Navigation Apparatus Position Discrepancy Correction
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Solution Overview
Problem
Navigation apparatuses often display discrepancies between aerial photography maps and actual topography, leading to user confusion and safety issues due to differences in road representations and positions.
Innovation Solution
A navigation apparatus that stores and converts position information between photographic and graphic maps, automatically switching between display modes based on the vehicle's location relative to non-matched positions, ensuring accurate map representation and user guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a photographic map is displayed to show actual topography, then the map represents real-world features accurately, but position discrepancies occur between the map and actual location causing user confusion
Solution Approach 1:
The system changes the display parameter by switching between photographic map mode and graphic map mode based on the detected position discrepancy. When a position difference exceeding a threshold is detected, the system transitions from displaying the photographic map to displaying a graphic map with corrected position information, thereby resolving the contradiction between representing actual topography and maintaining position accuracy.
Solution Approach 2:
The system introduces an intermediary mechanism (position difference detection module) that compares the photographic map position with actual GPS position and mediates the display choice. This intermediary detects the discrepancy and triggers appropriate correction by switching to graphic map mode or adjusting the photographic map display, thus resolving the position accuracy issue without losing topographical representation.
2Ease of operation
If graphic map is used to represent roads and intersections, then navigation guidance is clear, but the map does not accurately reflect actual topography and road conditions
Solution Approach 1:
The system makes the map display dynamic by allowing real-time switching between photographic map and graphic map modes based on the vehicle's position and the detected position discrepancy. When the vehicle is in an area with known position errors, the system dynamically switches to graphic map mode for clear navigation guidance; when in accurate areas, it switches to photographic map mode for topographical accuracy, thus resolving the contradiction through dynamic adaptation.
Solution Approach 2:
The system segments the map display into different modes (photographic map mode and graphic map mode) that can be selectively activated based on position discrepancy detection. This segmentation allows the system to provide topographical accuracy where needed and navigation clarity where needed, resolving the contradiction by not relying on a single map type but rather by dividing the display functionality into context-appropriate segments.
3Quantity of substance
If aerial photography is used for mapping, then the map shows current topography, but outdated or inaccurate position information causes navigation errors
Solution Approach 1:
The system implements feedback by continuously comparing the photographic map position with actual GPS position data and using this feedback to detect position discrepancies. When a discrepancy is detected, the system uses this feedback information to switch to graphic map mode or correct the position information, thereby maintaining navigation reliability while preserving the completeness of aerial photography data where accurate.
Data Source
AI summary
A navigation apparatus includes storage configured to store a graphic map and a photographic map, a controller configured to control to convert the photographic map into the graphic map to display the graphic map when the photographic map and actual topography or the photographic map and the graphic map include mutually different positions in a photographic map display mode, and a display configured to display the graphic map or the photographic map and display a current position of a vehicle on the graphic map or the photographic map.