Precision Navigation System Error Correction Message Optimization
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Solution Overview
Problem
Current interoperable train control messaging systems face inefficiencies in data transmission due to large error correction messages, which consume excessive transceiver resources and require significant data transmission, affecting navigation system accuracy and efficiency.
Innovation Solution
A precision navigation system (PNS) with a back office server optimizes error correction messages by determining common satellites between rover and reference station data, normalizing this information, and generating a standardized error correction message, reducing data size and transmission requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If error correction messages are transmitted to ensure navigation accuracy, then navigation system reliability is improved, but transceiver resources are consumed excessively and data transmission requirements increase
Solution Approach 1:
The patent extracts only the essential error correction data from the complete satellite navigation message. By identifying and transmitting only the critical correction information rather than the entire message, the system maintains navigation reliability while significantly reducing transceiver resource consumption and data transmission requirements
Solution Approach 2:
The patent changes the parameter of data size by optimizing the error correction message structure. Through parameter optimization and selective data transmission, the system reduces the message size to minimal necessary bits while preserving the essential correction information needed for accurate navigation
2Measurement precision
If complete error correction data is transmitted to ensure navigation accuracy, then measurement precision is improved, but data transmission size increases excessively
Solution Approach 1:
The patent extracts only the essential error correction data from the complete satellite navigation message. By identifying and transmitting only the critical correction information rather than the entire message, the system maintains navigation reliability while significantly reducing transceiver resource consumption and data transmission requirements
Solution Approach 2:
The patent segments the error correction message into essential and non-essential components. By dividing the data and transmitting only the critical segments, the system reduces overall data transmission size while preserving the measurement precision needed for accurate navigation
3Adaptability or versatility
If standardized error correction messages are generated to improve interoperability, then messaging system adaptability is improved, but message size increases
Solution Approach 1:
The patent creates a universal error correction message format that can be used across different navigation systems and platforms. By designing a standardized structure that serves multiple purposes and compatibility requirements, the system achieves improved interoperability without unnecessarily increasing message size
Data Source
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AI summary
A method (500) for a precision navigation system (PNS) (200), the PNS (200), and a back office (BO) server (235) for optimizing an error correction message for interoperable train control messaging transport (ITCM) are provided. The method includes simultaneously receiving (i) (505) a first message containing error correction data from a reference station (215), and (ii) (510) a second message containing satellite identification information from a rover (205); determining (515) satellites (210) that are common to the error correction data and the satellite identification information; normalizing (520) the data based on the determined satellites; generating (525) an optimized error correction message based on the normalized data of the determined satellites; and transmitting (530) the standardized error correction message to the rover.