Dynamic Ionospheric Correction Data Augmentation
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Solution Overview
Problem
Current satellite-based positioning techniques face inaccuracies due to atmospheric delays, particularly in the ionosphere, which are not adequately addressed by existing static ionospheric correction models that do not account for dynamic changes in ionospheric activity and solar influence, leading to inefficient data transmission and computational resource usage.
Innovation Solution
A method and apparatus that dynamically adjust the size and transmission rate of atmospheric correction data by using a dynamic correction data update rate based on ionospheric activity models, solar activity, and location-specific data, and applying polynomial models to optimize correction message size and frequency, allowing for more efficient data transmission and reduced computational resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If static ionospheric correction models are used, then device complexity is reduced, but measurement precision deteriorates due to inadequate accounting for dynamic ionospheric changes
Solution Approach 1:
The patent transitions from static ionospheric correction models to dynamic models that continuously adapt to changing ionospheric conditions. The system uses real-time solar activity data and location-specific parameters to update correction values, ensuring positioning accuracy reflects current atmospheric states rather than relying on predetermined static corrections.
Solution Approach 2:
The patent modifies correction parameters dynamically based on solar activity levels and geographic location. By changing the parameters of the correction model in response to measured solar flux and position data, the system maintains high positioning precision without requiring overly complex fixed structures, achieving adaptability through parameter variation rather than structural complexity.
2Measurement precision
If high-rate correction data transmission is used, then measurement precision is improved through more frequent updates, but loss of energy increases due to continuous data transmission and processing
Solution Approach 1:
The patent implements periodic correction data transmission rather than continuous high-rate transmission. By updating correction data at intervals determined by ionospheric stability and solar activity levels, the system maintains positioning precision when corrections are needed while reducing energy consumption during stable periods, creating an energy-efficient periodic update mechanism.
Solution Approach 2:
The system uses feedback from solar activity monitoring and position data to dynamically adjust the correction data transmission rate. When solar activity increases or position uncertainty grows, the feedback mechanism triggers more frequent corrections; when conditions are stable, transmission rate decreases, optimizing the balance between precision and energy consumption through condition-based feedback control.
3Measurement precision
If comprehensive error correction is applied, then measurement precision is improved, but device complexity increases due to multiple correction layers
Solution Approach 1:
The patent extracts and addresses the most significant error sources (ionospheric delay, satellite clock errors, ephemeris errors) separately through dedicated correction mechanisms rather than attempting to correct all errors simultaneously. By focusing on the dominant error components and applying targeted corrections, the system achieves high precision without the complexity of comprehensive multi-layer correction for all possible error types.
Data Source
AI summary
A method, apparatus and computer program product are configured to dynamically augment ionospheric correction data. A method receives, from a requesting device, a request for grid layout data, where the grid layout data is associated with one or more geographical areas experiencing atmospheric delay incurred with a satellite-based positioning technique. The method transmits, in response to the request for the grid layout data, a grid layout definition message comprising a grid layout definition associated with the grid layout data associated with the one or more geographical areas. The method generates correction data based in part on the grid layout data, where the correction data is configured to correct the atmospheric delay incurred with the satellite-based positioning technique. The method also generates correction messages comprising at least a portion of the correction data and transmits the correction messages to the requesting device based on a dynamic correction data update rate.