Target Tracking Apparatus Using Fluctuation Value Filtering
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Solution Overview
Problem
Existing radar systems face challenges in suppressing false tracking of targets, particularly in environments with high clutter levels.
Innovation Solution
A target tracking apparatus and method that utilize echo data to calculate fluctuation values for potential targets, allowing the system to select and track targets with fluctuation values below a predetermined threshold while removing targets with fluctuation values equal to or greater than the threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional radar tracking methods are used, then target detection capability is maintained, but false tracking of targets in cluttered environments occurs
Solution Approach 1:
The patent introduces a fluctuation value as a new parameter to characterize target behavior over time. By calculating the fluctuation value based on the change in velocity vectors between successive echo data, the system can distinguish between stable targets and false detections. The tracking processor uses this parameter to filter out false tracking by removing potential targets whose fluctuation values exceed a predetermined threshold, thereby improving tracking reliability in cluttered environments.
Solution Approach 2:
The system implements feedback by continuously monitoring the fluctuation values of detected targets and using this information to adjust the tracking decision. The fluctuation value calculator provides feedback about target stability, and the tracking processor uses this feedback to confirm or reject tracking candidates. This closed-loop approach ensures that only stable targets are tracked, preventing false tracking while maintaining detection capability.
2Reliability
If fluctuation value calculation is performed for all potential targets, then false tracking is suppressed, but processing time increases
Solution Approach 1:
The system performs preliminary action by pre-establishing a fluctuation threshold value before processing echo data. This threshold is determined in advance based on the expected characteristics of valid targets versus false detections. By having the threshold ready beforehand, the tracking processor can quickly compare fluctuation values against it without performing complex real-time calculations, thus reducing processing time while maintaining effective false tracking suppression.
Solution Approach 2:
The patent applies partial action by calculating fluctuation values only for potential targets that pass initial detection criteria, rather than processing all detected echoes. The target extracting unit first identifies potential targets based on echo data characteristics, and only then does the fluctuation value calculator compute the fluctuation metric for these candidates. This selective approach reduces the total processing load while maintaining reliable false tracking suppression for actual targets of interest.
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
Effectively suppresses false tracking by distinguishing between actual targets and clutter based on fluctuation values, ensuring accurate target tracking in cluttered environments.
Implementation Method 1
echo data indicating a correspondence relationship between a position in the detection area and the level of the reflected wave at which the electromagnetic wave transmitted through the antenna is reflected at the position
Data Source
AI summary
The disclosure discloses a target tracking apparatus for tracking target on the water of the invention is provided using. An echo data acquiring interface is configured to acquire echo data indicating a correspondence relationship between a position in the detection area and the level of the reflected wave at which the electromagnetic wave transmitted through the antenna is reflected at the position. A target extracting unit is configured to extract a potential target based on the echo data. A fluctuation value calculator is configured to calculate a fluctuation value indicating the fluctuation of the potential target based on the acquired echo data of the potential target at each timing acquired the echo data. The tracking processor is configured to determine a target to be tracked based on the fluctuation value and track the target.