Development of a GPS codeless receiver for ionospheric calibration and time transfer

Lee, Chang Bok; Lee, Dong Doo; Chung, Nak Sam; Chang, Ik Soo; Kawai, Eiji; Takahashi, Fumiyuki

doi:10.1109/19.278610

Cited by 4 publications

(1 citation statement)

References 3 publications

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“…GPS data can be classified into code-phase and carrier-phase measurements. As the code pseudo-range has a lower accuracy, information about the absolute TEC of the ionosphere that is obtained using the code pseudo-range alone usually has a low accuracy as well [33,34]. Alternatively, due to the inclusion of integer-ambiguity parameters for two frequencies, the carrier-phase measurement can only obtain information about the relative TEC of the ionosphere [35].…”

Section: Ionospheric Tec Information Extracted From Dual-frequency Gpmentioning

confidence: 99%

Global Ionospheric Model Accuracy Analysis Using Shipborne Kinematic GPS Data in the Arctic Circle

et al. 2019

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The global ionospheric model built by the International Global Navigation Satellite System (GNSS) Service (IGS) using GNSS reference stations all over the world is currently the most widely used ionospheric product on a global scale. Therefore, analysis and evaluation of this ionospheric product’s accuracy and reliability are essential for the practical use of the product. In contrast to the traditional way of assessing global ionospheric models with ground-based static measurements, our study used shipborne kinematic global positioning system (GPS) measurements collected over 18 days to perform a preliminary analysis and evaluation of the accuracy of the global ionospheric models; our study took place in the Arctic Circle. The data from the International GNSS Service stations near the Arctic Circle were used to verify the ionospheric total electron contents derived from the kinematic data. The results suggested that the global ionospheric model had an approximate regional accuracy of 12 total electron content units (TECu) within the Arctic Circle and deviated from the actual ionospheric total electron content value by about 4 TECu.

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Section: Ionospheric Tec Information Extracted From Dual-frequency Gpmentioning

confidence: 99%

Global Ionospheric Model Accuracy Analysis Using Shipborne Kinematic GPS Data in the Arctic Circle

et al. 2019

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Study of a New GPS-Carriers Based Time Reference with High Instantaneous Accuracy

Caciotta

Leccese

Piuzzi

2007

2007 8th International Conference on Electronic Measurement and Instruments

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A possibility to obtain a new time reference constantly locked to the Caesium-derived GPS satellites carriers was investigated by means of a new GPS receiver architecture able to lock the two GPS carriers and mix them to obtain a reference frequency with an accuracy close to the GPS one. This is very important in Perceived Power Quality distributed measurements systems where the exact knowledge of the events on the geographic compass is strongly joined to the capability to associate them an accurate time. A simulation of the carrier tracking loop has been performed. It shows how choosing appropriately the frequency of the low-pass filter of Costas loop, a modified PLL typically used \ud in GPS system, it is possible to recover carriers in presence of high noise to signal ratio too. The front-end of the system able to select GPS frequencies, which is the first block of the entire system, was also realized

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Improving Estimation of Vehicle's Trajectory Using the Latest Global Positioning System With Kalman Filtering

Barrios

Motai

2011

IEEE Trans. Instrum. Meas.

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Development of a GPS codeless receiver for ionospheric calibration and time transfer

Cited by 4 publications

References 3 publications

Global Ionospheric Model Accuracy Analysis Using Shipborne Kinematic GPS Data in the Arctic Circle

Global Ionospheric Model Accuracy Analysis Using Shipborne Kinematic GPS Data in the Arctic Circle

Study of a New GPS-Carriers Based Time Reference with High Instantaneous Accuracy

Improving Estimation of Vehicle's Trajectory Using the Latest Global Positioning System With Kalman Filtering

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