Synthetic Vision Display Consistency Check for Aircraft Navigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Erroneous displays in synthetic vision systems of aircraft can lead to critical consequences during flight, such as incorrect positioning of mountains or sudden terrain changes, posing safety risks due to pilot reactions.
Innovation Solution
A method and system for securing the operation of synthetic vision systems by introducing a control object within the field of view, using independent detectors and processing modules to verify the consistency of the display, and raising alerts or modifying the display to ensure accuracy and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a synthetic vision system displays terrain and obstacles based on aircraft position and attitude data, then the pilot receives a three-dimensional view of the external environment for navigation assistance, but errors in position or attitude parameters can cause erroneous displays that lead to critical flight consequences
Solution Approach 1:
The system performs preliminary validation of aircraft position and attitude data before generating the synthetic vision display. By checking data consistency and plausibility in advance, the system prevents erroneous terrain and obstacle representations from appearing on the display, thereby maintaining both ease of operation and reliability
Solution Approach 2:
The system implements feedback mechanisms that continuously monitor the synthetic vision display for inconsistencies. When errors are detected in the displayed terrain or obstacles, the system provides feedback to correct or flag the issue, ensuring display accuracy while maintaining navigation assistance functionality
2Loss of information
If the synthetic vision system generates a three-dimensional view using aircraft position, attitude, and terrain database, then the pilot obtains enhanced situational awareness, but the system complexity increases due to multiple data sources and processing requirements
Solution Approach 1:
The system segments the synthetic vision generation into distinct functional modules: aircraft state data processing, terrain database querying, obstacle data integration, and display rendering. This modular segmentation maintains comprehensive situational awareness while managing system complexity through organized, independent processing components
Solution Approach 2:
The system employs a universal data processing framework that handles multiple data types (position, attitude, terrain, obstacles) through a common architecture. This multi-functional approach reduces overall system complexity by using shared processing resources rather than separate dedicated systems for each data type
3Measurement precision
If the system validates display consistency by introducing control objects and independent verification, then display accuracy improves, but the processing time and computational load increase
Solution Approach 1:
The system applies partial verification by focusing validation efforts on critical display elements such as terrain elevation contours and obstacle positions rather than verifying every pixel. This selective approach maintains display consistency while minimizing additional processing time
Solution Approach 2:
The system performs preliminary consistency checks on aircraft position and attitude data before generating the synthetic vision display. By validating input data in advance, the system reduces the need for extensive post-processing verification, thereby maintaining measurement precision while reducing overall verification time
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a method for ensuring the safe operation of an aircraft's synthetic vision system. This method comprises the steps of determining (120) at least one control object within the field of view of the synthetic vision system and determining at least one control point belonging to each control object, and verifying (140) the consistency of the synthetic vision system display. The verification step (140) includes the substeps of retrieving (141) a first position corresponding to the displayed position of each control point on the corresponding plot on the synthetic vision system display, determining (142) a second position of each control point on the synthetic vision system display, and comparing (143) the first and second positions.