Aircraft Control Using Encoded Terrain Data for Restricted Areas
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Solution Overview
Problem
Current systems for controlling aircraft require significant effort to provide information about operating restrictions in special areas, making it difficult to adapt flight routes and operations to comply with geographical and operational specifications.
Innovation Solution
A method and system that use a set of elevation information, where actual altitude information is replaced by deviating altitude information for special areas, allowing for unified control commands that maintain aircraft distance from the earth's surface and adapt operations to meet specific restrictions, such as noise reduction or speed limits, by integrating geographical and operational specifications within a single data set.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If separate data structures are used for geographical information and operational restrictions, then comprehensive control information can be provided, but system complexity and data management effort increase significantly
Solution Approach 1:
The patent combines geographical altitude information and operational restriction information into a single unified data structure. The altitude data set includes both terrain elevation values and restriction markers (such as special area indicators) in the same data format, eliminating the need for separate data structures and reducing system complexity while maintaining complete control information.
Solution Approach 2:
The unified altitude data structure serves multiple functions simultaneously: it provides geographical elevation information for navigation, identifies special restricted areas through embedded markers, and triggers appropriate operational adaptations. This multi-functional approach replaces what would otherwise require separate specialized data structures.
2Reliability
If manual provision of restriction information is used, then accurate operational guidelines can be provided, but considerable effort and time are required
Solution Approach 1:
Restriction information and operational guidelines are pre-encoded into the altitude data structure during data preparation. Special area markers and associated operational parameters are embedded in advance within the altitude data set, so that during aircraft operation, the control system can automatically retrieve and apply the appropriate restrictions without requiring manual intervention or time-consuming information provision.
3Measurement precision
If accurate geographical altitude information is provided for all areas, then precise navigation control is achieved, but the ability to encode operational restrictions is lost
Solution Approach 1:
The altitude data structure applies different data qualities to different geographical locations. For most areas, precise actual altitude values are provided for accurate navigation. For special restricted areas, the data includes modified altitude values or special markers that encode operational restrictions. This local differentiation allows the system to maintain navigation precision where needed while simultaneously encoding operational adaptations where restrictions apply.
Data Source
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AI summary
The invention relates to a method for controlling aircraft (17). A specified flight position of the aircraft (17) is compared with a piece of geographical height information (30, 31) corresponding to the provided flight position. The piece of geographical height information is obtained from a set (28, 29) of pieces of height information (30, 31), said set corresponding to a geographical area (35), wherein for a first part (45) of the geographical area (35), the set (28, 29) of pieces of height information (30, 31) indicates a piece of relevant geographical height information (30) and for a second part of the geographical area (35), the set indicates a piece of height information (31) deviating from the actual geographical height. The second part of the geographical area (35) comprises a first special area (32), in which the aircraft (17) is only permitted to operate to a limited degree. The height information (31) deviating from the actual geographical height is evaluated in order to actuate an operating component (22, 24, 51) of the aircraft (17) such that the aircraft (17) complies with the limitation when the aircraft (17) is operated in the first special area (32). The invention additionally relates to a corresponding control system.