POSITIONAL ACCURACY ASSESSMENT USING SINGLE AND MULTI-GNSS

Garcia, H. H.; Mercurio, M. E.; Noveloso, D. P.; Reyes, R. B.

Global Navigation Satellite System (GNSS) provides users worldwide with a three-dimensional positioning, velocity and time solution 24-hour service using transmitted radio signals from orbiting satellites in space. Dependency on the number of satellites available during observation can improve satellite geometry and increase redundancy which be a factor for the quality of GNSS positioning result. Each position derived from different combinations of satellite systems were evaluated aside from using GPS only. The test is conducted by single and relative positioning method using survey grade receivers. Post-processing of GNSS data were processed in an open source software, RTKLIB, getting the RMS and 2DRMS of each position derived from different combination. The resulting satellite system combination for single positioning for horizontal were better considering the inclusion of GPS and BeiDou. However, position accuracy degrades when the inclusion of GLONASS and/or GALILEO during the processing. For relative positioning, position derived from the inclusion of GALILEO, BeiDou and QZSS degrades the results. For height results in single positioning method, the displacement from the mean value is about 4.00 meters which is derived from Galileo only satellite system.

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Garcia, H. H. / Mercurio, M. E. / Noveloso, D. P. / et al: POSITIONAL ACCURACY ASSESSMENT USING SINGLE AND MULTI-GNSS. 2019. Copernicus Publications.

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