Multi-UWB Antenna Positioning for Indoor-Outdoor Target Detection
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Solution Overview
Problem
UWB communication systems face challenges in accurately measuring position information due to variations in antenna performance and signal loss caused by vehicle metal parts and human bodies, leading to positioning errors and deviations.
Innovation Solution
A position-measuring device using multiple UWB antennas, where a signal processing module combines and switches signals from these antennas to improve signal gain and accuracy, allowing for differentiation between indoor and outdoor measurement targets based on received UWB signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single UWB antenna is used for position measurement, then the device complexity is low, but positioning accuracy deteriorates due to signal loss and multipath fading from vehicle metal parts and human bodies
Solution Approach 1:
The patent divides the antenna system into multiple separate UWB antennas (first UWB antenna, second UWB antenna, third UWB antenna) positioned at different locations and orientations. Each antenna segment captures signals from different spatial perspectives, reducing the impact of signal blockage and multipath fading from vehicle metal parts and human bodies, thereby improving positioning accuracy without requiring a single complex antenna
2Measurement precision
If multiple UWB antennas are used to improve positioning accuracy, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent combines signals from multiple UWB antennas through a signal processing module that performs signal combining and switching operations. The module integrates the first UWB signal from the first antenna with second and third UWB signals from the second and third antennas, merging multiple signal sources into a unified position measurement output, thereby improving accuracy while managing processing complexity through systematic signal integration
3Measurement precision
If signal processing module combines signals from multiple antennas, then positioning accuracy improves, but device complexity increases
Solution Approach 1:
The signal processing module implements dynamic signal switching and combining capabilities, allowing it to adaptively select and process signals from different antenna combinations based on real-time signal conditions. The module can dynamically switch between using the first UWB antenna alone or combining it with the second and third antennas, providing flexible signal processing that improves accuracy while managing complexity through adaptive operation
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
The device effectively distinguishes between indoor and outdoor measurement targets and enhances positioning accuracy by combining signals from multiple UWB antennas, improving upon conventional UWB positioning technologies.
Implementation Method 1
a first UWB antenna configured to transmit or receive a UWB tag positioned on a measurement target and a UWB signal
Data Source
AI summary
Presented is a position-measuring device using UWB antenna, the position-measuring device distinguishing measurement targets positioned indoors from measurement targets positioned outdoors on the basis of UWB signals received from a plurality of UWB antennas. The presented position-measuring device includes: a first UWB antenna; a second UWB antenna; a third UWB antenna; a signal processing module which outputs a signal received from the first UWB antenna and a UWB signal received from at least one among the second UWB antenna and the third UWB antenna; and a position-measuring module which measures the position of the measurement target on the basis of the UWB signals output from the signal processing module.