Print Email Facebook Twitter A modified carrier-to-code leveling method for retrieving ionospheric observables and detecting short-term temporal variability of receiver differential code biases Title A modified carrier-to-code leveling method for retrieving ionospheric observables and detecting short-term temporal variability of receiver differential code biases Author Zhang, Baocheng (Chinese Academy of Sciences) Teunissen, P.J.G. (TU Delft Mathematical Geodesy and Positioning; Curtin University) Yuan, Yunbin (Chinese Academy of Sciences) Zhang, Xiao (Chinese Academy of Sciences) Li, Min (Chinese Academy of Sciences) Date 2018-03-21 Abstract Sensing the ionosphere with the global positioning system involves two sequential tasks, namely the ionospheric observable retrieval and the ionospheric parameter estimation. A prominent source of error has long been identified as short-term variability in receiver differential code bias (rDCB). We modify the carrier-to-code leveling (CCL), a method commonly used to accomplish the first task, through assuming rDCB to be unlinked in time. Aside from the ionospheric observables, which are affected by, among others, the rDCB at one reference epoch, the Modified CCL (MCCL) can also provide the rDCB offsets with respect to the reference epoch as by-products. Two consequences arise. First, MCCL is capable of excluding the effects of time-varying rDCB from the ionospheric observables, which, in turn, improves the quality of ionospheric parameters of interest. Second, MCCL has significant potential as a means to detect between-epoch fluctuations experienced by rDCB of a single receiver. Subject Global positioning system (GPS)IonosphereModified carrier-to-code leveling (MCCL)Receiver differential code bias (rDCB)Vertical total electron content (vTEC) To reference this document use: http://resolver.tudelft.nl/uuid:2c4c2cff-ca09-432c-998d-2bacbca55ad9 DOI https://doi.org/10.1007/s00190-018-1135-1 Embargo date 2018-09-21 ISSN 0949-7714 Source Journal of Geodesy, 93, 19–28 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2018 Baocheng Zhang, P.J.G. Teunissen, Yunbin Yuan, Xiao Zhang, Min Li Files PDF Zhang2019_Article_AModifi ... Leveli.pdf 4.08 MB Close viewer /islandora/object/uuid:2c4c2cff-ca09-432c-998d-2bacbca55ad9/datastream/OBJ/view