Satellite availability and positioning performance of uncombined precise point positioning using BeiDou-2 and BeiDou-3 multi-frequency signals

Cao, Xinyun; Shen, Fei; Zhang, Shoujian; Li, Jiancheng

doi:10.1016/j.asr.2020.11.011

Cited by 17 publications

(9 citation statements)

References 33 publications

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“…When the results of BDS-3 IGSO satellites are reviewed, it is discovered that the com analysis center has the fewest BDS-3 IGSO satellites (2.5). Deficiencies in the number of satellites in the analysis centers have a negative impact on position accuracy [13,14]. The BDS-3 IGSO satellite numbers (2.9/3.0) determined from the gbm and wum analysis centers were quite similar.…”

Section: Resultsmentioning

confidence: 89%

“…Since the ultra-rapid clock file was not produced by the analysis centers, its table could not be prepared. More detailed information about GNSS satellite systems is given in reference [13].…”

Section: Methodsmentioning

confidence: 99%

“…BeiDou satellites are divided into three phases (BDS-1, BDS-2, and BDS-3), with BDS-3 satellites serving worldwide purposes [5]. Aside from global-purpose GNSS navigation satellites, there are certain regional navigation satellites.…”

Section: Introductionmentioning

confidence: 99%

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GNSS yörünge ve saat dosyalarının doluluk analizi

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Alçay

Konukseven

et al. 2022

ECJSE

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Bu çalışmada 2021 yılına ait bir yıllık periyodu içeren son, hızlı ve ultra hızlı yörünge (sp3) ve saat dosyalarının GPS, GLONASS, Galileo, Beidou-2, BeiDou-3 ve QZSS uydu sayısı doluluk analizleri ücretsiz yayınlanan bütün analiz merkezleri için gerçekleştirilmiştir. Ayrıca yörünge dosyasında mevcut olmayan uydu saat hatalarının oranı da bütün analiz merkezleri için hesaplanmıştır. Yapılan analizler sonucunda, GPS ve GLONASS uydu sayılarının analiz merkezleri arasında önemli oranda değişmediği, Galileo ve BeiDou uydu sayılarının ise analiz merkezleri arasında önemli değişiklikler gösterdiği görülmüştür. En az Galileo uydu sayısı son, hızlı ve ultra-hızlı yörünge ürünleri için sırası ile CNES (son), GFZ (hızlı) ve GFZ (ultra) analiz merkezlerinden elde edilmiştir. BeiDou-3 (MEO) ve QZSS uyduları için en az uydu sayısı son yörünge dosyaları içinden CODE analiz merkezi için hesaplanmıştır.

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Section: Resultsmentioning

confidence: 89%

Section: Methodsmentioning

confidence: 99%

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GNSS yörünge ve saat dosyalarının doluluk analizi

Öğütçü

Alçay

Konukseven

et al. 2022

ECJSE

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“…The precise positioning performance of QZSS and GPS in the Asia-Pacific region was investigated by Li [19]. The positioning performance of BDS-2/BDS-3 in the Asia-Pacific region was analyzed by Cao et al [20]. It can be seen that the previous studies about PPP in the Asia-Pacific region are mainly focused on single or dual systems, while the PPP performance of multi-GNSS in the Asia-Pacific region is still limited.…”

Section: Introductionmentioning

confidence: 99%

Performance of Multi-GNSS in the Asia-Pacific Region: Signal Quality, Broadcast Ephemeris and Precise Point Positioning (PPP)

Huang

Wang

et al. 2022

Remote Sensing

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Since BeiDou Navigation Satellite System (BDS) and Japan’s Quasi-Zenith Satellite System (QZSS) have more visible satellites in the Asia-Pacific region, and navigation satellites of Global Positioning System (GPS), Galileo satellite navigation system (Galileo), and GLONASS satellite navigation system (GLONASS) are uniformly distributed globally, the service level of multi-mode Global Navigation Satellite System (GNSS) in the Asia-Pacific region should represent the best service capability. Based on the observation data of 10 Multi-GNSS Experiment (MGEX) stations, broadcast ephemeris and precision ephemeris from 13 to 19 October 2021, this paper comprehensively evaluated the service capability of multi-GNSS in the Asia-Pacific region from three aspects of observation data quality, broadcast ephemeris performance, and precision positioning level. The results show that: (1) the carrier-to-noise-density ratio (C/N0) quality of the GPS and Galileo is the best, followed by BDS and GLONASS, and QZSS is the worst. GPS, BDS-2, GLONASS, and QZSS pseudorange multipath values range from 0 to 0.6 m, while Galileo system and BDS-3 pseudorange multipath values range from 0 to 0.8 m. (2) In terms of broadcast ephemeris accuracy, BDS-3 broadcast ephemeris has the best orbit, and the three-dimensional (3D) Root Mean Square (RMS) is 0.21 m; BDS-2 was the worst, with a 3D RMS of 1.99 m. The broadcast ephemeris orbits of GPS, Galileo, QZSS, and GLONASS have 3D RMS of 0.60 m, 0.62 m, 0.83 m, and 1.27 m, respectively. For broadcast ephemeris clock offset: Galileo has the best performance, 0.61 ns, GLONASS is the worst, standard deviation (STD) is 3.10 ns, GPS, QZSS, BDS-3 and BDS-2 are 0.65 ns, 0.75 ns, and 1.72 ns, respectively. For signal-in-space ranging errors (SISRE), the SISRE results of GPS and Galileo systems are the best, fluctuating in the range of 0 m–2 m, followed by QZSS, BDS-3, Galileo, and BDS-2. (3) GPS, BDS, GLONASS, Galileo, GPS/QZSS, and BDS/QZSS were used for positioning experiments. In static PPP, the convergence time and positioning accuracy of GPS show the best performance. The positioning accuracy of GPS/QZSS and BDS/QZSS is improved compared with that of GPS and BDS. In terms of kinematic PPP, the convergence time and positioning accuracy of GPS/QZSS and BDS/QZSS are improved compared with that of GPS and BDS. In addition to GLONASS and Galileo systems, the other combinations outperformed 3 cm, 3 cm, and 5 cm in the east, north, and up directions.

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“…In recent years, numerous research projects have been conducted on the BDS-3 precise clock estimation [ 17 , 18 , 19 ], time group delay (TGD)/differential code bias (DCB) [ 20 , 21 ], PPP-B2b signal evaluation [ 22 , 23 , 24 ], and satellite availability [ 25 , 26 ]. Whether from the composition of the signal or the signal propagation, positioning is fundamental.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Precise Point Positioning for BeiDou-3 B1c/B2a Signals in the Global Range

Wang

Yang

Wang

et al. 2021

Sensors

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With the construction and development of the BeiDou navigation satellite system (BDS), the precise point positioning (PPP) performance of the BDS is worthy of research. In this study, observational data from 17 stations around the world across 20 days are used to comprehensively evaluate the PPP performance of BDS B1c/B2a signals. For greater understanding, the results are also compared with the Global Positioning System (GPS) and BDS PPP performance of different signals and system combinations. The evaluation found root mean square (RMS) values of the static PPP in the north (N), east (E), and upward (U) components, based on the B1c/B2a frequency of BDS-3, to be 6.9 mm, 4.7 mm, and 26.6 mm, respectively. Similar to the static positioning, the RMS values of kinematic PPP in the three directions of N, E, and U are 2.6 cm, 6.0 cm, and 8.5 cm, respectively. Besides this, the static PPP of BDS-3 (B1cB2a) and BDS-2 + BDS-3 (B1IB3I) have obvious system bias. Compared with static PPP, kinematic PPP is more sensitive to the number of satellites, and the coordinate accuracy in three dimensions can be increased by 27% with the combination of GPS (L1L2) and BDS. Compared with BDS-2+BDS-3 (B1IB3I), the convergence time of BDS-3 (B1CB2a) performs better in both static and kinematic modes. The antenna model does not show a significant difference in terms of the effect of the convergence speed, though the number of satellites observed has a certain influence on the convergence time.

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Satellite availability and positioning performance of uncombined precise point positioning using BeiDou-2 and BeiDou-3 multi-frequency signals

Cited by 17 publications

References 33 publications

GNSS yörünge ve saat dosyalarının doluluk analizi

GNSS yörünge ve saat dosyalarının doluluk analizi

Performance of Multi-GNSS in the Asia-Pacific Region: Signal Quality, Broadcast Ephemeris and Precise Point Positioning (PPP)

Performance Evaluation of Precise Point Positioning for BeiDou-3 B1c/B2a Signals in the Global Range

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