Radar Field-of-View Adjustment for Tracking Moving Attendees
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Solution Overview
Problem
Radar systems with fixed pointing areas lose detection signals and fail to track movable attendees when they move out of the field of view, limiting their effectiveness in detecting physiological information.
Innovation Solution
A radar detection system with a radar unit, pointing control unit, and processing unit that adjusts the field of view direction based on feedback signals to maintain tracking, using frequency modulated continuous wave signals and algorithms for cluster analysis and displacement determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a radar with fixed pointing area is used, then the radar can maintain stable detection within its field of view, but it cannot track movable attendees who move outside the field of view
Solution Approach 1:
The radar system dynamically adjusts its field of view direction based on the movement of detected targets. The processing unit determines displacement of tracked clusters and generates control signals to adjust the FOV direction, making the radar adaptable to movable attendees while maintaining reliable tracking
Solution Approach 2:
The system uses feedback from the displacement determination of tracked clusters to control the FOV direction adjustment. The processing unit continuously monitors target position and provides feedback control signals to the pointing control unit, enabling the radar to follow movable attendees while maintaining stable detection
2Adaptability or versatility
If the radar FOV direction is dynamically adjusted to track movable attendees, then the tracking capability is improved, but the system complexity increases due to additional control mechanisms
Solution Approach 1:
The processing unit performs multiple functions: it processes radar signals, determines cluster positions, calculates displacement, determines tracking status, and generates control signals. This multi-functionality reduces the need for separate dedicated components, managing system complexity while enabling dynamic FOV adjustment for improved tracking
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
Enables continuous detection and tracking of movable attendees by dynamically adjusting the field of view, expanding the detectable range and maintaining radar contact even when attendees move outside the initial field of view.
Implementation Method 1
The radar unit is configured to generate a radio frequency signal. The radar unit radiates the radio frequency signal, receives a feedback signal
Implementation Method 2
a radar having a fixed pointing area may be used. However, for movable attendees, the radar loses a detection signal
Data Source
AI summary
A radar detection system and a radar field of view (FOV) direction adjustment method are provided. A processing unit of the radar detection system performs the following steps in one scanning round: obtaining at least one cluster of a current frame and a current status and a next status of each cluster based on digital feedback signals; and determining a displacement, determining, based on the current status of a tracked cluster in the at least one cluster and the displacement, whether the tracked cluster is located on an edge of a current FOV of a radar unit, and sending a control signal based on the next status of the tracked cluster in response to the tracked cluster being located on the edge of the current FOV, to adjust an FOV direction of the radar unit.