Digital Map Creation via Multi-Vehicle Sensor Data Grouping
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Solution Overview
Problem
Existing digital map creation methods for traffic routes are prone to errors due to multipath effects and atmospheric disturbances in satellite-based positioning systems, which can affect the accuracy of surrounding area feature positioning, especially for automated vehicles requiring high precision.
Innovation Solution
A method that involves receiving surrounding area data sets from environmental sensors, sorting features by position, determining spatial arrangements, optimizing feature positions within each group without altering relative positions, and creating a digital map based on these optimized positions to enhance accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If satellite-based positioning systems are used for digital map creation, then coverage area is improved, but measurement precision deteriorates due to multipath effects and atmospheric disturbances
Solution Approach 1:
The patent combines multiple surrounding area data value sets from multiple vehicles into a single digital map. By merging data from multiple independent sources, the system achieves compensation for individual positioning errors while maintaining broad geographic coverage. The relative positions of surrounding area features are determined from multiple measurements, which statistically reduces the impact of multipath effects and atmospheric disturbances on the final map accuracy.
2Device complexity
If individual surrounding area data value sets are used directly, then processing complexity is reduced, but manufacturing precision deteriorates due to positioning errors
Solution Approach 1:
The patent segments the digital map creation process into distinct processing steps: receiving surrounding area data value sets from multiple vehicles, determining relative positions of surrounding area features within each data set, and then combining these data sets into a unified digital map. This segmentation allows for systematic error compensation at each stage while maintaining manageable processing complexity through modular operations.
Solution Approach 2:
The patent performs preliminary determination of relative positions of surrounding area features within each individual surrounding area data value set before combining the data sets. This preliminary processing step establishes accurate relative geometry that can then be integrated into the final map, ensuring that positioning accuracy is optimized before the final merging operation occurs.
Data Source
AI summary
A method and apparatus for creating a digital map. The method includes: receiving surrounding area data value sets, each set being detected using an environmental sensor system of a vehicle traveling along a traffic route, wherein each surrounding area data value set includes surrounding area features and a position of the surrounding area features; creating the digital map, wherein in the creating, the surrounding area features of the surrounding area data sets are sorted into groups depending on their position, a spatial arrangement of the respective surrounding area features relative to one another is determined for each group, an optimized position of the surrounding area features of the group is determined for each group without changing the spatial arrangement, and the digital map is created depending on the optimized position of the surrounding area features of each group; and providing the digital map.