Performance evaluation of GNSS receiver in multi-constellation system

Shabnam, Musharrat; Chowdhury, Imtiaz Hasan; Tushar, Zahid Hassan; Sultana, Sunjida; Hossam-E-Haider,

doi:10.1109/ecace.2017.7912977

Cited by 5 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Visual data inspection of each trial identified no data set errors for positioning in relation to the known trajectories used (Figure 2B), showing exceptional continuity of the PNT solution. The high number of satellites used (~18) in the dry-land simulation supports previous work that relates increased number of satellites in view, and used by the receiver, to increase the geometric dilution of precision [28]. The subsequent dilution of precision measures (Figure 3) supports the PNT solutions ability to use high quality satellite constellation and geometry in the horizontal plane where HDOP was ideal (<1) and reflects low levels of atmospheric or multipath interference, and/or receiver noise [1,9,27].…”

Section: Discussionsupporting

confidence: 74%

Evaluating the Usefulness of a PNT Solution Using DGNSS-SBAS for Canoe Slalom: Simulated and Real-World Analysis

Macdermid,

Irwin

2024

Preprint

View full text Add to dashboard Cite

This study investigated the accuracy and precision of a commercially available PNT solution that uses DGNSS-SBAS technology. Time and position data were sampled at a frequency of 20Hz during both short and long trajectory of a simulated controlled dry-land slalom, as well as during a real-world on-water slalom exercise. The primary objective was to assess the positional accuracy, availability, integrity, and service continuity of the PNT solution while evaluating its ability to differentiate between trajectories. Additionally, the simulated results were compared with an on-water real-world slalom test to validate the findings. The results of the controlled dry-land slalom test indicate that the PNT solution provided accurate measurements with an overall mean±SD Hrms of 0.20±0.02m. The integrity measures, HDOD and PDOP were found to be ideal to excellent, with values of 0.68±0.03, and 1.36±0.07, respectively. The PNT solution utilised an average of 20±1 satellites from the constellation, resulting in an accuracy of

show abstract

Section: Discussionsupporting

confidence: 74%

Evaluating the Usefulness of a PNT Solution Using DGNSS-SBAS for Canoe Slalom: Simulated and Real-World Analysis

Macdermid,

Irwin

2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Currently, smartphones have real operational capability of more GNSS, which will enhance their accuracy, especially for situations with bad satellite visibility and/or multipath errors [4,5]. Thus, the horizontal position errors can decrease 35%, for single frequency receivers, and 40% for dual frequency receivers [6,7].…”

Section: Introductionmentioning

confidence: 99%

An Approach to Improving GNSS Positioning Accuracy Using Several GNSS Devices

2021

View full text Add to dashboard Cite

Single point positioning (SPP) mode, related to pseudorange measurements, limits the level of accuracy to several meters in open sky and to several dozens of meters in urban canyons. This paper explores the effect of using a large number of SPP observations from low-cost global navigation system (GNSS) receivers, smartphones, and handheld GNSS units. Data segmentation and bootstrapping statistical methods were used to obtain the deviation, which can describe the accuracy of the large sample. The empirical test recording data showed that the error may achieve a sub-meter horizontal accuracy by the simple process of increasing the measurements of smartphones and handheld GNSS units. However, the drawback is the long period of time required. To reduce the satellite tracking time, a least squares solution network was applied over all the recorded data, assisted by the external geometric conditions. The final goal was to obtain the absolute positioning and associated deviations of one vertex from three or five GNSS receivers positioned on a network. The process was tested in three geodetic network examples. The results indicated that the enhanced SPP mode was able to improve its accuracy. Errors of several meters were reduced to values close to 50 cm in 25–37 min periods.

show abstract

“…Such signals include GPS L1C signal and BDS B1C signal. Taking GPS L1C signal as an example, the generation method of spread spectrum code [11]: 7-bit fixed sequence '0110100' is inserted into Weil code generated by Legendre sequence, and the insertion position is p, p ∈ [1,10223]. The Legendre sequence can be expressed by formula (13):…”

Section: Architecture Design Of the Spread Spectrum Code Generatormentioning

confidence: 99%

“…Multi-constellation GNSS receivers can provide more observation information especially in more complex urban road conditions. It can provide a better positioning accuracy, availability and reliability compared with single-constellation GNSS receivers [1]- [4]. Making full use of the redundant information of multi-constellation multi-frequency satellite signals can enhance the robustness and anti-jamming ability of GNSS [5].…”

Section: Introductionmentioning

confidence: 99%

A Novel VLSI Architecture for Multi-Constellation and Multi-Frequency GNSS Acquisition Engine

Yang

Chen

2019

IEEE Access

View full text Add to dashboard Cite

This paper proposes a novel VLSI architecture of GNSS acquisition engine based on shorttime correlation combined with an FFT scheme. The architecture supports multi-constellation systems and multi-frequency satellite signals flexibly by the manner of time-division multiplexing. The supported signals include GPS, BDS, GLONASS, GALILEO, QZSS, IRNSS, and SBAS. Compared with other direct acquisition structures, the search efficiency of the acquisition engine is improved by using the IF playback structure. Based on the characteristics of L1C and B1C signal spread spectrum codes, an efficient generation method and the circuit structure of Legendre sequence which is compatible with L1C and B1C spread spectrum codes are proposed. It can effectively reduce the die area of the spread spectrum code generator and the generation time of the L1C/B1C spread spectrum code. Combining with the acquisition scheme adopted in this paper, the structure of the short-time correlators' array is optimized, and the maximum clock frequency of the acquisition engine is significantly improved. The acquisition engine proposed in this paper is implemented in a 55-nm CMOS technology. The system occupied a silicon area of 2.1 mm 2 and consumes only 72.02-mW power while realizing the maximum clock frequency at about 333.33 MHz.

show abstract

Performance evaluation of GNSS receiver in multi-constellation system

Cited by 5 publications

References 2 publications

Evaluating the Usefulness of a PNT Solution Using DGNSS-SBAS for Canoe Slalom: Simulated and Real-World Analysis

Evaluating the Usefulness of a PNT Solution Using DGNSS-SBAS for Canoe Slalom: Simulated and Real-World Analysis

An Approach to Improving GNSS Positioning Accuracy Using Several GNSS Devices

A Novel VLSI Architecture for Multi-Constellation and Multi-Frequency GNSS Acquisition Engine

Contact Info

Product

Resources

About