Integrity monitoring scheme for single-epoch GNSS PPP-RTK positioning

Article Remote Sensing

Integrity monitoring scheme for undifferenced and uncombined multi-frequency multi-constellation PPP-RTK

Wenhao Zhang et al.

Summary: This study proposes an integrity monitoring scheme for multi-frequency multi-constellation uncombined PPP-RTK and validates its high accuracy and shorter convergence time in real-time land vehicle positioning through case studies.

GPS SOLUTIONS (2023)

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Article Environmental Sciences

Integrity Monitoring of PPP-RTK Positioning; Part I: GNSS-Based IM Procedure

Kan Wang et al.

Summary: This paper proposes an integrity monitoring strategy for multi-constellation PPP-RTK positioning based on GNSS signals. It analytically studies the variance-covariance matrix of ionosphere interpolation errors and analyzes the impacts of factors such as user multipath environment, ionosphere activity, network scale, and horizontal probability of misleading information on the HPL size and convergence. The results show that user multipath environment has the largest influence on the converged HPL size, while ionosphere interpolation and multipath environments jointly affect the HPL convergence.

REMOTE SENSING (2022)

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Article Remote Sensing

Toward BDS/Galileo/GPS/QZSS triple-frequency PPP instantaneous integer ambiguity resolutions without atmosphere corrections

Jun Tao et al.

Summary: This study proposes a multi-frequency precise point positioning method without atmosphere corrections, which can achieve fast convergence within a few seconds. By processing BDS/Galileo/GPS/QZSS triple-frequency observations, high-precision positioning at the centimeter level can be achieved.

GPS SOLUTIONS (2022)

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Article Remote Sensing

A linear Kalman filter-based integrity monitoring considering colored measurement noise

Yuting Gao et al.

Summary: This study proposes a linear Kalman filter-based integrity monitoring method to address the problem of colored noise in navigation systems, showing that it effectively reduces false alarms in simulated experiments.

GPS SOLUTIONS (2021)

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Article Remote Sensing

Multi-constellation GNSS PPP instantaneous ambiguity resolution with precise atmospheric corrections augmentation

Xingxing Li et al.

Summary: The proposed multi-constellation PPP ambiguity resolution method, augmented by precise atmospheric corrections, achieves instantaneous centimeter-level positioning accuracy. Experimental validation shows the contribution of multi-constellation fusion to the PPP IAR in terms of positioning accuracy and reliability, with the percentage of IAR up to 90.0% for multi-GNSS solutions.

GPS SOLUTIONS (2021)

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Article Geochemistry & Geophysics