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Mitigation of multipath effect in GNSS short baseline positioning by the multipath hemispherical map

Dong, D. / Wang, M. / Chen, W. / Zeng, Z. / Song, L. / Zhang, Q. / Cai, M. / Cheng, Y. / Lv, J.

Abstract Multipath is one major error source in high-accuracy GNSS positioning. Various hardware and software approaches are developed to mitigate the multipath effect. Among them the MHM (multipath hemispherical map) and sidereal filtering (SF)/advanced SF (ASF) approaches utilize the spatiotemporal repeatability of multipath effect under static environment, hence they can be implemented to generate multipath correction model for real-time GNSS data processing. We focus on the spatial–temporal repeatability-based MHM and SF/ASF approaches and compare their performances for multipath reduction. Comparisons indicate that both MHM and ASF approaches perform well with residual variance reduction (50 %) for short span (next 5 days) and maintains roughly 45 % reduction level for longer span (next 6–25 days). The ASF model is more suitable for high frequency multipath reduction, such as high-rate GNSS applications. The MHM model is easier to implement for real-time multipath mitigation when the overall multipath regime is medium to low frequency.

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Mitigation of multipath effect in GNSS short baseline positioning by the multipath hemispherical map

Dong, D. / Wang, M. / Chen, W. / Zeng, Z. / Song, L. / Zhang, Q. / Cai, M. / Cheng, Y. / Lv, J.

Abstract Multipath is one major error source in high-accuracy GNSS positioning. Various hardware and software approaches are developed to mitigate the multipath effect. Among them the MHM (multipath hemispherical map) and sidereal filtering (SF)/advanced SF (ASF) approaches utilize the spatiotemporal repeatability of multipath effect under static environment, hence they can be implemented to generate multipath correction model for real-time GNSS data processing. We focus on the spatial–temporal repeatability-based MHM and SF/ASF approaches and compare their performances for multipath reduction. Comparisons indicate that both MHM and ASF approaches perform well with residual variance reduction (50 %) for short span (next 5 days) and maintains roughly 45 % reduction level for longer span (next 6–25 days). The ASF model is more suitable for high frequency multipath reduction, such as high-rate GNSS applications. The MHM model is easier to implement for real-time multipath mitigation when the overall multipath regime is medium to low frequency.

Mitigation of multipath effect in GNSS short baseline positioning by the multipath hemispherical map

Dong, D. / Wang, M. / Chen, W. / Zeng, Z. / Song, L. / Zhang, Q. / Cai, M. / Cheng, Y. / Lv, J.

Abstract Multipath is one major error source in high-accuracy GNSS positioning. Various hardware and software approaches are developed to mitigate the multipath effect. Among them the MHM (multipath hemispherical map) and sidereal filtering (SF)/advanced SF (ASF) approaches utilize the spatiotemporal repeatability of multipath effect under static environment, hence they can be implemented to generate multipath correction model for real-time GNSS data processing. We focus on the spatial–temporal repeatability-based MHM and SF/ASF approaches and compare their performances for multipath reduction. Comparisons indicate that both MHM and ASF approaches perform well with residual variance reduction (50 %) for short span (next 5 days) and maintains roughly 45 % reduction level for longer span (next 6–25 days). The ASF model is more suitable for high frequency multipath reduction, such as high-rate GNSS applications. The MHM model is easier to implement for real-time multipath mitigation when the overall multipath regime is medium to low frequency.

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Title:

Mitigation of multipath effect in GNSS short baseline positioning by the multipath hemispherical map

Contributors:

Dong, D. (author) / Wang, M. (author) / Chen, W. (author) / Zeng, Z. (author) / Song, L. (author) / Zhang, Q. (author) / Cai, M. (author) / Cheng, Y. (author) / Lv, J. (author)

Published in:

Journal of Geodesy ; 90

Publication date:

2015

ISSN:

DOI:

https://doi.org/10.1007/s00190-015-0870-9

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Geodäsie , Geodynamik , Zeitschrift , Online-Ressource

Classification:

BKL: 38.73 Geodäsie
RVK: ELIB18 / ELIB41

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