Performance evaluation of BDS-2/BDS-3 combined precise time transfer with B1I/B2I/B3I/B1C/B2a five-frequency observations

Xu, Wei; Yan, Chunxiao; Chen, Jian

doi:10.1007/s10291-022-01262-y

Cited by 10 publications

(4 citation statements)

References 30 publications

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“…Beidou Navigation Satellite System (BDS) has completed the “three step” strategy [ 1 , 2 ]. Now, BDS can provide real-time, all-weather, high accuracy services for global users [ 3 , 4 ]. Moreover, the BDS positioning accuracy is equivalent to or even better than GPS and has a faster average convergence speed than GPS [ 5 ] in the Asian-Pacific region achieved by collecting more satellite data.…”

Section: Introductionmentioning

confidence: 99%

BDS Dual-Frequency Carrier Phase Multipath Hemispherical Map Model and Its Application in Real-Time Deformation Monitoring

Sun

Zhang

Gào

et al. 2023

Sensors

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The BDS multipath delay error is highly related to the surrounding monitoring environment, which cannot be eliminated or mitigated by applying the double difference observation model. In the actual monitoring environment, due to the complexity of the BDS constellation, it is difficult for existing algorithms to consider GEO, IGSO, MEO and other different orbital types of satellites for real-time and efficient multipath error reduction. Therefore, we propose a novel BDS dual-frequency multipath error reduction method for real deformation monitoring for BDS considering various satellite orbit types. This method extracts the single error residual of each satellite based on the assumption of “zero mean” and divides the appropriate grid density of GEO and IGSO/MEO, respectively, to construct a dual-frequency multipath hemispherical map model suitable for BDS satellites with different orbital types. This method can realize the multipath error elimination of the observed values of different orbits and different frequencies. The results of simulation experiments and real deformation monitoring data demonstrate that this method can effectively eliminate low-frequency multipath delay errors in the observation domain and coordinate domain. After multipath correction, the precision of the horizontal coordinates and height coordinates are 1.7 mm and 4.6 mm. The precision of the horizontal coordinate and height coordinate is increased by 50% and 60%, respectively. The fixed rate of ambiguity increased by 5–7%.

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Section: Introductionmentioning

confidence: 99%

BDS Dual-Frequency Carrier Phase Multipath Hemispherical Map Model and Its Application in Real-Time Deformation Monitoring

Sun

Zhang

Gào

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…The Beidou Navigation Satellite System (BDS) has completed the "three step" strategy (Yang et al 2022). Now, BDS can provide real-time, all-weather, high accuracy services for global users (Braasch 1996; Xu et al 2022). Moreover, the BDS positioning accuracy is equivalent to or even better than GPS, and has a faster average convergence speed than GPS (Liu et al 2021b) in the Asian-Pacific region achieved by collecting more satellite data.…”

Section: Introductionmentioning

confidence: 99%

BDS dual-frequency carrier phase multipath MHM model and its application in real deformation monitoring scenario

Zhang

Sun

Gào

et al. 2023

Preprint

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The BDS multipath delay error is highly related to the surrounding monitoring environment, which cannot be eliminated or mitigated by establishing the double difference observation model. In the actual monitoring environment, due to the complexity of the BDS constellation, it is difficult for existing algorithms to consider GEO, IGSO, MEO and other different orbital types of satellites for real-time and efficient multipath error reduction. Therefore, this paper proposes a novel BDS dual-frequency multipath error reduction method for real deformation monitoring for BDS considering various satellite orbit types. This method extracts the single error residual of each satellite based on the assumption of "zero mean", and divides the appropriate grid density of GEO and IGSO\MEO respectively, to construct the dual-frequency multi-path hemispherical map model suitable for BDS satellites with different orbital types. This method can realize the multi-path error elimination of the observed values of different orbits and different frequencies. The results of simulation experiments and real deformation monitoring data demonstrate that this method can effectively eliminate low-frequency multipath delay errors in the observation domain and coordinate domain. After multipath correction, the precision of the horizontal coordinates and height coordinates is 1.7mm and 4.6mm. The precision of the horizontal coordinate and height coordinate is increased by 50% and 60% respectively. The fixed rate of ambiguity increased by 5%~7%.

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“…Remarkably, this performance is achieved without the need for intricate searches during cycle slip repair.In comparison to conventional combination methods, this algorithm significantly enhances the accuracy of cycle slip repair, improving it by an impressive 42.2%.The BeiDou Navigation Satellite System (BDS) has injected fresh vigor into the advancement of Global Navigation Satellite Systems (GNSS). BDS boasts widespread applications in diverse domains such as aviation, maritime navigation, vehicle navigation, surveying, and geographic information systems [1][2][3][4] . Nevertheless, the practical use of GNSS receivers is often fraught with challenges due to the multitude of error sources during signal propagation.…”

mentioning

confidence: 99%

“…The BeiDou Navigation Satellite System (BDS) has injected fresh vigor into the advancement of Global Navigation Satellite Systems (GNSS). BDS boasts widespread applications in diverse domains such as aviation, maritime navigation, vehicle navigation, surveying, and geographic information systems [1][2][3][4] . Nevertheless, the practical use of GNSS receivers is often fraught with challenges due to the multitude of error sources during signal propagation.…”

mentioning

confidence: 99%

A hierarchical combination algorithm for real-time cycle slip detection and repair in low satellite elevation and ionospheric scintillation conditions

Ban,

Li,

Wang

et al. 2023

Preprint

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To enhance the accuracy and robustness of cycle slip detection and repair for triple-frequency data while minimizing the adverse effects of low satellite elevation and ionospheric scintillation, a hierarchical combination algorithm for real-time cycle slip detection and repair is proposed. This algorithm begins by prioritizing the reduction of noise and ionospheric delay coefficients. It determines the optimal coefficients for the combination of observations from the BeiDou Navigation Satellite System's (BDS) Extra-Wide Lane (EWL), Wide Lane (WL), and Narrow Lane (NL). Leveraging the longer wavelength characteristics of the EWL combination, it simultaneously conducts cycle slip detection on the EWL combination alongside pseudo-range combinations. Following this, based on the detection outcomes from the EWL combination, cycle slip detection is carried out on the WL combination. Finally, using the detection findings from the WL combination, cycle slip detection is executed on the NL combination. Given the NL combination's shorter wavelength and higher susceptibility to ionospheric delay, a dynamic ionospheric prediction model is applied to the NL combination to further mitigate the impact of ionospheric disturbances. After completing the cycle slip detection process, the results from the EWL, WL, and NL combinations are integrated and solved. Experimental results clearly demonstrate that, even in scenarios characterized by low satellite elevation and active ionospheric conditions, this algorithm consistently delivers outstanding detection performance for cycle slip instances, particularly for small cycle slip(less two cycle). Remarkably, this performance is achieved without the need for intricate searches during cycle slip repair. In comparison to conventional combination methods, this algorithm significantly enhances the accuracy of cycle slip repair, improving it by an impressive 42.2%.

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Performance evaluation of BDS-2/BDS-3 combined precise time transfer with B1I/B2I/B3I/B1C/B2a five-frequency observations

Cited by 10 publications

References 30 publications

BDS Dual-Frequency Carrier Phase Multipath Hemispherical Map Model and Its Application in Real-Time Deformation Monitoring

BDS Dual-Frequency Carrier Phase Multipath Hemispherical Map Model and Its Application in Real-Time Deformation Monitoring

BDS dual-frequency carrier phase multipath MHM model and its application in real deformation monitoring scenario

A hierarchical combination algorithm for real-time cycle slip detection and repair in low satellite elevation and ionospheric scintillation conditions

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