A method for precise point positioning with integer ambiguity resolution using triple-frequency GNSS data
This paper proposes a method for precise point positioning with integer ambiguity resolution (PPP-AR) using triple-frequency global navigation satellite systems (GNSS) data. Firstly, an enhanced linear combination is developed for rapid fixing of the extra wide-lane (EWL) and wide lane (WL) ambiguit...
| Main Authors: | , |
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| Format: | Journal Article |
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Institute of Physics Publishing
2019
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| Online Access: | http://hdl.handle.net/20.500.11937/75970 |
| _version_ | 1848763591658831872 |
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| author | Deo, Manoj El-Mowafy, Ahmed |
| author_facet | Deo, Manoj El-Mowafy, Ahmed |
| author_sort | Deo, Manoj |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This paper proposes a method for precise point positioning with integer ambiguity resolution (PPP-AR) using triple-frequency global navigation satellite systems (GNSS) data. Firstly, an enhanced linear combination is developed for rapid fixing of the extra wide-lane (EWL) and wide lane (WL) ambiguities. This combination has improved performance compared to the Melbourne–Wübbena linear combination, and has 6.7% lower measurement error for the GPS L1/L2 signals, 12.7% lower error for L1/L5, and 0.7% lower error for L2/L5. Comparable improvements were also determined for the Beidou and Galileo constellations. After fixing the EWL/WL ambiguities, a full-rank, triple-frequency carrier-phase-only PPP model is proposed with ionosphere constraints. The probability of AR success rate (Ps) is analysed with the LAMBDA method, using a range of carrier phase and regional ionospheric model (RIM) precisions. Results show that a Ps of 99% is achieved within four epochs of data with carrier phase std = 0.002 m and RIM std = 0.1 total electron content unit (TECU); and within six epochs when RIM std = 0.5 TECU. When the carrier phase std was increased to 0.02 m (depicting high multipath conditions), and with use of a low-precision RIM (std = 0.5 TECU), the proposed method gave significantly improved performance over the method proposed by Li et al (2014 GPS Solut. 18 429–42). The direct estimation of the more challenging narrow-lane (NL) integer ambiguity is analysed by multi-epoch averaging of a proposed geometry-free and ionosphere-free triple-frequency linear combination. Tests with GPS data showed that 65.4% of the NL ambiguities were fixed within 10 min, 90.2% within 20 min, and 95.6% within 30 min. |
| first_indexed | 2025-11-14T11:05:54Z |
| format | Journal Article |
| id | curtin-20.500.11937-75970 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:05:54Z |
| publishDate | 2019 |
| publisher | Institute of Physics Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-759702019-07-09T07:34:36Z A method for precise point positioning with integer ambiguity resolution using triple-frequency GNSS data Deo, Manoj El-Mowafy, Ahmed This paper proposes a method for precise point positioning with integer ambiguity resolution (PPP-AR) using triple-frequency global navigation satellite systems (GNSS) data. Firstly, an enhanced linear combination is developed for rapid fixing of the extra wide-lane (EWL) and wide lane (WL) ambiguities. This combination has improved performance compared to the Melbourne–Wübbena linear combination, and has 6.7% lower measurement error for the GPS L1/L2 signals, 12.7% lower error for L1/L5, and 0.7% lower error for L2/L5. Comparable improvements were also determined for the Beidou and Galileo constellations. After fixing the EWL/WL ambiguities, a full-rank, triple-frequency carrier-phase-only PPP model is proposed with ionosphere constraints. The probability of AR success rate (Ps) is analysed with the LAMBDA method, using a range of carrier phase and regional ionospheric model (RIM) precisions. Results show that a Ps of 99% is achieved within four epochs of data with carrier phase std = 0.002 m and RIM std = 0.1 total electron content unit (TECU); and within six epochs when RIM std = 0.5 TECU. When the carrier phase std was increased to 0.02 m (depicting high multipath conditions), and with use of a low-precision RIM (std = 0.5 TECU), the proposed method gave significantly improved performance over the method proposed by Li et al (2014 GPS Solut. 18 429–42). The direct estimation of the more challenging narrow-lane (NL) integer ambiguity is analysed by multi-epoch averaging of a proposed geometry-free and ionosphere-free triple-frequency linear combination. Tests with GPS data showed that 65.4% of the NL ambiguities were fixed within 10 min, 90.2% within 20 min, and 95.6% within 30 min. 2019 Journal Article http://hdl.handle.net/20.500.11937/75970 Institute of Physics Publishing restricted |
| spellingShingle | Deo, Manoj El-Mowafy, Ahmed A method for precise point positioning with integer ambiguity resolution using triple-frequency GNSS data |
| title | A method for precise point positioning with integer ambiguity resolution using triple-frequency GNSS data |
| title_full | A method for precise point positioning with integer ambiguity resolution using triple-frequency GNSS data |
| title_fullStr | A method for precise point positioning with integer ambiguity resolution using triple-frequency GNSS data |
| title_full_unstemmed | A method for precise point positioning with integer ambiguity resolution using triple-frequency GNSS data |
| title_short | A method for precise point positioning with integer ambiguity resolution using triple-frequency GNSS data |
| title_sort | method for precise point positioning with integer ambiguity resolution using triple-frequency gnss data |
| url | http://hdl.handle.net/20.500.11937/75970 |