Radio Navigation Device Interference Point Data Bank
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Solution Overview
Problem
Conventional radio navigation systems face inaccuracies and failures in areas with interference, such as tunnels and bridges, due to satellite signal loss, leading to increased errors and high costs associated with extensive data banks and expensive map data, which are not proactive in predicting and mitigating these issues.
Innovation Solution
A radio navigation device with a statically stored 'interference point data bank' that provides pre-determined positioning data for predictable regions of signal loss, allowing for early detection of errors and activation/deactivation of alternative sensors to improve accuracy, reducing reliance on faulty satellite data and minimizing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional GPS-supported position determination systems are used, then positioning is available in open areas, but positioning accuracy deteriorates in interference areas such as tunnels and bridges
Solution Approach 1:
The system performs preliminary actions by predicting interference areas using stored geographic data and terrain information before the GPS signal actually fails. This allows the system to proactively switch to alternative positioning methods or alert the user, maintaining positioning accuracy during the transition into and through interference zones rather than reacting after signal loss occurs.
Solution Approach 2:
The invention introduces an intermediary prediction mechanism that acts as a mediator between the GPS receiver and the positioning output. This intermediary layer analyzes geographic data, terrain features, and signal quality to predict upcoming interference areas, enabling the system to prepare alternative positioning strategies and maintain accuracy even when satellite signals are blocked.
2Measurement precision
If extensive data banks and map data are used to improve positioning in interference areas, then positioning accuracy improves, but system costs and complexity increase
Solution Approach 1:
The system extracts only the essential predictive information needed for interference area detection from geographic data, rather than storing and processing complete map data. By focusing on key terrain features and geographic characteristics that indicate potential signal blockage, the system achieves accurate interference prediction with a significantly reduced data footprint.
Solution Approach 2:
The invention changes the parameters of the data storage system by storing predictive interference area information in a condensed format rather than complete geographic maps. This parameter change reduces data bank size and processing requirements while maintaining the ability to accurately predict positioning challenges in interference zones.
3Reliability
If alternative sensor systems are used when satellite signals fail, then positioning continues, but error accumulation increases over time
Solution Approach 1:
The system performs preliminary switching to alternative positioning methods before satellite signal failure occurs by predicting interference areas in advance. This proactive approach allows the system to transition smoothly to complementary positioning techniques, maintaining continuous and accurate positioning without the error accumulation that would result from reactive switching after signal loss.
Data Source
AI summary
In some implementations, the radio navigation device has a data bank or may be associated with the latter, which data bank provides substantially statically stored, pre-determinable positioning data on defined, predictable regions or areas, and the data bank sends error information of the received radio navigation signals to the evaluating apparatus and/or to a user terminal dependently upon pre-defined location information relating to predictable regions or areas of deficient or lacking radio navigation signal reception.