Radar Target Detection Skipping Stationary Objects
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Solution Overview
Problem
Existing radar technologies face challenges in reducing the processing load for detecting targets, particularly in distinguishing between stationary and moving objects, which can lead to increased computational requirements and false alarms.
Innovation Solution
An electronic device equipped with a transmission antenna and a reception antenna, utilizing a constant false alarm rate (CFAR) method to detect targets by skipping processing of stationary objects, thereby reducing the processing load and minimizing false alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If constant false alarm rate processing is applied to all detected objects, then detection accuracy is improved, but processing load increases
Solution Approach 1:
The patent segments the detection process into two distinct stages: a first detection process that identifies all objects including stationary ones, and a second detection process that applies CFAR processing only to non-stationary objects. This segmentation allows the system to maintain high detection accuracy for moving objects while reducing overall processing load by excluding stationary objects from the computationally intensive CFAR processing.
Solution Approach 2:
The patent applies CFAR processing partially rather than universally - specifically, it applies the processing only to objects determined to be non-stationary (moving objects) while skipping stationary objects. This partial application of the detection method maintains accuracy where needed while avoiding unnecessary processing of objects that would not trigger false alarms, thereby reducing overall processing load.
2Reliability
If all objects are processed for target detection, then detection completeness is improved, but processing time increases
Solution Approach 1:
The patent performs a preliminary detection process first to identify all objects in the detection range, including stationary objects. Based on the results of this first detection, the system then determines which objects require further CFAR processing. This preliminary action allows the system to filter out stationary objects before applying the time-consuming CFAR processing, thereby reducing total processing time while maintaining detection completeness for relevant targets.
Solution Approach 2:
The detection process is divided into two sequential segments: a first detection process that quickly identifies all objects, and a second CFAR-based detection process that processes only non-stationary objects. This time-segmented approach ensures that all objects are considered for detection completeness while minimizing processing time by applying intensive processing only where necessary.
3Reliability
If stationary objects are included in target detection, then false alarm reduction is improved, but processing efficiency decreases
Solution Approach 1:
The patent extracts and separates stationary objects from the set of objects requiring CFAR processing. By identifying stationary objects in the first detection process and excluding them from the second CFAR-based detection process, the system eliminates unnecessary processing of objects that cannot produce false alarms (since they are stationary), thereby improving processing efficiency while maintaining false alarm reduction for moving objects.
Solution Approach 2:
The patent applies CFAR processing selectively only to non-stationary objects rather than to all detected objects. Since stationary objects cannot generate false alarms (they remain stationary), applying CFAR processing to them would be excessive and wasteful. By limiting CFAR processing to only those objects that can potentially cause false alarms (moving objects), the system improves processing efficiency without compromising false alarm reduction.
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 proposed solution effectively reduces the processing load for detecting moving objects while avoiding unnecessary processing of stationary objects, thereby enhancing the efficiency and accuracy of target detection in radar systems.
Implementation Method 1
a transmission antenna 25 that transmits a transmission wave T
Implementation Method 2
a reception antenna 31 that receives a reflected wave R that is the transmission wave T having been reflected
Data Source
AI summary
An electronic device includes a transmission antenna that transmits a transmission wave, a reception antenna that receives a reflected wave that is the transmission wave having been reflected, and a control unit that detects a target by using a constant false alarm rate on the basis of a transmission signal transmitted as the transmission wave and a reception signal received as the reflected wave. The control unit performs control to skip processing of detecting an object determined to be a stationary object among objects located around the electronic device, as the target by using the constant false alarm rate on the basis of the transmission signal and the reception signal.