UWB Angle Estimation via Shortest Path Signal Verification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing technologies for estimating the angle of incidence of wireless signals, such as those using UWB, face accuracy issues when obstacles are present between the transmitter and receiver, leading to reduced positioning accuracy.
Innovation Solution
A communication device with multiple wireless communication sections that detect specific elements in chronological information from pulse signals, verify if these elements come through the shortest path, and estimate the angle of incidence using reference axes set by the wireless communication sections, improving positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If wireless signal angle estimation is performed using conventional methods, then positioning can be achieved, but accuracy deteriorates when obstacles are present between transmitter and receiver
Solution Approach 1:
The patent segments the received signal into multiple chronological information elements, each representing different propagation paths. By dividing the signal analysis into discrete temporal segments, the system can identify and select the shortest path signal while filtering out reflected or obstructed signals, thereby maintaining accuracy in obstructed environments
Solution Approach 2:
The patent performs preliminary verification to determine whether received signals are based on the shortest path before using them for angle estimation. This preliminary action of verifying signal validity ensures that only reliable shortest path signals are used, preventing obstruction-induced errors from degrading estimation accuracy
2Loss of information
If multiple wireless communication sections are used to receive pulse signals, then more chronological information is available, but the complexity of detecting and verifying specific elements increases
Solution Approach 1:
The patent merges the chronological information from multiple wireless communication sections by detecting specific elements across all received pulse signals. This combining approach allows the system to leverage data from all antenna elements while using a unified verification process to identify shortest path signals, achieving information consolidation without proportionally increasing processing complexity
Solution Approach 2:
The patent applies partial verification by checking whether specific elements in chronological information are based on shortest path signals. Rather than performing exhaustive analysis on all signal components, the system focuses verification efforts on identifying the shortest path, achieving sufficient accuracy without the full complexity of complete signal characterization
Data Source
AI summary
A communication device includes: a plurality of wireless communication sections, each of which is configured to wirelessly receive a signal from another communication device; and a control section configured to detect a specific element in chronological information based on respective pulse signals received by the plurality of wireless communication sections, on the basis of respective pieces of chronological information including, as elements related to time, information that chronologically changes and that is obtained when the plurality of wireless communication sections receive the respective pulse signals transmitted from the other communication device, verify whether each of a plurality of the detected specific elements is based on the pulse signal coming through a shortest path, and estimate an angle from which the pulse signal has come while using axes extending from reference point, on the basis of the plurality of specific elements that are verified as elements based on the pulse signals.