Ground Aircraft Position Prediction Integrating Onboard Hardware Integrity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional tools for predicting the precision, integrity, and availability of an aircraft's position on the ground lack comprehensive coverage, particularly failing to monitor onboard hardware integrity in the calculation of total integrity, which is crucial for precise navigation procedures like RNP.
Innovation Solution
A prediction device and method that include a path generation unit, a central unit with a performance and integrity model consistent with onboard aircraft models, and a unit for presenting precision, integrity, and availability information, which accounts for satellite positioning system integrity and onboard hardware integrity, enabling comprehensive and precise predictions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional ground prediction tools are used to predict aircraft position characteristics, then prediction capability is provided, but onboard hardware integrity monitoring is not covered
Solution Approach 1:
The patent merges the ground prediction system with onboard hardware integrity monitoring capabilities. The prediction device integrates multiple monitoring functions including satellite positioning system integrity, inertial reference system integrity, and radio altitude system integrity into a unified prediction framework, thereby achieving comprehensive coverage without proportionally increasing complexity
Solution Approach 2:
The prediction device is designed with multi-functionality to handle various integrity sources simultaneously. It can process and predict integrity characteristics from multiple systems (GPS/GNSS, IRS, radio altitude) using a single integrated platform, making the system universally applicable to different navigation scenarios
2Measurement precision
If comprehensive integrity monitoring is implemented, then prediction accuracy is improved, but computational complexity increases
Solution Approach 1:
The patent segments the integrity monitoring into distinct modular components: satellite positioning system integrity monitoring, inertial reference system integrity monitoring, and radio altitude system integrity monitoring. Each component can be independently configured and processed, allowing comprehensive monitoring while managing computational complexity through modular architecture
Solution Approach 2:
The system dynamically adjusts prediction parameters based on the specific flight phase and available data quality. By changing parameters such as the prediction horizon, filtering characteristics, and integrity thresholds adaptively, the system achieves high precision without requiring maximum computational resources in all scenarios
Data Source
AI summary
A prediction device for prediction on the ground of characteristics of the position of an aircraft along a path is provided. The prediction device comprises a calculation element comprising a performance and integrity model consistent with a model on board an aircraft. The second calculation element determines precision, integrity and availability information concerning the position of the aircraft along a flight and/or ground path. The integrity information taking account of an integrity of a satellite positioning system and at least one hardware integrity on board the aircraft.