Position Correction Apparatus Using Reference Range Feedback
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Solution Overview
Problem
Existing position estimation technologies, such as GPS and wireless LAN, often face challenges in ensuring reliable positioning accuracy, particularly in indoor environments or areas with high-rise facilities, leading to unstable location plots that deviate from actual movement routes.
Innovation Solution
A position correction apparatus and method that associate a reference position with a terminal, determine a range based on this position, and correct a second position to a corrected position if it falls outside this range, using techniques like triangulation, action labels, and route information to enhance positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If position estimation is performed using GPS or wireless LAN signal intensity, then positioning can be obtained in various environments, but positioning accuracy is not ensured all the time leading to unreliable estimation results
Solution Approach 1:
The system uses feedback by comparing the estimated position with the predetermined range (fence) to detect deviations. When the estimated position falls outside the valid range, the system feeds back this information to trigger correction, creating a closed-loop control system that continuously monitors and adjusts position estimates to maintain reliability and accuracy
Solution Approach 2:
The system performs preliminary action by pre-establishing valid position ranges (fences) before position estimation occurs. These predetermined ranges serve as reference boundaries that guide the correction process, allowing the system to proactively prevent unreliable position estimates rather than reacting after errors occur
2Measurement precision
If position correction is performed by selecting nearest position within range, then positioning accuracy is improved, but additional processing complexity is introduced
Solution Approach 1:
The system extracts only the essential correction operation needed - finding the nearest position within the predetermined range. By isolating this specific corrective action from complex recalibration processes, the system achieves improved positioning accuracy with minimal additional processing complexity, implementing simplicity through selective extraction of the necessary correction function
Data Source
AI summary
Systems and methods for correcting a location of a terminal are provided. In various aspects, a processor in a position correction apparatus may associate a reference position with the terminal, and determine a range for the terminal based on the reference position. The processor may also associate a second position with the terminal, and determine if the second position associated with the terminal is outside the determined range for the terminal based on the reference position. Upon a determination that indicates that the second position is outside the determined range, the processor may correct the second position to a corrected position associated with the terminal.