Ground-Based Vehicle Localization Using Synchronized Locating Nodes
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Solution Overview
Problem
Existing vehicle localization systems, such as GNSS, face issues like satellite signal obscuration, interference, and inaccuracies due to satellite positions and geometric distribution, which affect the precision and reliability of vehicle positioning, especially in urban environments.
Innovation Solution
A localized positioning system using synchronized earthbound locating devices that transmit signals to vehicles, allowing for accurate determination and display of vehicle position data through a server-based approach, eliminating satellite-related errors and enabling precise three-dimensional localization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If satellite-based localization systems (GNSS) are used for vehicle positioning, then coverage area is large, but measurement precision deteriorates due to signal obscuration, interference, and geometric distribution issues
Solution Approach 1:
The patent divides the localization system into multiple ground-based locating devices distributed in the environment. Instead of relying on a single satellite system, the coverage area is segmented into multiple zones, each monitored by local devices, thereby maintaining high precision within each segment while collectively providing broad coverage.
Solution Approach 2:
The patent introduces ground-based locating devices as intermediaries between the vehicle and the localization system. These devices receive signals from the vehicle and transmit localization data, acting as mediators that eliminate direct dependence on satellite signals and their associated problems while maintaining accurate positioning.
2Measurement precision
If more locating devices are deployed to improve positioning accuracy, then measurement precision improves, but device complexity increases
Solution Approach 1:
The locating devices are designed to perform multiple functions: receiving vehicle signals, determining position, and transmitting localization data. This multi-functionality reduces the need for separate specialized components, thereby improving precision without proportionally increasing system complexity.
Solution Approach 2:
The vehicle's own signal transmission capability is utilized for localization purposes. The vehicle effectively localizes itself by transmitting signals that are received by ground-based devices, eliminating the need for additional active sensors on the vehicle and reducing overall system complexity.
3Ease of manufacture
If satellite signals are used for vehicle localization, then initial setup is simple, but reliability deteriorates due to signal obscuration and interference
Solution Approach 1:
The patent converts the vehicle's signal transmission capability, which could be considered a potential source of interference, into a beneficial resource for localization. The same signal that might cause interference is utilized by ground-based devices to accurately determine vehicle position, thereby improving reliability without adding complex hardware.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides highly accurate and cost-effective vehicle localization with reduced interference, enabling enhanced road safety and traffic flow management by using locally synchronized devices and on-board sensors for real-time map updates and dynamic object tracking.
Implementation Method 1
clocks of the locating devices being synchronized with one another, as a result of which distances of the localization devices with respect to the vehicle can be ascertained very accurately
Data Source
AI summary
A localization system includes at least three locally defined locating devices whose clocks are synchronized and that receive signals of at least one vehicle; and a determination device that is configured to receive the signals of the at least one vehicle and data regarding distances of the locating devices relative to the vehicle, ascertain from the received data a surroundings model containing position data of the vehicle, and wirelessly transmit the surroundings model to the vehicle.