Vehicle Positioning via Auxiliary Devices in GPS-Denied Areas
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Autonomous vehicles face inaccurate or impossible positioning in areas blocked by obstacles like tunnels or buildings due to weak or absent satellite positioning signals.
Innovation Solution
A vehicle positioning method that sends an auxiliary positioning request to nearby devices within a preset range, receives location information, and determines the vehicle's location using this information and distance data, allowing positioning without satellite signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If satellite positioning system is used for vehicle positioning, then positioning can be performed globally and continuously, but positioning accuracy deteriorates or positioning becomes impossible in areas blocked by obstacles such as tunnels and buildings
Solution Approach 1:
The patent introduces auxiliary positioning devices as intermediaries between the vehicle and the positioning system. These devices are deployed in areas where satellite signals are blocked (such as tunnels and buildings) and provide alternative positioning references. The vehicle communicates with these auxiliary devices to determine its position, effectively mediating the positioning function in GPS-denied environments and resolving the contradiction between global coverage and local accuracy.
Solution Approach 2:
The patent divides the positioning system into multiple independent components: satellite positioning system for open areas and auxiliary positioning devices for obstructed areas. Each segment operates independently in its suitable environment, with the satellite system providing global coverage and auxiliary devices providing localized precision in blocked areas. This segmentation allows the system to maintain both global availability and local accuracy without compromise.
2Measurement precision
If auxiliary positioning devices are deployed to improve positioning in obstructed areas, then positioning accuracy improves, but system complexity increases
Solution Approach 1:
The auxiliary positioning devices are designed to perform multiple functions: they serve as positioning references for vehicles, provides coverage information for map updates, and can communicate with both satellite systems and vehicle systems. This multi-functionality reduces the need for separate specialized devices, thereby improving positioning accuracy while limiting the increase in overall system complexity.
Solution Approach 2:
The system automatically detects and utilizes available auxiliary positioning devices without requiring manual configuration or complex setup procedures. The vehicle system autonomously identifies auxiliary devices in the environment, establishes communications, and integrates their data into the positioning calculation, reducing the operational complexity despite the added hardware infrastructure.
Data Source
AI summary
Provided are a vehicle positioning method, an apparatus and a device. The method includes: sending an auxiliary positioning request to an auxiliary positioning device within a preset distance range; receiving an auxiliary positioning message returned by the auxiliary positioning device with respect to the auxiliary positioning request, where the auxiliary positioning message carries location information of the auxiliary positioning device; and determining a current location of a current vehicle according to the location information of the auxiliary positioning device and distance information between the current vehicle and the auxiliary positioning device. The method of the present disclosure can implement vehicle positioning without a satellite positioning signal. The vehicle positioning can be performed when the vehicle is blocked by an obstacle such as a tunnel, a building and the satellite positioning signal cannot be received, improving the accuracy of the vehicle positioning.