RF Antenna Layout for Precise Relative Position Tracking
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Solution Overview
Problem
Current position tracking systems, particularly in Virtual Reality (VR) and Augmented Reality (AR) environments, face challenges with accuracy, especially indoors, and require high precision and low power consumption to effectively track multiple objects in real-time, while existing systems are limited by GPS inaccuracy, energy consumption, and the need for recalibration when objects change.
Innovation Solution
A system utilizing at least three spatially separated receiver antennae to acquire RF signals from multiple RF-transmitting antennae, coupled with a processor to determine relative positions and control vehicle operations, enabling precise tracking of objects and devices using multifrequency RF signals and phase difference of arrival (PDOA) techniques, allowing for accurate 2D and 3D position determination without camera gesture tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If GPS is used for position tracking, then coverage area is large, but tracking precision deteriorates to meters level which is insufficient for VR/AR applications requiring five inches or less accuracy
Solution Approach 1:
The system segments the tracking function into multiple components: GPS provides coarse position information while multiple RF transmitters at known locations provide fine-grained position data. The receiver combines these segmented sources to achieve both wide coverage and high precision, resolving the contradiction between GPS coverage and precision.
2Measurement precision
If multiple RF-transmitting antennae are used for precise tracking, then tracking precision improves to five inches or less, but device complexity increases
Solution Approach 1:
The system employs self-service through autonomous operation of multiple RF transmitters that continuously broadcast their known locations. The receiver autonomously processes signals from these transmitters to calculate precise position without requiring manual calibration or complex external intervention, achieving high precision while managing complexity through automated processes.
3Use of energy by moving object
If traditional tracking systems are used, then power consumption is moderate, but recalibration is required when objects change, causing loss of time
Solution Approach 1:
The system implements dynamic adaptability by continuously receiving and processing RF signals from multiple transmitters in real-time. When objects or environmental conditions change, the system dynamically adjusts its position calculations without requiring manual recalibration, maintaining both low power consumption and eliminating recalibration time loss through adaptive algorithms.
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 solution provides high accuracy and low power consumption for real-time tracking of multiple objects, improving user experience in VR and AR environments by enabling precise interaction and reducing the need for recalibration, while extending tracking beyond traditional GPS limitations.
Implementation Method 1
A system utilizing at least three spatially separated receiver antennae to acquire RF signals from multiple RF-transmitting antennae, coupled with a processor to determine relative positions and control vehicle operations, enabling precise tracking of objects and devices using multifrequency RF signals and phase difference of arrival (PDOA) techniques
Data Source
AI summary
Vehicles and methods of navigating vehicles comprise at least three receiver antennae configured to receive radio frequency (RF) signals from one or more RF-transmitting antennae coupled to an object, receiver circuitry coupled to the receiver antennae to acquire the RF signals and to determine timing information from the acquired RF signals, memory storing information related to fixed distances between each receiver antenna and each other receiver antenna, a processor configured to determine a relative position of the vehicle with respect to the one or more RF-transmitting antennae based on the stored information related to the fixed distances between each receiver antenna and each other receiver antenna and on the timing information determined by the receiver circuitry, and a control system configured to control operation of the vehicle in response to the relative position of the vehicle with respect to the one or more RF-transmitting antennae determined by the processor.