Moving AoA Locator Self-Calibration for Beacon Positioning
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Solution Overview
Problem
Existing AoA positioning systems for movable devices require complex infrastructure and calibration processes, making it difficult for end users to accurately position beacons and determine the device's location within a working area.
Innovation Solution
A system and method where a movable device with an antenna array determines the angle of arrival of beacon signals at multiple positions, allowing it to calculate its own position and the positions of beacons, using motion sensors and reverse AoA modes to simplify the calibration process and eliminate the need for complex infrastructure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a complex infrastructure with gateways, backhaul networks, and calibration tools is used for AoA positioning, then positioning accuracy is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent extracts the calibration functionality from the complex infrastructure and integrates it directly into the movable device itself. The device performs self-calibration by autonomously determining beacon positions through multiple measurements at different locations, eliminating the need for external calibration tools and reducing system complexity while maintaining positioning accuracy
Solution Approach 2:
The movable device performs self-calibration by autonomously determining its own position and the positions of beacons through multiple AoA measurements. The device independently executes the calibration process without requiring external calibration tools or complex infrastructure, thereby simplifying the system while maintaining positioning accuracy
2Measurement precision
If exact beacon positioning with complex infrastructure is implemented, then positioning accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The system performs automated self-calibration where the movable device independently determines beacon positions through multiple AoA measurements at different locations. This eliminates the need for users to manually position beacons or input complex calibration data, significantly improving ease of operation while maintaining positioning accuracy
Solution Approach 2:
The device performs preliminary calibration measurements autonomously by moving to different positions and collecting AoA data before actual operation begins. This preliminary self-calibration process establishes accurate beacon positions without requiring user intervention, making the system easy to operate
3Measurement precision
If multiple AoA measurements at different positions are performed for self-calibration, then positioning accuracy is improved, but time consumption increases
Solution Approach 1:
The device performs AoA measurements at multiple discrete positions systematically, with each position providing additional information for triangulation. This periodic measurement approach at optimized locations achieves accurate position determination efficiently, balancing measurement precision with time consumption
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the movable device to autonomously determine its location and the positions of beacons within a working area with minimal user input, reducing complexity and error, and allowing efficient operation within the defined area.
Implementation Method 1
These algorithms exploit the difference in phase of the incoming signal at a plurality of antenna elements
Data Source
AI summary
A system and method for determining a position or a movable device is disclosed. The present system utilizes a movable device equipped with a locator device that has an antenna array such that it may determine the angle of arrival of a plurality of incoming beacon signals. In certain embodiments, the movable device is also able to measure its distance travelled. By knowing its distance moved and the angle of arrival from each beacon, the locator device is able to calculate its position as well as the position of each beacon. This procedure may be executed at regular intervals so that the movable device accurately determines its position.