GNSS Position Probability Distribution Correction via Mobile Data Exchange
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Solution Overview
Problem
Current GNSS systems, such as GPS, offer limited accuracy for precise position determination, and existing methods like DGPS require additional hardware and incur costs, limiting their widespread adoption for applications like aerospace and autonomous vehicles.
Innovation Solution
A method that enables improved GNSS-based localization by exchanging position probability distributions and sensor data between mobile systems via communication connections, using existing sensors and GNSS receivers to determine and share correction terms, eliminating the need for additional hardware like DGPS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If DGPS is used to improve position determination accuracy, then positioning accuracy is improved, but additional hardware and costs are required
Solution Approach 1:
The patent uses virtual copies of reference station correction data through simulation models. Instead of requiring physical DGPS hardware at each location, the system creates virtual reference stations by simulating GNSS signal behavior and correction terms based on stored geographic and temporal data, allowing accuracy improvement without additional physical infrastructure
Solution Approach 2:
The patent replaces the mechanical hardware-based DGPS system with an information-based system. Rather than using physical reference stations and direct signal transmission, the system uses stored geographic data, simulation models, and communication networks to generate and distribute correction terms, substituting physical infrastructure with digital information processing
2Measurement precision
If DGPS services are used to improve position determination accuracy, then positioning accuracy is improved, but costs increase due to fees and specialized receivers
Solution Approach 1:
The patent makes the correction system universally accessible through existing infrastructure. The simulation-based reference station can serve multiple users simultaneously through communication networks, and the system can provide correction data for different locations and times using the same hardware platform, eliminating the need for expensive specialized DGPS receivers at each user location
Solution Approach 2:
The patent uses computationally inexpensive simulation models that can be rapidly executed on standard devices. Rather than requiring expensive, specialized DGPS hardware, the system uses readily available computing resources to generate correction terms, making the solution economically accessible to widespread users
3Measurement precision
If offset GNSS receivers are used to improve position determination accuracy, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The patent extracts the reference station functionality from physical hardware and relocates it to a simulation-based information system. Instead of requiring multiple physical receivers to be installed at offset locations, the system extracts the essential correction data and delivers it through communication networks to any location, eliminating the need for complex hardware configurations
Data Source
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Figure 3
AI summary
The invention relates to a method for correcting a positional probability distribution, wherein at least two mobile systems determine a respective positional probability distribution using a respective GNSS receiver, at least one mobile system determines a distance to at least one second mobile system, the at least two mobile systems exchange the determined positional probability distribution between one another via a communications connection, and a correction term for the improvement of the positional probability distributions is calculated using the at least two determined positional probability distributions and the distance between the at least two mobile systems. The invention also relates to a method for providing at least one correction term.