Navigation Augmentation Usability Simulation via Reference Station
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Solution Overview
Problem
Users face challenges in determining the usability of augmentation systems within specific geographic regions before and after installation, as existing methods are costly and lack clarity on error accuracy, making it difficult to assess whether the system will perform as expected.
Innovation Solution
A system and method that utilize a reference station with a known position to simulate augmentation systems by determining corrections based on received satellite messages, allowing users to assess the usability of the augmentation system through a monitoring system, which includes a simulator and a graphical user interface to render corrections in a human-interpretable format.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a reference station with known position is used to simulate augmentation systems, then measurement precision and reliability of usability assessment are improved, but device complexity and cost increase
Solution Approach 1:
The patent creates a simulated augmentation system that copies the functional behavior of real augmentation systems (SBAS, GBAS, ABAS) without requiring actual deployment. The simulator generates virtual correction data and integrity information based on reference station positions and satellite messages, providing a simplified copy that maintains measurement precision while reducing system complexity and cost.
Solution Approach 2:
The patent introduces a simulator as an intermediary component between the reference station and the usability assessment. This intermediary software system processes reference station data and satellite messages to generate simulated correction information, enabling accurate usability evaluation without direct interaction with complex real-world augmentation systems.
2Reliability
If real augmentation systems are deployed for evaluation, then reliability of performance assessment is improved, but loss of time and cost increase
Solution Approach 1:
The patent enables preliminary evaluation of augmentation system usability before actual deployment and operation. By simulating system behavior in advance using reference station data and satellite messages, users can assess performance characteristics, error rates, and integrity information prior to implementing the real system, thereby reducing time loss and avoiding costly trial-and-error.
Solution Approach 2:
The simulator creates a virtual copy of the augmentation system that replicates its computational logic and error characteristics. This copy allows repeated evaluation scenarios without requiring physical deployment, maintaining reliability through accurate simulation of correction processing while significantly reducing time consumption compared to real-world testing.
3Manufacturing precision
If multiple GPS satellites are used for position fixing, then manufacturing precision and availability are improved, but device complexity increases
Solution Approach 1:
The simulator copies the satellite signal processing logic and error correction algorithms used in actual GNSS receivers. It processes multiple satellite messages and generates simulated correction data that reflects real-world processing complexity, enabling usability assessment of precision performance without requiring the user to implement complex signal processing themselves.
Data Source
AI summary
In one aspect, the invention is the system for assessing a navigation augmentation environment. The system includes a reference station for receiving messages from a satellite. The reference station has a known position. The system also includes a simulator for simulating an augmentation system by determining corrections based on the messages received and the known position of the reference station. The system further includes a monitoring system to render the corrections to a user in a form enabling determination of the usability of the augmentation system in the navigation augmentation environment.