Reduction of Multipath Effect in GNSS Positioning by Applying Pseudorange Acceleration as Weight
A novel approach is proposed to mitigate the multipath effect that is considered a major source of error in global navigation satellite system (GNSS) positioning in urban areas. We utilize code pseudorange acceleration measurements as a weight in a least squares estimation process. If GNSS signals a...
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MDPI AG
2024-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/24/21/6880 |
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| author | Kwan-Dong Park Woong-Jun Yoon Jong-Sung Lee |
| author_facet | Kwan-Dong Park Woong-Jun Yoon Jong-Sung Lee |
| author_sort | Kwan-Dong Park |
| collection | DOAJ |
| description | A novel approach is proposed to mitigate the multipath effect that is considered a major source of error in global navigation satellite system (GNSS) positioning in urban areas. We utilize code pseudorange acceleration measurements as a weight in a least squares estimation process. If GNSS signals are reflected off a surrounding surface, they cause large variations in the recorded pseudorange measurement. Accelerations computed at each epoch with three consecutive pseudoranges exhibit significant fluctuations in a multipath signal. As a result, positioning accuracy improved by 75% horizontally and 79% vertically compared to not applying any weight. Even when multipath errors exist, the range acceleration (RA) value is sometimes low at many epochs. When a threshold value for the signal-to-noise ratio was additionally applied besides RA, the positioning accuracy at two test sites (including a deep urban environment) improved by more than 80% in both horizontal and vertical directions. |
| format | Article |
| id | doaj-art-c1c79e00a5454470a7bac0b4ab1b3fa5 |
| institution | OA Journals |
| issn | 1424-8220 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
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| series | Sensors |
| spelling | doaj-art-c1c79e00a5454470a7bac0b4ab1b3fa52025-08-20T02:13:15ZengMDPI AGSensors1424-82202024-10-012421688010.3390/s24216880Reduction of Multipath Effect in GNSS Positioning by Applying Pseudorange Acceleration as WeightKwan-Dong Park0Woong-Jun Yoon1Jong-Sung Lee2Department of Geoinformatic Engineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of KoreaDepartment of Geoinformatic Engineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of KoreaDepartment of Geoinformatic Engineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of KoreaA novel approach is proposed to mitigate the multipath effect that is considered a major source of error in global navigation satellite system (GNSS) positioning in urban areas. We utilize code pseudorange acceleration measurements as a weight in a least squares estimation process. If GNSS signals are reflected off a surrounding surface, they cause large variations in the recorded pseudorange measurement. Accelerations computed at each epoch with three consecutive pseudoranges exhibit significant fluctuations in a multipath signal. As a result, positioning accuracy improved by 75% horizontally and 79% vertically compared to not applying any weight. Even when multipath errors exist, the range acceleration (RA) value is sometimes low at many epochs. When a threshold value for the signal-to-noise ratio was additionally applied besides RA, the positioning accuracy at two test sites (including a deep urban environment) improved by more than 80% in both horizontal and vertical directions.https://www.mdpi.com/1424-8220/24/21/6880GNSSmultipathrange accelerationsignal-to-noise ratio (SNR)weight model |
| spellingShingle | Kwan-Dong Park Woong-Jun Yoon Jong-Sung Lee Reduction of Multipath Effect in GNSS Positioning by Applying Pseudorange Acceleration as Weight Sensors GNSS multipath range acceleration signal-to-noise ratio (SNR) weight model |
| title | Reduction of Multipath Effect in GNSS Positioning by Applying Pseudorange Acceleration as Weight |
| title_full | Reduction of Multipath Effect in GNSS Positioning by Applying Pseudorange Acceleration as Weight |
| title_fullStr | Reduction of Multipath Effect in GNSS Positioning by Applying Pseudorange Acceleration as Weight |
| title_full_unstemmed | Reduction of Multipath Effect in GNSS Positioning by Applying Pseudorange Acceleration as Weight |
| title_short | Reduction of Multipath Effect in GNSS Positioning by Applying Pseudorange Acceleration as Weight |
| title_sort | reduction of multipath effect in gnss positioning by applying pseudorange acceleration as weight |
| topic | GNSS multipath range acceleration signal-to-noise ratio (SNR) weight model |
| url | https://www.mdpi.com/1424-8220/24/21/6880 |
| work_keys_str_mv | AT kwandongpark reductionofmultipatheffectingnsspositioningbyapplyingpseudorangeaccelerationasweight AT woongjunyoon reductionofmultipatheffectingnsspositioningbyapplyingpseudorangeaccelerationasweight AT jongsunglee reductionofmultipatheffectingnsspositioningbyapplyingpseudorangeaccelerationasweight |