GLS Integrity Estimation Based on Improved EM Parameter Estimation Method

Zhong, Lei; Zhuoxuan, Zhang; Fan, Zhendong

doi:10.1109/icess49830.2020.9301508

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2022

2023

Publication Types

Select...

Other1

Article1

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Fault Detection and Exclusion for Cooperative Vehicles Navigation under High-Precision Positioning

Hou,

Fang,

Dong

et al. 2023

2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)

View full text Add to dashboard Cite

Fault Detection and Exclusion for Cooperative Vehicles Navigation under High-Precision Positioning

Hou,

Fang,

Dong

et al. 2023

2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)

View full text Add to dashboard Cite

An Error Overbounding Method Based on a Gaussian Mixture Model with Uncertainty Estimation for a Dual-Frequency Ground-Based Augmentation System

et al. 2022

View full text Add to dashboard Cite

To ensure the integrity of a ground-based augmentation system (GBAS), an ionosphere-free (Ifree) filtering algorithm with dual-frequency measurements is employed to make the GBAS free of the first-order ionospheric influence. However, the Ifree algorithm outputs the errors of two frequencies. The protection level obtained via the traditional Gaussian overbound is overconservative. This conservatism may cause false alarms and diminish availability. An overbounding framework based on a Gaussian mixture model (GMM) is proposed to handle samples drawn from Ifree-based GBAS range errors. The GMM is employed to model the single-frequency errors that concern the uncertainty estimation. A Monte Carlo simulation is performed to determine the accuracy of the estimated GMM confidence level obtained by using the general estimation approach. Then, the final GMM used to overbound the Ifree error distribution is analyzed. Based on the convolution invariance property, vertical protection levels in the position domain are explicitly derived without introducing complex numerical calculations. A performance evaluation based on a real-world road test shows that the Ifree-based vertical protection levels are tightened with a small computational cost.

show abstract

GLS Integrity Estimation Based on Improved EM Parameter Estimation Method

Cited by 2 publications

References 6 publications

Fault Detection and Exclusion for Cooperative Vehicles Navigation under High-Precision Positioning

Fault Detection and Exclusion for Cooperative Vehicles Navigation under High-Precision Positioning

An Error Overbounding Method Based on a Gaussian Mixture Model with Uncertainty Estimation for a Dual-Frequency Ground-Based Augmentation System

Contact Info

Product

Resources

About