (4) ◽

Author(s):

Junchen Xue ◽

Marcio Aquino ◽

Sreeja Vadakke Veettil ◽

Xiaogong Hu ◽

Lin Quan

Keyword(s):

Geomagnetic Storms ◽

Main Phase ◽

Ionospheric Model ◽

China Region

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Klobuchar, NeQuick G, and EGNOS Ionospheric Models for GPS/EGNOS Single-Frequency Positioning under 6–12 September 2017 Space Weather Events

Applied Sciences ◽

10.3390/app10051553 ◽

2020 ◽

Vol 10 (5) ◽

pp. 1553 ◽

Cited By ~ 1

Author(s):

Adam Ciećko ◽

Grzegorz Grunwald

Keyword(s):

Geomagnetic Storm ◽

Geomagnetic Storms ◽

Global Navigation Satellite Systems ◽

Single Frequency ◽

Ionospheric Model ◽

International Gnss Service ◽

Satellite Systems ◽

L1 Data ◽

Ionospheric Models ◽

The Impact

The ionosphere is one of the main factors affecting the accuracy of global navigation satellite systems (GNSS). It is a dispersive medium for radio signals, and for multi-frequency receivers, most of its effect can be removed. The problem is for the single-frequency devices, which must rely on a correction model. The motivation of this paper is the adoption of different ionospheric models in GPS/EGNOS (Global Positioning System/European Geostationary Navigation Overlay Service) positioning to mitigate the impact of geomagnetic storms. The aim of this article is to examine the accuracy of GPS/EGNOS single-frequency positioning. In all the examined solutions, GPS L1 data augmented with the EGNOS clock and ephemeris corrections were used in position calculation. The changes were only made to the ionospheric model. The examined scenarios are as follows: without any model (off), Klobuchar, NeQuick G, and EGNOS model. The analysed period is 6–12 September 2017, during which the last strong geomagnetic storm took place. In order to perform a reliable analysis, the study was conducted at three International GNSS Service (IGS) stations in different geographical latitudes, within the EGNOS APV-1 (Approach with Vertical Guidance) availability border. The obtained results prove that the EGNOS ionospheric model meets the aviation positioning accuracy criteria for the APV-1 approach during the studied geomagnetic storm. The EGNOS average horizontal positioning error of 0.75 m was on average almost two times lower than the other solutions. For vertical positioning, the EGNOS error of 0.93 m proved to be two times lower than those of the Klobuchar and NeQuick G models, while it was more than three times lower for the off solution.

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