UWB Target Detection Using Ranging Validation to Cut False Alarms
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Solution Overview
Problem
UWB radar systems often produce false positive target detections due to similar radar echoes from different target movements, reducing user experience and convenience.
Innovation Solution
A method involving UWB radar and ranging operations, where a first detection output from radar data is validated by a second detection output from ranging data, using a single or dual device configuration, to reduce false alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UWB radar operations are performed to detect target movements, then detection capability is improved, but false positive detections increase
Solution Approach 1:
The patent introduces UWB ranging operations as an intermediary validation mechanism. The ranging data acts as a mediator that confirms or rejects radar-detected target movements. This intermediary step filters out false positives by verifying whether the detected movement corresponds to actual changes in distance to UWB-enabled devices, thereby maintaining high detection capability while improving reliability.
2Ease of operation
If radar-based target movement detection is used, then user convenience is improved, but false alarms reduce user experience
Solution Approach 1:
The patent implements a feedback mechanism where ranging data continuously validates radar detection results. When radar detects a target movement, the system receives feedback from ranging operations to confirm whether the movement is genuine. This feedback loop maintains user convenience by enabling contactless interactions while reducing false alarms through verification, thereby improving overall system reliability.
3Measurement precision
If multiple detection methods are combined to reduce false positives, then detection accuracy is improved, but device complexity increases
Solution Approach 1:
The patent leverages the multi-functionality of UWB technology by using the same communication standard for both radar operations (detection) and ranging operations (validation). This universal approach allows a single UWB system to perform multiple functions - detecting target movements and verifying them through distance measurements - thereby improving detection accuracy while minimizing the increase in device complexity through efficient resource utilization.
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
Reduces the likelihood of false positive target detections by using UWB ranging data to confirm or reject radar-based target movements, enhancing detection accuracy and user experience.
Implementation Method 1
performing, by a first detection unit, at least one UWB radar operation
Implementation Method 2
transmitting one or more radar signals to a monitored area and receiving reflections of said radar signals
Implementation Method 3
determining distances between a second detection unit and one or more external UWB-enabled communication devices
Data Source
Figure 1A~1B
Figure 2
Figure 3
AI summary
In accordance with a first aspect of the present disclosure, a method of detecting a target is conceived, comprising: performing, by a first detection unit, at least one ultra-wideband (UWB) radar operation; generating, by the first detection unit, a first detection output based on a result of the UWB radar operation, wherein said first detection output is indicative of a first target movement; performing, by a second detection unit, at least one UWB ranging operation; generating, by the second detection unit, a second detection output based on a result of the UWB ranging operation, wherein said second detection output is indicative of a second target movement; accepting or rejecting, by a processing unit, the first detection output based on the second detection output. In accordance with further aspects of the present disclosure, a corresponding computer program and a corresponding target detection system are provided.