Synthetic Vision Runway Correction via Pilot Input
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Solution Overview
Problem
Existing synthetic vision systems for aircraft struggle to accurately align the synthetic vision runway position with the real-world runway position during taxi operations, due to discrepancies in runway database parameters, without relying on additional databases or sensors.
Innovation Solution
A user input device is integrated into the synthetic vision system to allow pilots to directly correct the synthetic vision runway position, with the capability to receive and apply runway correction commands, using a runway parameter server and database to update the SVS image data and provide enhanced taxi environment information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If runway database parameters are used to generate synthetic vision runway position, then the system provides automated runway information display, but the synthetic vision runway position becomes misaligned with real-world runway position due to database parameter discrepancies
Solution Approach 1:
The system employs feedback by continuously monitoring the alignment between synthetic vision runway position and real-world runway position during taxi operations. When misalignment is detected, the system provides feedback to the database through correction data, enabling automatic adjustment of runway parameters to eliminate the discrepancy and maintain accurate alignment.
Solution Approach 2:
The system implements self-service by enabling the aircraft's own synthetic vision system to correct its own positioning errors. Through the correction capability, the system autonomously identifies misalignment issues and generates correction data to adjust the database parameters, allowing the system to self-correct without external intervention.
2Measurement precision
If additional databases or sensors are used to correct runway position discrepancies, then measurement precision improves, but device complexity increases
Solution Approach 1:
The system uses the aircraft's existing synthetic vision system and taxi operation context to self-correct positioning errors. By leveraging already-available components and the natural taxiing process, the system achieves accurate runway alignment without adding external sensors or databases, thereby maintaining simplicity while improving precision.
Solution Approach 2:
The system introduces a correction data mechanism as an intermediary between the synthetic vision system and the runway database. This intermediary enables precise position alignment by transmitting correction information without requiring complex additional hardware or sensor systems.
3Reliability
If real-time correction of runway position is implemented, then reliability of runway environment information improves, but computational workload increases
Solution Approach 1:
The system performs self-correction by using the observed misalignment during taxi operations to generate correction data. This approach maintains high reliability of runway environment information while avoiding complex real-time computational processing, as the correction is based on direct observation rather than complex calculations.
Data Source
AI summary
A synthetic vision system (SVS) for an aircraft, including a user input device for receiving runway correction commands from a user. The runway correction commands are in response to discrepancies observed by the user between an observed runway position in the real world and a synthetic vision runway position depicted on an electronic display device. The user input device provides runway corrections. An SVS computer is operatively connected to the electronic display device for providing SVS image data to the electronic display device in response to received runway parameter data. A runway parameter server device (RPSD) is operatively connected to the user input device and to the SVS computer for receiving the runway corrections from the user input device and providing the runway parameter data, including any corrected data provided by the user, to the SVS computer. A runway parameter database is operatively connected to the RPSD for receiving correction data from the RPSD and providing corrected data to the RPSD. The user input device provides the capability of stewing the synthetic vision runway position to the observed real-world runway position when the synthetic vision runway position is observed to be misaligned, the corrected data being subsequently used to provide enhanced runway environment information for taxi operations.