Radar Target Tracking Excluding High Echo Zones
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Solution Overview
Problem
Existing radar systems face challenges in suppressing false tracking of targets, particularly in areas where the level of reflected waves is high, such as land regions.
Innovation Solution
A target tracking apparatus and method that sets a tracking restriction area based on echo data, excluding positions with reflected wave levels equal to or greater than a threshold, thereby preventing false tracking by excluding potential target coordinates within this area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tracking processing is performed based on all echo data, then the tracking coverage is comprehensive, but false tracking occurs in areas with high reflected wave levels such as land regions
Solution Approach 1:
The detection area is divided into a tracking permission area and a tracking restriction area based on reflected wave levels. The area with high reflected wave levels (equal to or greater than threshold Th2) is segmented as a tracking restriction area where tracking processing is excluded, while other areas form the tracking permission area where normal tracking is performed. This segmentation resolves the contradiction by spatially separating reliable tracking zones from problematic zones.
Solution Approach 2:
Different tracking policies are applied to different spatial regions: in the tracking permission area, full tracking processing is performed, while in the tracking restriction area, tracking processing is excluded. This local differentiation allows the system to maintain high tracking accuracy in reliable areas while avoiding false tracking in areas with high reflected wave levels.
2Quantity of substance
If tracking is performed in areas with high reflected wave levels, then more potential targets can be detected, but false detection increases due to land and other non-target reflections
Solution Approach 1:
Before performing tracking processing, the system preliminarily identifies areas with high reflected wave levels (equal to or greater than threshold Th2) and designates them as tracking restriction areas. By pre-excluding these areas from tracking processing, the system prevents false detections from land and other non-target reflections before they can contaminate the target detection results.
3Reliability
If a simple threshold-based restriction area is used, then false tracking is suppressed, but the complexity of setting and managing restriction areas increases
Solution Approach 1:
The system uses reflected wave level parameters from echo data to automatically determine tracking restriction areas. By changing the parameter threshold (Th2) that defines the restriction area boundary, the system can adapt to different environments and operational requirements without complex manual configuration, thus suppressing false tracking while maintaining manageable system complexity.
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 of targets by excluding areas with high reflected wave levels from the tracking process, thereby improving the accuracy and reliability of target tracking in radar systems.
Implementation Method 1
echo data indicating a correspondence relationship between a position in the detection target area and a level of reflected waves reflected by electromagnetic waves transmitted through an antenna
Data Source
AI summary
The disclosure discloses a target tracking apparatus for tracking a target on the water, and is provided with an echo data acquiring interface which acquires echo data indicating a correspondence relationship between a position in the detection target area and a level of reflected waves reflected by electromagnetic waves transmitted through an antenna at the position. A tracking processor configured to track a target based on the echo data. A tracking restriction area setting unit configured to set a tracking restriction area that specifies a region where the level of the reflected wave is equal to or greater than a threshold level based on the echo data. Thereafter, the tracking processor tracks the target based on the echo data in the area outside the tracking restriction area.