Antenna Array Angle of Arrival Estimation
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Solution Overview
Problem
Existing methods for determining the angle of arrival of electromagnetic signals in gaming environments are limited, hindering the accurate tracking of user movements and enhancing the gaming experience.
Innovation Solution
A system and method that utilize an antenna array with a snapshot determining module and an angle of arrival processing module to estimate the angle of arrival by generating a snapshot vector based on signals received from each antenna, allowing for more precise tracking of user movements through the calculation of phase delays and angles relative to the antenna array.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to determine user movements, then the system is simple to implement, but the measurement precision of user movement tracking is insufficient
Solution Approach 1:
The system segments the tracking problem into multiple independent measurements by using multiple antennas to receive signals from different directions. Each antenna provides a separate measurement of the electromagnetic signal phase, which when combined through snapshot vector formation and MUSIC algorithm processing, yields precise angular information about user position and movement.
Solution Approach 2:
The system transitions from simple position detection to three-dimensional spatial tracking by measuring the angle of arrival (AOA) of electromagnetic signals. By analyzing phase differences across multiple antennas arranged in space, the system determines not just position but also directional information, adding angular dimensions to the tracking capability.
2Measurement precision
If an antenna array with snapshot vector processing is implemented, then the angle of arrival estimation precision is improved, but the device complexity increases
Solution Approach 1:
The system replaces complex mechanical tracking mechanisms with electromagnetic field-based measurement. Instead of physically moving sensors or actuators to track user position, the system uses stationary antennas to receive electromagnetic signals and determines spatial information through phase analysis and signal processing algorithms.
Solution Approach 2:
The system changes the measurement parameter from simple signal presence to phase difference analysis. By measuring the phase of electromagnetic signals at multiple antennas and calculating phase differences, the system derives angular information. The MUSIC algorithm further processes these phase parameters to produce precise angle of arrival estimates.
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
This approach enables improved tracking of user movements, enhancing the gaming experience by providing a more accurate and immersive interaction with the game environment.
Implementation Method 1
receive a signal from each antenna of an antenna array... Each signal is representative of an electromagnetic signal incident on a respective antenna
Implementation Method 2
generating a snapshot vector including values based on the signals... each value is representative of a phase of a respective signal... estimate an angle of arrival for the electromagnetic signal relative to the antenna array based on the snapshot vector
Data Source
AI summary
Methods and systems for estimating an angle of arrival are provided. In an embodiment, a system for estimating angle of arrival includes a snapshot determining module configured to receive a signal from each antenna of an antenna array and to generate a snapshot vector including values based on the signals and an angle of arrival processing module configured to estimate an angle of arrival for the electromagnetic signal relative to the antenna array based on the snapshot vector. Each signal is representative of an electromagnetic signal incident on a respective antenna of the antenna array and each value is representative of a phase of a respective signal.