Estimating the code bias of bds to improve the performance of multignss precise point positioning

Title:

Estimating the code bias of bds to improve the performance of multignss precise point positioning

Creator:

Jian , Yue, Dongjie, Liu, Zhiqiang , Zhu, Shaolin , and Zhao, Xingwang

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:57b20d45-c1bd-40aa-b6d8-fd154f04c5f4
uuid:57b20d45-c1bd-40aa-b6d8-fd154f04c5f4
doi:10.13168/AGG.2018.0031

Subject:

code bias, empirical mode decomposition, multiple global navigation satellite, systems precise point positioning, positioning accuracy, and convergence time

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

An empirical mode decomposition (EMD) model for BeiDou Navigation Satellite System (BDS) code bias has been established upon the observation model of multiple global navigation satellite systems (multi-GNSS). To validate the correctness and effectiveness of the model, seven days from day of year (DOY) 213-219, 2015 from eight Multi-GNSS Experiment (MGEX) stations were processed. Results show that after code bias correction, the standard deviation of the multipath combination (MP) series on B1 and B2 frequencies decreased by 38.63 % and 17.4 %, respectively. The timespan needed for convergence in BDS precise point positioning (PPP) was improved by 7.9 % after inclined geosynchronous orbit (IGSO) and medium earth orbit (MEO) code bias correction, and another improvement of 11.4 % was generated by applying geostationary orbit (GEO) code bias correction. Despite the improvement of convergence time, the accuracy of the single-day solution barely increased for PPP in multi-GNSS as compared to the single GNSS. A continuous decrease in percentage along with prolonged timespan for PPP convergence was observed with increasing cut-off elevation angle. However, the performance of multi-GNSS PPP, which was superior to that of the single GNSS, shows that it is extremely valuable for practical applications in mountainous or sheltered areas.

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

Acta geodynamica et geomaterialia : | 2018 Volume:15 | Number:4 (192)

Harvested from:

CDK

Metadata only:

false