Vehicle Positioning System Using Surrounding Vehicle Feedback

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Solution Overview

Problem

In infrastructure cooperation systems, the positioning accuracy of vehicles is hindered by varying positioning performances among vehicles, which can lead to insufficient support for improving positioning accuracy in vehicles with poor performance.

Innovation Solution

A vehicle positioning system that receives and analyzes information from surrounding vehicles to determine their positioning performance, uses this information to enhance its own positioning accuracy, and transmits effective information to other vehicles to improve their positioning performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If satellite positioning information is shared among vehicles, then positioning accuracy of individual vehicles can be improved, but the complexity of information management and processing increases

Engineering Contradiction:

Improvepositioning accuracyVSAvoidinformation management complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The system implements feedback by having vehicles share their positioning performance information with surrounding vehicles. Each vehicle receives feedback about others' positioning accuracy, satellite usage patterns, and environmental factors, which is then used to adjust and improve its own positioning strategy and accuracy.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The positioning information sharing system serves multiple functions: it improves positioning accuracy, enables performance comparison among vehicles, identifies optimal satellites for positioning, and adapts to different environmental conditions. This multi-functionality resolves the contradiction by making the complex system universally beneficial.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If vehicles share detailed positioning information including satellite data and ephemeris, then overall system positioning performance improves, but the quantity of data transmitted and processed increases

Engineering Contradiction:

Improvesystem positioning performanceVSAvoiddata quantity

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The system extracts and shares only the most critical positioning information elements such as satellite identification, ephemeris data, and positioning accuracy metrics. By selecting and extracting only the essential data needed for improvement, the system maintains high reliability while managing data quantity efficiently.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The system dynamically adjusts the level of detail in shared information based on conditions. It changes parameters such as the precision of ephemeris data, the frequency of updates, and the selection of which satellites to report, thereby optimizing the balance between system performance and data quantity.

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If vehicles with poor positioning performance receive support information from vehicles with good performance, then positioning accuracy of underperforming vehicles improves, but the system requires continuous monitoring and analysis of surrounding vehicles

Engineering Contradiction:

Improvepositioning accuracy of underperforming vehiclesVSAvoidcontinuous monitoring requirement

Core Design Contradiction:

Measurement precisionVSExtent of automation

Solution Approach 1:

Vehicles autonomously monitor their own positioning performance and automatically request or receive support information when needed. The system enables self-service by allowing vehicles to independently identify when they are underperforming and to obtain corrective information from surrounding vehicles without requiring constant external monitoring or control.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS20250076515A1Vehicle positioning system and storage medium storing vehicle information provision program

Publication Date: 2025.03.06 DENSO CORP

AI summary

A vehicle positioning system includes a first-vehicle information receiving unit, a surrounding information analysis unit, a positioning unit, a positioning accuracy determination unit, a second-vehicle information generation unit, and a second-vehicle information transmitting unit. The first-vehicle information receiving unit receives first-vehicle information from a first vehicle around a second vehicle. The surrounding information analysis unit analyzes the first-vehicle information to acquire a first positioning performance. The positioning unit performs positioning of the second vehicle based on satellite information and the first positioning performance. The positioning accuracy determination unit determines accuracy of the positioning of the second vehicle. The second-vehicle information generation unit generates second-vehicle information including at least one of information indicating which satellite is used or not used for the positioning, ephemeris information, or pseudorange correction information. The second-vehicle information transmitting unit transmits the second-vehicle information to the first vehicle.