BeiDou Geostationary Satellite Code Bias Modeling Using Fengyun-3C Onboard Measurements
This study validated and investigated elevation- and frequency-dependent systematic biases observed in ground-based code measurements of the Chinese BeiDou navigation satellite system, using the onboard BeiDou code measurement data from the Chinese meteorological satellite Fengyun-3C. Particularly f...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/17/11/2460 |
| _version_ | 1811184606593941504 |
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| author | Kecai Jiang Min Li Qile Zhao Wenwen Li Xiang Guo |
| author_facet | Kecai Jiang Min Li Qile Zhao Wenwen Li Xiang Guo |
| author_sort | Kecai Jiang |
| collection | DOAJ |
| description | This study validated and investigated elevation- and frequency-dependent systematic biases observed in ground-based code measurements of the Chinese BeiDou navigation satellite system, using the onboard BeiDou code measurement data from the Chinese meteorological satellite Fengyun-3C. Particularly for geostationary earth orbit satellites, sky-view coverage can be achieved over the entire elevation and azimuth angle ranges with the available onboard tracking data, which is more favorable to modeling code biases. Apart from the BeiDou-satellite-induced biases, the onboard BeiDou code multipath effects also indicate pronounced near-field systematic biases that depend only on signal frequency and the line-of-sight directions. To correct these biases, we developed a proposed code correction model by estimating the BeiDou-satellite-induced biases as linear piece-wise functions in different satellite groups and the near-field systematic biases in a grid approach. To validate the code bias model, we carried out orbit determination using single-frequency BeiDou data with and without code bias corrections applied. Orbit precision statistics indicate that those code biases can seriously degrade single-frequency orbit determination. After the correction model was applied, the orbit position errors, 3D root mean square, were reduced from 150.6 to 56.3 cm. |
| first_indexed | 2024-04-11T13:15:11Z |
| format | Article |
| id | doaj.art-c491ca1a9b0f4c53b794c362582d12c7 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T13:15:11Z |
| publishDate | 2017-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-c491ca1a9b0f4c53b794c362582d12c72022-12-22T04:22:25ZengMDPI AGSensors1424-82202017-10-011711246010.3390/s17112460s17112460BeiDou Geostationary Satellite Code Bias Modeling Using Fengyun-3C Onboard MeasurementsKecai Jiang0Min Li1Qile Zhao2Wenwen Li3Xiang Guo4GNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, ChinaGNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, ChinaGNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, ChinaGNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, ChinaGNSS Research Center, Wuhan University, 129 Luoyu Road, Wuhan 430079, ChinaThis study validated and investigated elevation- and frequency-dependent systematic biases observed in ground-based code measurements of the Chinese BeiDou navigation satellite system, using the onboard BeiDou code measurement data from the Chinese meteorological satellite Fengyun-3C. Particularly for geostationary earth orbit satellites, sky-view coverage can be achieved over the entire elevation and azimuth angle ranges with the available onboard tracking data, which is more favorable to modeling code biases. Apart from the BeiDou-satellite-induced biases, the onboard BeiDou code multipath effects also indicate pronounced near-field systematic biases that depend only on signal frequency and the line-of-sight directions. To correct these biases, we developed a proposed code correction model by estimating the BeiDou-satellite-induced biases as linear piece-wise functions in different satellite groups and the near-field systematic biases in a grid approach. To validate the code bias model, we carried out orbit determination using single-frequency BeiDou data with and without code bias corrections applied. Orbit precision statistics indicate that those code biases can seriously degrade single-frequency orbit determination. After the correction model was applied, the orbit position errors, 3D root mean square, were reduced from 150.6 to 56.3 cm.https://www.mdpi.com/1424-8220/17/11/2460BeiDou code biasesFengyun-3Conboard BeiDousingle-frequency orbit determination |
| spellingShingle | Kecai Jiang Min Li Qile Zhao Wenwen Li Xiang Guo BeiDou Geostationary Satellite Code Bias Modeling Using Fengyun-3C Onboard Measurements Sensors BeiDou code biases Fengyun-3C onboard BeiDou single-frequency orbit determination |
| title | BeiDou Geostationary Satellite Code Bias Modeling Using Fengyun-3C Onboard Measurements |
| title_full | BeiDou Geostationary Satellite Code Bias Modeling Using Fengyun-3C Onboard Measurements |
| title_fullStr | BeiDou Geostationary Satellite Code Bias Modeling Using Fengyun-3C Onboard Measurements |
| title_full_unstemmed | BeiDou Geostationary Satellite Code Bias Modeling Using Fengyun-3C Onboard Measurements |
| title_short | BeiDou Geostationary Satellite Code Bias Modeling Using Fengyun-3C Onboard Measurements |
| title_sort | beidou geostationary satellite code bias modeling using fengyun 3c onboard measurements |
| topic | BeiDou code biases Fengyun-3C onboard BeiDou single-frequency orbit determination |
| url | https://www.mdpi.com/1424-8220/17/11/2460 |
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