M_DCB: Matlab code for estimating GNSS satellite and receiver differential code biases

Jin, Rui; Jin, Shuanggen; Feng, Gao

doi:10.1007/s10291-012-0279-3

Cited by 151 publications

(101 citation statements)

References 6 publications

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“…where, denote the integer phase ambiguities, and, λ 1 , λ 2 are the wavelengths that correspond to ƒ 1 and ƒ 2 frequencies, respectively (Komjathy 1997;Liao 2000;Leick 2004;Dach et al 2007;Jin et al 2012).…”

Section: Obtaining Tec Data From Gnss Observationsmentioning

confidence: 99%

“…Thus Φ 4 data are usually fitted to the P 4 to smooth the P 4 observations by taking advantage of less noisy carrier-phase measurements. Several fitting algorithms have been proposed in the literature (Lanyi and Roth 1988;Jakowski et al 1996;Komjathy and Langley 1996;Otsuka et al 2002;Jin et al 2012). Leveling or fitting of Φ 4 to P 4 is usually achieved by defining a constant offset for each continuous arc of phase measurement as follows:…”

Section: Obtaining Tec Data From Gnss Observationsmentioning

confidence: 99%

“…The unknown DCB values of the stations can also be estimated as daily constants via using the regional VTEC modeling based on spherical harmonic functions (Jin et al 2012). Jin et al (2012) th order for the regional, continental, and global size, respectively.…”

Section: Obtaining Tec Data From Gnss Observationsmentioning

confidence: 99%

See 2 more Smart Citations

Observed TEC Anomalies by GNSS Sites Preceding the Aegean Sea Earthquake of 2014

Yalçınkaya¹

2016

JGG

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Section: Obtaining Tec Data From Gnss Observationsmentioning

confidence: 99%

Section: Obtaining Tec Data From Gnss Observationsmentioning

confidence: 99%

See 1 more Smart Citation

Observed TEC Anomalies by GNSS Sites Preceding the Aegean Sea Earthquake of 2014

Yalçınkaya¹

2016

JGG

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show abstract

“…As claimed in Section 2, the t IFB could also be calculated, so in Table 4 one day's mean receiver hardware delay deviations at each station are listed in the second column named Method One. In order to check the estimates, the t IFB of each station is also computed by the method put forward by Jin which is based on the least squares method (Jin et al, 2012) and is listed in the third column named Method Two. The two estimates show good agreement with a mean difference of less than 0·5 ns.…”

Section: P E R Fo R M a N C E A N A Ly S I S O F I O N O S P H E R Ementioning

confidence: 99%

Performance Analysis of Ionosphere Monitoring with BeiDou CORS Observational Data

Tang

Jin

2014

J. Navigation

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This paper focuses on the performance analysis of ionosphere monitoring using the measurements from a BeiDou Continuously Operating Reference Stations (CORS) network. Combined pseudo-range and carrier phase observations are used to estimate total electron content (TEC) and the hardware delay deviation is also computed. Using the observations from five BeiDou CORS in China, the TEC monitoring results were obtained from each station and compared with GPS monitoring results and also those from the Global Ionosphere Maps (GIM) model. Numerical computation shows that the BeiDou system has the ability to precisely detect the TEC diurnal variation trend on each station. The Residual Mean Square (RMS) difference between the BeiDou and the GIM model at a higher latitude station is about four TEC Units (TECU), while the RMS difference between the GPS and the GIM is about three TECU; at a lower latitude station this difference increases to six

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“…In past studies on BeiDou, the investigation mainly focused on satellite visibility, validity of measurements, carrier-to-noise density ratio (C/N 0 ), code noise and positioning results analysis. [4][5][6][7][8] Extensive research has also been conducted on position dilution of precision (PDOP). [9][10][11][12][13] Multipath error seriously affects the precision in high-precision GPS applications, and some articles have analyzed multipath error and detection methods.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of GPS/BeiDou Integration Positioning Performance

Zhang

Liu

et al. 2015

Trans. Japan Soc. Aero. S Sci.

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As a new global navigation system, BeiDou has formally been in operation in the Asian region since December 27, 2012. To evaluate its positioning performance, several days' observation data were collected using a global positioning system (GPS)/BeiDou receiver in Shanghai. In this paper, the constellation and signals of BeiDou are first reviewed. Carrier-to-noise density ratio (C/N 0 ) and multipath combinations are analyzed, then multipath errors of GPS satellites and BeiDou satellites were compared in terms of elevation angle. A positioning performance comparison of three scenarios was conducted using three indicators including number of visible satellites (NVS), position dilution of precision (PDOP), and accuracy of positioning. All positioning results were solved using a single-point positioning mode. After six months of adjustment, comparison of the positioning performance before BeiDou began providing regional services, there were some significant improvements in performance. The accuracy requirements published before formal operation, in which positioning accuracy is less than 10 m, was met. The results show that the integration system has a large NVS, low PDOP value, and a high level of accuracy and precision. The positioning performance can be improved after using BeiDou, especially under the conditions of urban environment.

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M_DCB: Matlab code for estimating GNSS satellite and receiver differential code biases

Cited by 151 publications

References 6 publications

Observed TEC Anomalies by GNSS Sites Preceding the Aegean Sea Earthquake of 2014

Observed TEC Anomalies by GNSS Sites Preceding the Aegean Sea Earthquake of 2014

Performance Analysis of Ionosphere Monitoring with BeiDou CORS Observational Data

Evaluation of GPS/BeiDou Integration Positioning Performance

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