Angle-of-Arrival Phase Measurement Across Standard RF Packets
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Solution Overview
Problem
Conventional angle of arrival (AOA) determination methods for wireless signals are limited by the need for a single dedicated section in message packets, which can lead to reduced data transmission time, noise-induced errors, and incompatibility with certain communication protocols, resulting in inaccurate AOA calculations.
Innovation Solution
A system and method for determining AOA using phase measurements from RF signals received by multiple antennas over an arbitrary length of a standard communications packet, allowing for accurate phase comparison without compromising data packets, and capable of operating with various communication protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single dedicated section is used for phase measurement, then AOA determination can be performed, but the data transmission time is reduced and noise-induced errors increase
Solution Approach 1:
The patent segments the message packet into multiple sections, allowing phase measurements to be performed across multiple sections rather than relying on a single dedicated section. This segmentation enables the system to accumulate phase measurements over a longer duration, improving AOA determination accuracy while maintaining adequate data transmission time by utilizing the entire packet structure.
2Productivity
If the single dedicated section is shortened to preserve data transmission time, then data transmission efficiency improves, but measurement precision deteriorates due to increased noise-induced errors
Solution Approach 1:
The patent implements continuous phase measurement across multiple sections of the message packet rather than confining measurements to a single brief dedicated section. This continuous measurement approach maintains high measurement precision by accumulating phase data over an extended period, while the system efficiently utilizes the entire packet structure to ensure adequate data transmission time is preserved.
3Measurement precision
If conventional phase-based AOA systems are used, then AOA determination is possible, but compatibility with devices implementing specific communication protocols is lost
Solution Approach 1:
The patent creates a universal AOA determination system that can operate with various communication protocols by measuring phase across multiple sections of different packet types. The system is designed to extract phase information from arbitrary sections of standardized message packets regardless of the specific protocol being used, making it compatible with diverse devices while maintaining accurate AOA determination capability.
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
Enhances the accuracy of AOA determination by allowing phase measurements over arbitrary periods, improving compatibility with different communication protocols, and reducing noise-induced errors.
Implementation Method 1
AOA can be computed by comparing the phase of RF signals output from two antennas
Implementation Method 2
The RF signals may be representative of an electromagnetic wave received by the at least two antennas
Data Source
AI summary
A system and method for determining an Angle of Arrival (AOA) for frequency modulated communications. The system may include first and second antennas spaced apart from each other by a distance, and configured to receive wireless communications in the form of a modulated signal. The system may determine a phase difference between the received signals based on one or more samples of a dedicated portion of the received signals, where one or more aspects of the dedicated portion is variable.