Abstract
Purpose
The purpose of this work is to obtain an overbounded broadcast sigma from actual (non-Gaussian) correction error distribution under the stringent navigation integrity requirements for aircraft precision approach and landing.
Design/methodology/approach
Approach is statistically to overbound satellite pseudorange correction error distribution with the use of numerical solution of Fisher-Ztransformation. Inflation factors for overbounding broadcast sigma are extracted from Fisher-Ztransformation based on measured correlation and counted independent identically distributed (iid) sample sizes of true empirical data.
Findings
New overbounded broadcast sigma values for eight long-pass satellites were obtained based on measured actual empirical data and ensured integrity risk at 10−8probability level. Proposed methodology successfully overbounds ground reflection multipath-type systematic and temporal errors sources.
Originality/value
This paper introduced a new method of accounting for ground reflection multipath for local area augmentation system/ground-based augmentation system navigation integrity. The method is also applicable to statistically overbound any other serially correlated temporal variation in measured data if both correlation values and finite iid sample sizes are known.