GNSS Correction Tagging for Bandwidth Reduction
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Solution Overview
Problem
Current satellite positioning systems face inefficiencies in transmitting and utilizing Global Navigation Satellite System (GNSS) corrections, leading to increased bandwidth usage and reduced accuracy due to the transmission of irrelevant or outdated corrections, as well as issues with asynchronous correction updates and receiver connectivity.
Innovation Solution
A system and method that generate and transmit relevant GNSS corrections based on the receiver's locality, using a computing system with a correction generator, storage module, and distribution module to cache and disseminate only updated corrections, tagged for identification and versioning, ensuring accurate and timely positioning data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all GNSS corrections are transmitted to ensure complete coverage, then positioning accuracy is maintained, but bandwidth usage increases and transmission efficiency decreases
Solution Approach 1:
The patent applies local quality by transmitting corrections selectively based on receiver locality. The system determines which receivers need which corrections based on their geographic location and transmission conditions, rather than broadcasting all corrections to all receivers. This localized approach ensures positioning accuracy is maintained for each receiver while reducing overall bandwidth consumption.
Solution Approach 2:
The patent segments the correction transmission process into multiple components: determining receiver locality, identifying applicable corrections, and transmitting only relevant corrections. This segmentation allows the system to handle different receivers with different correction sets, improving bandwidth efficiency while maintaining accuracy for each segment.
2Measurement precision
If corrections are transmitted frequently to ensure up-to-date positioning data, then positioning accuracy improves, but transmission time and bandwidth consumption increase
Solution Approach 1:
The patent implements periodic action by transmitting corrections at optimized intervals rather than continuously. The system determines when corrections are actually needed based on changes in receiver locality or correction data, transmitting only when necessary. This periodic transmission maintains positioning accuracy while minimizing unnecessary transmission time and bandwidth usage.
3Reliability
If comprehensive correction sets are transmitted to all receivers, then all receivers can achieve optimal positioning, but asynchronous updates and connectivity issues cause data inconsistencies
Solution Approach 1:
The patent applies feedback by having receivers report their locality and connectivity status, allowing the transmission system to adapt correction delivery. This feedback mechanism ensures that each receiver receives appropriate corrections for its current state, maintaining positioning integrity while simplifying synchronization by tailoring transmissions to individual receiver needs rather than managing complex universal updates.
Data Source
AI summary
A system or method for generating or distributing GNSS corrections can include or operate to: generate a set of corrections based on satellite observations, wherein each correction of the set of corrections comprises an area associated with the correction, a tag, and correction data; update a set of stored corrections with the set of received corrections based on a tag associated with each correction of the set of stored corrections and the tag associated with each correction of the set of received corrections; and transmit stored corrections of the set of stored corrections to the GNSS receiver when the area associated with the stored corrections matches the locality of the GNSS receiver.