Ionospheric slant total electron content determination from multi-frequency GNSS signals carrier-phase measurements

Pudlovskiy, Vladimir

doi:10.1117/12.2603477

Cited by 2 publications

(6 citation statements)

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“…To exclude the influence of DCB and models of its change in space and time on the error of STEC estimation, a method of its estimation based only on processing in GR of phase simultaneous measurements of different frequency ranges by signals of two (or more) NS is proposed [7]. The proposed method of slant PES estimation is based on the hypothesis that this TEC value is identical for signal propagation paths from two NSs having close angular position relative to GR, for example with difference of elevation and azimuth angles for two NS's less than 1° [7,8].…”

Section: Analysis Of Tec Determination Methodsmentioning

confidence: 99%

“…Continuing the research begun in [7], the objectives of this work were to test the method on the GNSS GLONASS signals under different conditions of ionospheric disturbances, as well as to assess the ambiguity of the obtained signal delays in the ionosphere and TEC in comparison with data from other sources.…”

Section: Analysis Of Tec Determination Methodsmentioning

confidence: 99%

“…The proposed method of STEC estimation is based on hypothesis about identity of this STEC value for radio signal propagation paths from two NS's having close angular position relative to GR, for example with difference of elevation and azimuth angles for two NS's less than 1° as shown in [7,8]. Then, for j-th and k-th NS at moment t1, when the sighting angles of these NSAs coincide, based on (1) we can write:…”

Section: Basic Provisions Of the Proposed Methods Of Tec Estimationmentioning

confidence: 99%

“…For this reason, TEC estimation based on dual-band code measurements of GLONASS signals may contain an additional methodological error, which will also increase the value of DCB. Estimation of slant TEC on the basis of processing in GR only phase simultaneous measurements in different frequency bands by signals of two (or more) NS [7] allows to minimize the influence of DCB.…”

Section: Features Of Processing Dual-frequency Glonass Signalsmentioning

confidence: 99%

“…On the other hand, the ballistic construction of the GLONASS orbital constellation guarantees the possibility of repeated observations during a day of two NS of this system with close sighting angles, which is necessary to implement the proposed in [7] method of processing only phase measurements in different frequency bands on the GNSS signals.…”

Section: Features Of Processing Dual-frequency Glonass Signalsmentioning

confidence: 99%

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Features of estimating ionospheric delay from carrier phase observations of dual-frequency GLONASS signals

Pudlovskiy

2022

28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

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Signals processing of global navigation satellite systems (GNSS) make it possible to estimate delay due to refraction in the ionosphere, as well as the ionospheric total electronic content (TEC). Most of used the ionospheric delay estimation methods are based on processing joint measurements by code and carrier phase in two bands of signals from a navigation satellite. For these methods it is necessary to estimate the value of systematic errors associated with different signal delays in different frequency bands in the radio frequency path of the transmitter satellite and receiver navigation equipment, called differential code biases (DCB). The paper describes the features of the implementation of the method of processing only synchronous phase measurements in different frequency ranges by signals from two GLONASS satellites. The proposed method allows to exclude the influence of DCB on the error of navigation signal delay estimation due to refraction in the ionosphere. An important condition for the implementation of the method is the possibility of observing two satellites with close viewing angles relative to the receiver. The composition of the sources of uncertainty of the obtained estimates of the delay in the ionosphere and TEC is given.

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Section: Analysis Of Tec Determination Methodsmentioning

confidence: 99%

Section: Analysis Of Tec Determination Methodsmentioning

confidence: 99%

Section: Basic Provisions Of the Proposed Methods Of Tec Estimationmentioning

confidence: 99%

Section: Features Of Processing Dual-frequency Glonass Signalsmentioning

confidence: 99%

Section: Features Of Processing Dual-frequency Glonass Signalsmentioning

confidence: 99%

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