On Usability of Dual-frequency, Compact GNSS Modules for Long Baseline RTK

Mahato, Somnath; Goswami, Mrinal; Kundu, Surajit; Bose, Anindya

doi:10.23919/at-ap-rasc54737.2022.9814309

Cited by 5 publications

(5 citation statements)

References 8 publications

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“…Online PPP provides solution accuracy in the order of few mm (95% confidence level) in the horizontal coordinate and in centimeter-level for the vertical coordinate. This solution quality is comparable to those provided by the higher-cost, multi-constellation, multi-frequency geodetic receivers [16]. For obtaining online PPP solution, the users need to wait for some time, till the proper IGS products are not available.…”

Section: Resultsmentioning

confidence: 77%

“…For short baseline lengths up to around 50km, solution precision less than 50 cm both for 2D and 3D is obtained. For higher baseline lengths, the solution quality slowly degrades with increasing distance, but even for the baseline distance of more than 200 km, the 2D and 3D precision is within 1 m in GPS-only operation [16]. It is to be noted that, in this exercise, a single Base is used together with the low-cost module for RTK; real-time sub-meter position solution is achievable here reducing the overall infrastructure cost.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, for PNT and non-PNT GNSS applications, where very high quality, non-real-time position solutions are required, the CLD modules can meet the user requirements similar to the geodetic GNSS receivers, using only a single GNSS module saving the associated infrastructure cost and system complexity. 2 shows the position solution quality provided by the F9P CLD module used as Rovers at different baseline distances [16]. In this case, the solution precision values are calculated following [14], as these are calculated w.r.t the average position solutions.…”

Section: Resultsmentioning

confidence: 99%

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Position Solution Quality Performance of Compact, Low-cost, Dual Frequency GNSS Modules

Mahato,

Goswami,

Bose

2023

Proceedings of the XXXVth URSI General Assembly and Scientific Symposium – GASS 2023

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GNSS is used for various types of positioning applications.To enhance the quality of positioning, multiple positioning techniques are developed with solution accuracy/ precision varying between meter to mm level. Together with the costly GNSS geodetic receivers, to meet the user requirements of cost-effectiveness, compact, low-cost, single (CLS) and dual-frequency (CLD) modules are commercially available those can be used with compact, commercial patch antennas. This manuscript presents a systematic review on the positioning performance of the CLD GNSS modules for various positioning techniques-SPP, PPP, and RTK with varying baseline lengths. Based on real-time data collected from India, the results show the encouraging potential of such compact modules for GNSS based positioning. It is seen that for the same set of GPSonly data SPP provides 2-3 m solution accuracy and PPP provides mm to decimeter level accuracy for Online and Offline operations respectively. In RTK operation, while used as the Rover the module provides sub-meter solution precision up to a baseline length of 200+ km.

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Section: Resultsmentioning

confidence: 77%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Position Solution Quality Performance of Compact, Low-cost, Dual Frequency GNSS Modules

Mahato,

Goswami,

Bose

2023

Proceedings of the XXXVth URSI General Assembly and Scientific Symposium – GASS 2023

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“…Since low-cost Global Navigation Satellite System (GNSS) receivers have been available for a relatively short time compared with the geodetic ones, the GNSS market share of low-cost GNSS receivers, especially for dual-frequency ones, is gradually increasing [1]. Precise Point Positioning (PPP) and relative positioning using low-cost dual frequency receivers became available due to the mitigation of the first-order ionospheric effect as one of the biggest error sources [2,3,4].…”

Section: Introductionmentioning

confidence: 99%

Data Integrity and Quality Analysis of Low Cost Zed-F9p U-Blox GNSS Receiver

ÖĞÜTCÜ,

ALÇAY,

DUMAN

et al. 2023

KONJES

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Thanks to the rapidly emerging low-cost dual-frequency GNSS receivers, a feasible alternative for geodetic-grade GNSS receivers became available for some GNSS applications. In this study, the performance of data integrity and quality of a low-cost ZED-F9P u-blox GNSS receiver was investigated by comparing it with a geodetic-grade GNSS receiver. Availability of the epoch and phase/code signal channels, signal-to-noise ratio (SNR), code multipath, and cycle slips were analyzed for the geodetic-grade and low-cost ZED-F9P u-blox GNSS receivers. One month’s data of GPS, GLONASS, and Galileo constellations were analysed using the RINEX files of the receivers. The results showed that the epoch availability of the geodetic-grade and u-blox GNSS receiver is comparable to each other, while the availability of phase/code signal channels of the geodetic-grade receiver is higher than the u-blox receiver. In terms of data quality, SNR values from both receivers are comparable, while the multipath level of the u-blox GNSS receiver is significantly higher than the geodetic-grade one. The results also showed that the number of cycle slips of the u-blox receiver is significantly higher than the geodetic-one.

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“…In addition, RTK can realize high-precision positioning in low-cost terminals such as smartphones, providing smartphone users with centimeterlevel positioning in outdoor environments [8][9][10][11]. However, for medium-and long-distance baselines, reliable solutions cannot be obtained by the RTK alone without the model correction of ionospheric errors because of the fragility of satellite signals and the weakened spatial correlation [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Performance research of real-time kinematic/5G combined positioning model

Li¹,

Tu²,

Han³

et al. 2022

Meas. Sci. Technol.

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Global Navigation Satellite System provides real-time and all-weather positioning with high accuracy. Under a good observational environment, short-baseline real-time kinematic (RTK) can provide centimeter-level positioning results. However, RTK without model correction of ionospheric delay will significantly reduce the positioning accuracy, and cannot achieve fast and high-precision positioning when the baseline is too long or heavily occluded. Therefore, we proposed a combined RTK/fifth-generation (5G) mobile communication technology positioning model by combining global positioning system-RTK with the 5G time of arrival observations to improve the positioning accuracy under medium and long baselines. Experimental validation and analysis were conducted based on the measured data of different baseline lengths. Results revealed that the combined RTK/5G positioning model markedly improved the positioning performance in both static and dynamic modes under medium- and long-distance baselines. In particular, the RTK/5G model can also achieve good positioning results in conditions where some satellites are occluded. The combined RTK/5G positioning model is important for achieving high accuracy and real-time and continuous positioning in complex environments.

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On Usability of Dual-frequency, Compact GNSS Modules for Long Baseline RTK

Cited by 5 publications

References 8 publications

Position Solution Quality Performance of Compact, Low-cost, Dual Frequency GNSS Modules

Position Solution Quality Performance of Compact, Low-cost, Dual Frequency GNSS Modules

Data Integrity and Quality Analysis of Low Cost Zed-F9p U-Blox GNSS Receiver

Performance research of real-time kinematic/5G combined positioning model

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