Synthetic Vision System Integrating Navigation Chart Data
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Solution Overview
Problem
Current Synthetic Vision Systems (SVS) require operators to mentally combine separate SVS views and navigation charts, leading to decreased situational awareness and increased complexity in vehicle operation.
Innovation Solution
A Synthetic Vision System that integrates navigation chart information with a synthetic terrain representation, allowing for a combined display that includes relevant information and indicators for the current planned course, with adjustable detail levels and textual representations, reducing the need for mental combination of information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If navigation chart information is provided on a separate display or paper copy, then the SVS can maintain a clean synthetic terrain representation, but the operator must mentally combine information from multiple sources, decreasing situational awareness and increasing operational complexity
Solution Approach 1:
The patent merges navigation chart information with the synthetic terrain representation into a single integrated display. The system overlays navigation chart elements (such as airports, navigation aids, terrain features) directly onto the SVS synthetic terrain view, eliminating the need for separate displays or paper charts. This integration allows operators to view all necessary information in one unified display, improving situational awareness and reducing the cognitive load of mentally combining multiple information sources.
2Loss of information
If all navigation chart information is displayed, then complete navigation data is available, but the display becomes cluttered with irrelevant information for the current planned course
Solution Approach 1:
The patent applies local quality by dynamically adjusting the level of detail and relevance of navigation chart information based on its relationship to the current planned course. The system prioritizes displaying navigation elements (airports, navigation aids, terrain features) that are relevant to the active flight plan while minimizing or excluding irrelevant information. This selective display approach maintains information completeness for the current task while preserving display clarity by filtering out unnecessary details.
Solution Approach 2:
The patent segments navigation chart information into relevant and irrelevant portions based on the current planned course. The system divides the comprehensive navigation data set into segments that are pertinent to the active flight plan and those that are not, displaying only the relevant segments on the integrated display. This segmentation allows the system to maintain complete navigation information availability while presenting only the necessary subset to the operator, avoiding display clutter.
3Measurement precision
If detailed navigation chart information is displayed at all distances, then all navigation features are visible, but distant features appear overly detailed and close features may lack sufficient context
Solution Approach 1:
The patent implements dynamics by adjusting the level of detail for navigation chart information based on the distance from the vehicle. The system dynamically modifies display characteristics (such as symbol size, text scale, and level of detail) according to the ranging data for different navigation features. Distant features are displayed with appropriate contextual information and smaller detail levels, while closer features are shown with higher detail and larger symbols, ensuring optimal visibility and relevance at all distances.
Data Source
AI summary
The present disclosure is directed to a Synthetic Vision System (SVS) view combined with information from navigation charts. The operator of a vehicle is not required to mentally combine separate SVS view and navigation charts, increasing situational awareness and decreasing complexity. A synthetic terrain representation is generated, combined with navigation chart information, and displayed. Additionally, the combination may include an indicator indicating the intended path of the current planned course. The combination may be generated with less detailed navigation chart information when further away or more detailed navigation chart information when close, displaying more detail as landmarks are approached. The combination may include indicators representing one or more navigation aids based on information in the navigation charts. The combination may include text based on navigation chart information.