Radar Object Detection Using Dual Polarization Background Subtraction
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Solution Overview
Problem
Existing object detection methods using radar systems face challenges in accurately distinguishing objects from background signals, particularly in scenarios where objects are close to surfaces or embedded within components, leading to reduced detection accuracy and susceptibility to errors.
Innovation Solution
A method utilizing dual-channel radar analysis with defined threshold comparisons and background signal subtraction, employing copolarization and circularly polarized channels, allows for robust object detection by filtering out background signals and enhancing detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If copolarization channel is used for object detection, then detection effectiveness for thicker or extended objects is improved, but background signal strength increases making object signals masked
Solution Approach 1:
The patent segments the radar detection into multiple channels (copolarization channel for extended objects, circularly polarized channel for surface objects) and processes each channel separately with appropriate background signal removal techniques tailored to each channel's characteristics
Solution Approach 2:
The patent extracts and removes background signals from the radar data through median calculation and subtraction, separating the background signal component from the object signal component to enable accurate object detection
2Measurement precision
If background signal removal procedure is implemented, then object detection accuracy is improved, but device complexity and operational steps increase
Solution Approach 1:
The system performs background signal removal automatically using the radar data itself - recording signals at different positions and calculating median values from the data to generate background signals that are then subtracted, eliminating the need for external background signal sources
3Ease of operation
If Spot View mode is used with immediate result requirement, then ease of operation is improved, but detection performance for extended objects deteriorates
Solution Approach 1:
The patent implements a multi-functional radar system that can operate in both Spot View mode (using circularly polarized channel for immediate results) and extended object detection mode (using copolarization channel with background removal), allowing the same device to serve multiple detection purposes
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 accurate and reliable object detection in various scenarios, including objects near surfaces or embedded within components, by improving signal-to-noise ratio and reducing error susceptibility.
Implementation Method 1
a radar system (3) of the locating device (2), wherein the radar system (3) is arranged in a region of the component (1) and emits a radar signal in the direction of the component (1) for the purpose of acquiring the radar data
Implementation Method 2
Another channel is, for example, the copolarization channel. This channel emits or virtually emits a linearly polarized wave and receives it in the same polarization direction
Implementation Method 3
there can be a circularly polarized channel that actually or virtually (mathematically calculated) emits a circularly polarized wave
Data Source
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AI summary
The invention relates to a method for performing object detection in a component using a locator. The invention further relates to a computer program, a device, a storage medium, and a locator for this purpose.